Archive. Review material.
Leaving alone the ethical side of odometer adjustments, odometers have been rolled or screwed up ever since they were invented. Also, we will not consider a mechanical odometer, which even the laziest can wind up and turn our attention to the VAZ electronic odometers with mileage indication on a liquid crystal display.
Currently, three types of dashboards with an electronic odometer are used on VAZ front-wheel drive vehicles: VDO type, Kursk NPO "Schetmash" and a panel of a new sample of the Vladimir plant "Avtopribor", with one narrow display and marking - letters AP in an oval... In a simplified form, the odometer in all these systems is a counter of impulses from the vehicle speed sensor, a divider and an information storage device in the flash memory of the panel. To change the odometer readings, you need to correct the dump stored in the flash. There are several ways here, let's look at each of them.
In a professional car service, it is natural to use an inexpensive full-featured commercial program Combiset from US. It works stably with most VAZ dashboards and pays off in 2-3 times.
If you are interested in non-commercial free options - read below.
Vehicle panelsViburnum
VDO panels specially designed for this car, made on the NEC processor, are installed on Kalina cars. To correct these panels, it is necessary to disassemble them (at least for now) and solder the eeprom to modify the contents using an external programmer.
Currently, these panels began to be installed in the 2110 family (see. Photo) and, in addition to VDO, similar versions of the production of Schetmash and Avtopribor appeared.
The VDO and Schetmash panels can be adjusted "hand-to-hand", there is a simple algorithm for storing the mileage.
AP panel, corrected by the program "Combiset 1 .6" with a special adapter.
VDO Panel (Single and Dual Display)
Panel VDO... The first way is the cheapest, but the most difficult. Disassembly of the panel, cutting tracks, soldering and other tricks is required. Programming goes through the LPT port of the computer. The reading program - records and an example of dump calculation can be downloaded completely free of charge.
Nik sent a small useful utility homemade for those who use this method. For the program to work, a dump read from the EEPROM of the panel is required. Command format: vdo
If the dump is completely lost, download full dump for 2-window VDO, sent by Evgeny Kuznetsov, merged from the panel for 2115. And here you can download dump of the one-cut panel sent by Nail.
The Combiset program displays any mileage on these panels.
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The latest development in the field of researching the data exchange protocol of the VDO panel installed on domestically produced cars is an excellent program VDO Research... Author - Eduard Gorbatko, Krasnodar.
The program, when using a simple adapter (a diagram is attached), allows you to read and write data to the panel (both the entire dump and only mileage data), has a built-in mileage calculator and a rather "advanced" debugger.
The program is freeware. DOWNLOAD
Panel of the Vladimir plant "Avtopribor" (AP) with a one-line display.
Panel, with AP marking in an oval has a somewhat simple look, but very (soon - excessively) serious internals, assembled on 4 PICs, one of which PIC12 CE519 is used in the odometer. This PIC is a one-time programmable microcontroller with 1024 * 12 bits for the control program and 16 bytes of EEPROM, not accessible from the outside, for storing temporary parameters. Presumably there is the mileage data. Ideas on methods of "dealing" with the odometer reading on this panel are welcome. So far, the only one public the way to fight is to wind up with an external generator, since the panel (unlike VDO, which stops after 360 km / h) allows you to set a high speed. The maximum possible speed is about 8500 km / h. Uncle Sam has developed a technique for dealing with this panel. It will be necessary to assemble a simple circuit to connect to the panel. Official users COMBISET will receive the methodology for free, contact auto RU .
One cannot help but warn that some PICs cannot withstand so many rewriting cycles (although they should) and simply stop during the "winding" procedure. There have been a lot of reports of such cases lately.
There is another, more progressive and more expensive way of dealing with these panels - re-soldering the PIC. In this case, installing a new PIC12 CE519 or PIC12 F629 chip with a special program, we have the opportunity to set ANY mileage on the panel using the daily mileage reset button. This procedure is multiple, that is, by soldering the chip, you can adjust the mileage an unlimited number of times.
Currently, this PIC12 CE519 is out of production, it is rather problematic to find them, so their appearance on the market has become a rarity. It is for this reason that an "alternative" commercial firmware was developed on another PIC controller, the PIC12 F629. This option does not require any panel rework, except for replacing the PIC. You just need to unsolder the original PIK, solder a new one with a modified firmware and you will be able to set an arbitrary mileage on these panels without the risk of stopping the panel.
Price 2000 rubles for a set of 10 pcs. You can order.
Please do not write with offers to sell the firmware itself or send one microcircuit.
Panels of the Vladimir plant Avtopribor (AP) with a two-line display.
The combination of AP panels with a two-line display is produced in two modifications - with flashing insignificant zeros before the run and without them (newer). The panel with zeros is corrected by the Combiset program, the panel WITHOUT ZEROS is supported only by version 1 .6 with a special adapter.
To "fight" the readings of these panels, Russian craftsmen have come up with a "hard" method - installing an additional processor (peak) of the installed Aweigh... Currently, at least 2 developments are known on the PIC12 F629 and one on the AT90 S2313. Second option somewhat more difficult, hinged elements are used: quartz, 3 capacitors and 3 resistors.
In any case, this is a great alternative to dull and lengthy winding. The revision takes 3-10 minutes, depending on the specialist's training.
Kursk panel "Schetmash" (One and two display)
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For those who like to wind up electronic odometers, a completely free program kurskset© UncleSam to change odometer readings for Kursk combinations. The procedure is performed without disassembling the panel.
The diagram for connecting the panel to the LPT port is shown in the figure. It is convenient to assemble the entire stuffing of the adapter directly in the body of the 25-pin LPT connector. To power the panel, a 12 Volt DC source is required. The place where the contacts are connected to the panel is shown in the photo in a white square. The top right and left pins are used.
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Operating procedure:
one . Unscrew the rear plastic cover of the instrument cluster
2. Solder wires to contact pads or in any other way to ensure reliable contact during operation.
3. Connect the power connector to the white connector.
4 . Supply food. The combination should display the current mileage
5 . Connect the adapter to the LPT port of the computer.
6. Run the program (kurskset 1 - LPT1; kurskset 2 - LPT2)
F 6 - reading odometer readings
F 7 - input of new values.
After entering the readings, press ENTER. Alt + X - exit the program.
7. Disconnect the power supply. On subsequent switching on, a new odometer reading will be displayed.
eight . Put everything back in place.
For lovers of "hand-to-hand combat": The mileage is stored at addresses 00 h - 02 h, in the cells with the lowest addresses are the least significant digits, for example, for a mileage of 13164 km. we will have 64 h, 31 h, 01 h. Cell 07h contains the checksum of the previous seven cells. It is calculated as a simple sum of cells from 00 h to 06 h, followed by truncation of the result to a byte. In cells 08 h - 0 Fh there is duplicate information, which completely repeats the information from cells 00 h - 07 h.
Many have encountered difficulties in using this program. Author's recommendations: using "naked" DOS, the address in Setup-e 378 h. But the panel flatly refuses to communicate with the computer. However, Anatoly Ulanov (aka Ant, Kazan) solved this problem for himself and corrected more than one panel. Here is his technology “... First, you connect as in the description, you give them power and hook the wires to the upper left contact and the right one. You press F7, enter new odometer readings, then you transfer the left wire to the lower left contact and immediately press F6. The panel starts rattling with its motors. You immediately disconnect the power from the panel. You give food again - there should be other readings on the odometer. Apparently, when you cling to the lower left contact and read, a restart occurs and the panel remembers the new readings. Checked several times ... "
I will note from myself that when the power is off, my panel is programmed without problems.
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The method of connecting the KURSKSET adapter to a two-box panel manufactured by "Schetmash", Kursk, was kindly shared with the US, and he, respectively, with us, Damir Gabdrakhmanov. The connection contacts are located to the left of the quartz resonator. The panel does not need to be powered from an external +12 V power supply; for this, it is necessary to connect a wire from the 1st contact on the LPT connector to the power bus on the panel. The common wire, as before, must be connected to the 1st contact of the white block of the dashboard. For stable operation, it is necessary to use transistors with a gain of at least 800. According to the author, everything works fine.
I would like to express my gratitude to Damir Gabdrakhmanov and UncleSam for the information provided.
The well-known "glitch" of the Kursk panels - due to power interference, for example, when scrolling with a starter or a generator malfunction - reset to readings at 141141. After the correction, such a panel works normally - until the next reset ...
The panel "Schetmash" of a slightly different modification can be "defeated" in a slightly different way. Igor Bykov (aka Garry Bull) shared the methodology. The technique is quite barbaric and only makes sense for non-commercial use.
It is necessary to cut the tracks going from the EEPROM to the processor. Yellow arrows in the photo indicate where the tracks are cut.
Then (using the above-described LPT-panel adapter on KT3102) connect to pins 24 of LC2 B. At the same time, if we consider the adapter circuit towards the panel, then the wire coming from the KT3102 collector must be soldered to the contact pad indicated in the upper photo in red arrow with the number "1" (corresponds to the 5th leg 24 LC2 B), and the wire going from the 4th LPT contact to the contact area marked with a red arrow with the number "2" (corresponds to the 6th leg 24 LC2 B) ... Then we hook up this device to the LPT, supply power to the panel, turn on the computer and run the "kurskset" from UncleSam.
By F 7 we write down the new readings, then we check the record by F6. In this case, the odometer itself should be zeros. Next, turn off the panel power, turn off the computer, disconnect the adapter from both sides, and restore the tracks. After turning on the panel, the odometer should already have new readings.
Remember, you need your computer to run in "pure" DOS.
At the beginning 2007 another modification of the "Schetmash" panel appeared 2115 –3801010 -03 ... From the point of view of "twisting" the panel is simple - 24 LC0 memory. The mileage is stored at addresses 00 –02 in the cells with the lowest addresses are the least significant digits, for example, for a mileage of 10028 km. we will have 28 00 01. There are two checksums at addresses 03 and 04; at address 03 checksum of cells with address 02 (FF-adr2), at address 04 checksum of cells with addresses 00 and 01 (FF- (adr0 + adr1)). For example, a mileage of 10,028 km will look like 28 00 01 FE D7.
From time to time, motorists are faced with a difficult task - resetting the speedometer. This can be due to many factors. Corrective measures must be taken in cases where the readings on the speedometer began to be untrue. Most likely, the reason for this was a failure. Only professionals can allow themselves to wind up or unwind the mileage of a car, therefore, in the absence of special knowledge and experience, it is best to contact a specialized institution.
Many people believe that resetting the speedometer is only necessary when the driver wants to hide the vehicle's mileage. But still, there are situations when you simply cannot do without this procedure. The odometer readings change. This is done when replacing any parts, for example, the same odometer or engine.
If during installation the new odometer shows zero mileage, it must be tightened up. If the mileage is too high, if the installed odometer has already been used, the readings are twisted down.
Electronic speedometers are more popular today, despite their expensive price in comparison with mechanical ones. In specialized salons, professionals have a whole arsenal of special devices in order to reset the speedometer.
In order to reset the readings, experts use devices such as a programmer, scanner, adapter and other cunning devices. This process is quite complicated, since the data must be deleted both from the on-board computer and from the memory of the car's microprocessor. Its location in the car can be different. It contains information about mileage and regular inspections at service centers.
In order to throw off the speedometer, experts use a method such as reprogramming. Only high-quality equipment can not harm the performance of other instruments located on the panel. Today, centers specializing in this type of work use several technologies for zeroing readings. One of these methods is pluggable reprogramming, that is, through connectors. It can only be applied if there is an access protocol as well as a memory encoding. An alternative to this method can be a new microcircuit, after the installation of which, the indicators can be changed repeatedly. Another way is twisting using an external generator and signal receiving. In this case, specialists must decrypt the data in detail.
The skills to correct the odometer reading have always been in demand among drivers. In some cases it was required to twist the speedometer and "rejuvenate" the car put up for sale, in others it was necessary to add extra kilometers to "save" service fuel. Twenty years ago, it was possible to twist the mileage on the speedometer with an ordinary electric drill or an electric motor with an adapter. On the gearbox gearbox, the speedometer drive cable was unscrewed, clamped into the chuck of the drill or adapter, and in a couple of hours of winding the speedometer, you could twist the required mileage with your own hands.
Modern technology uses:
- mechanical odometers;
- electromechanical speedometers and odometers;
- electronic speed and mileage meters;
- digital universal means of recording mileage information.
Sometimes the drivers removed the dashboard, disengaging the worm gear and the gear wheel, set the necessary mileage figures with their hands or with a sharp tool on wheels. It is clear that the assembly-disassembly made it possible to twist any mileage, but reduced the accuracy of the instrument readings, and besides, there were traces of penetration. The automotive industry has moved from mechanical speedometers to electromechanical speedometers, and then to electronic ones.
Electromechanical speedometers and odometers
With the switch to electromechanical systems, it has become more difficult to twist the speedometer. The information about the speed of movement was determined not by the number of revolutions of the transmission cable, but by the pulse generator, which replaced the gearbox on the gearbox. The pulses were converted by a stepper motor into the rotation of the worm gear shaft and wheels with numbers on the information board.
Now the odometer unit was often non-separable, and in order to twist the car's mileage with our own hands, it was necessary to translate the numbers on the indicator wheels with a sharp awl, which created the risk of leaving traces of interference. Now twisting the speedometer readings in the old way was troublesome.
Why do you need to underestimate or overestimate the mileage of a car
Until three or four years ago, the basis of the car trade was the sale of used cars. 5-7-year-old models with a mileage of 300-400 thousand km were sold under the guise of 2-3-year-old models with a mileage of 60-90 thousand. ...
Soon, models with electromechanical speedometers left the market, it was more profitable to trade in newer equipment with electronic odometers that cannot be hacked or twisted. If twisting kilometers on 10-year-old models of knowledge was enough, then the mileage of 3-5 year olds with their own hands cannot be changed, now only specialists could correctly twist the speedometer and odometer data on the dashboard. Previously, the issue was solved quite simply - it was necessary to mechanically twist the mileage of the car. With the widespread adoption of microcomputers, any intrusion into machine electronics could end in disaster. There was a problem of how to twist the mileage on the electronic speedometer yourself.
Temptation for service vehicle drivers
The problem associated with winding up the speedometer with your own hands appeared simultaneously with the installation of devices for fixing the mileage of the car in company cars. Fuel dispensing rates were based on calculated data on fuel consumption for a particular vehicle and were generally underestimated. To justify the overconsumption of gas, drivers had to find a solution to how to wind up the speedometer and increase the odometer mileage.
Electronic processor systems for mileage control
In the period 1995-2005, leading car manufacturers began to massively use systems based on digital signal processing and storage in vehicle control units. Now, in modern cars, the mileage is displayed on the liquid crystal display of the dashboard by the speedometer microcircuit after summing the speed sensor pulses. The mileage information is recorded in a special memory chip. It became more difficult to twist the readings.
The emergence of non-volatile memory microcircuits in the microcomputer, which make it possible to record and store information about the car, operating parameters and operating conditions, greatly simplified the work of the workshop specialists.
Now it is not enough to know how to wind up an electronic speedometer; to work, you need reprogramming skills and, of course, special equipment.
Twist the electronic speedometer to reduce mileage
In the 2000s, at the dawn of the digital revolution in the automotive industry, it was widely believed that the average car enthusiast could not figure out how to get into the electronics of a car and how to twist an electronic speedometer with his own hands. Protection of memory chips did not exist or it was implemented at a minimum level. The first generator circuits appeared, simulating the operation of a pulse sensor, after a dozen hours of operation, they displayed the necessary information in the memory of the microcircuit.
Interesting! Very often, a circuit was not used at all to wind up the speedometer; instead, two of the three pins of a conventional fan-cooler used to cool the processor in a computer were connected to the connectors of the control microcircuit.
When power was applied to the cooler, the board built into the fan generated rectangular pulses identical to those supplied by the standard sensor. By adjusting the fan speed, you could wind up the speedometer with your own hands.
Today, automakers use their own development of programs and electronic circuits for driving a car to protect information. For reading, hacking and flashing information in microchips of cars of a certain automaker, universal electronic boards are used. The procedure for winding the speedometer consists in connecting the electronic circuit with your own hands to the corresponding connectors on the car dashboard.
The Internet is full of suggestions to twist the odometer - from simple options on domestic cars to ultramodern ones on the latest BMW models. In domestic cars, most European and American models, with the exception of such giants as Mercedes, BMW, Peugeot, the mileage information was rather weakly protected. The memory microcircuits could be easily removed from the board, especially if they were not soldered, but inserted into the connectors.
Japanese cars turned out to be much more difficult in matters of hacking. Most of the ECU microcircuits were "tightly" imprinted on the board and had no markings. To change the readings, it was necessary to change the board to a similar one.
To hack the microcomputer, the necessary algorithms for rewriting the codes were inserted into the board connected to the diagnostic connectors in advance. For more expensive cars with a powerful protection system, the capabilities of a full-fledged computer with the necessary software are used to rewrite information, which is connected to the CAN-BUS data exchange bus or OBD-II, EOBD diagnostic connectors using an interface board.
Modern ways of twisting mileage readings
The existing car park can be roughly divided into several categories according to the level of complexity of making changes to memory chips:
- standard minimum level of protection;
- increased level of protection;
- exclusive protection measures.
Domestic and foreign cars with a standard level of protection
Almost all "native" brands have dashboards of PO "Schetmash" (Kursk) or "Avtopribor" (Vladimir). The mileage is recorded in the dashboard PIC12F629 memory chip. A connector that would allow twisting the data in memory is not provided by the design, therefore, almost always the dashboard has to be dismantled from the car. On the previous versions of the panels, changes can be made with the replacement of the chip.
In modern foreign cars, information about the mileage is recorded similarly to domestic cars in the memory chip of the odometer or speedometer. To twist the mileage, the owners buy a ready-made solution in the form of a small electronic board with programmed data for a specific model. To change the readings, the device is connected to the CAN-BUS connector and activated by the button.
For your information! Once the board allows you to twist the mileage by 50 thousand km. By overwriting the device with new data from the manufacturer, it can be reused.
Vehicles with additional memory data protection measures
Among the models with conventional systems for storing mileage data in one place - a speedometer memory chip, over the past 2-3 years, automakers have begun to use data duplication in additional blocks. For example, in the Citroen Berlingo, updated information on the mileage is stored in the on-board computer. If you twist only the information in the odometer flash memory, an error will be displayed on the dashboard LCD.
In addition to the computer memory, a duplicate mileage can be stored in the immobilizer or light module microcircuits
To "professionally" twist the mileage or reflash information in memory, European cars use universal tools that allow you to work with the memory of the on-board computer. For example, the 912 TOOL BDM PROGRAMMER model allows you to work with almost a hundred different vehicles, including BMW and Mercedes.
Exclusive access security schemes
Speaking about access to the memory of a car's computer, one cannot fail to mention BMW and Mercedes cars. In most models, especially the X-series, the number of data duplication points can reach 3-4. Each microcircuit records not only the mileage, but also the service interval, engine and control system errors.
A highlight of the Bavarian automakers is the use of the M35080 microcircuit with increased protection against reprogramming. Naturally, it is unrealistic to do the winding of an electronic speedometer with your own hands. To twist the mileage, they use diagnostic equipment, but you can try an authoritative development - the iProg USB universal programmer with a huge set of capabilities.
Video how to twist a speedometer:
There is now a very large selection on the secondary car market in Russia, there are cars of American, Japanese, European production, "Koreans" and "Chinese". Choosing a vehicle is not easy, but there are certain characteristics that are primarily paid attention to.
The following factors are of great importance to buyers:
- year of manufacture of the vehicle;
- general technical condition;
- car appearance;
- mileage (mileage).
A more sophisticated buyer knows a lot about cars, and does not always focus on the number of kilometers traveled by a vehicle. Beginners, on the contrary, try to choose a suitable car with low mileage on the odometer, but the numbers displayed on the scoreboard do not always correspond to the actual distance traveled.
The tradition of winding the odometer readings down has existed for a long time; back in Soviet times, the mileage was often twisted. But the meter readings are not always underestimated, in some cases the mileage is increased:
- the driver of a car at the enterprise may not go on a flight, but ascribe extra kilometers to himself. So he writes off gasoline, selling it "to the left";
- the chauffeur does not go on the flight, he does his own business at this time.
Why the mileage is twisted, it is understandable, when selling a used car with a small number of kilometers traveled, it rises in price. Enterprising sellers try to present a vehicle in a more favorable light, especially since a car with low mileage is bought faster.
What are the odometers
The odometer in the car is used to read the kilometers traveled; in total, there are three types of these devices:
- mechanical;
- electronic;
- electromechanical.
All kilometer meters are read from the gearbox, on some models the speedometer gear is installed in the transfer case. The speedometer drive can be either electrical or mechanical (cable), but in the electrical version, the readings are more accurate.
A mechanical odometer has a series of numbered wheels that are usually located on the speedometer itself. Due to the gears, the wheels rotate, respectively, the numbers on the rotating drums change.
The electronic odometer reads pulses, many modern devices use a Hall sensor, and the kilometers are displayed on an electronic scoreboard.
Electromechanical devices have both mechanical and electronic sensors - usually the drive is mechanical in them, and the electronics displays information on the display.
Potential buyers of used cars are interested in how they can find out the real mileage of the purchased vehicle. There are many ways to determine the mileage traveled, and we'll talk about them.
On many modern cars, the mileage is displayed not only on an electronic display, the readings are duplicated in the keys, in various electronic units (ABS, gearbox, transfer case). You can view the readings of duplicate counters on special scanners or on computer devices that are connected to the electrical circuit of the car. For example, on the first generation BMW X5, the data can be taken from a handout.
Sellers can twist the mileage readings on any odometer, including an electronic meter, for this very reason, one should not trust the readings on the electronic scoreboard. The honesty of the run can be checked by the service book, where there are all marks about the passed MOT, for this you should contact the authorized dealer who carried out the maintenance.
To find out if the mileage of a car is twisted, you can try by paying attention to the odometer counter:
- On a mechanical device, when rewinding a run backwards, the numbers are often uneven, so you should pay attention to their location. It is difficult to judge the condition of the speedometer cable, the fastening nut could be unscrewed not only for the sake of twisting the run, but also to replace a faulty cable;
- To twist the mileage on the electronic odometer, intervention in the electronic circuit of the device is required. Whether the mileage was twisted or not, you can determine by the traces left by the tool during disassembly.
Experienced motorists determine the approximate mileage of a car by external signs, by the state of some parts. Many people advise to pay attention to the following items when buying a car:
- the degree of wear on the steering wheel and gear knob;
- worn out rubber pads on the brake pedal and gas pedal.
With high mileage, these parts may indeed have signs of wear, but all this is subjective. To some extent, this is true, but here you need to consider the following points:
- pedal pads, steering wheel and grip can be changed, in addition, many parts in good condition are sold at disassembly;
- all people use their car differently.
The easiest way to judge the kilometers traveled is by the state of the left side of the driver's seat. If there are scuffs or holes in this place, most likely, the car's mileage is solid - the lining has signs of wear most often after 200 thousand kilometers.
When buying a used car, you should carefully examine the engine compartment. When changing the engine oil at the service stations, the craftsmen leave stickers and write the mileage on them. The seller, the reseller, might not have found these stickers, and if you're lucky, you can find out the approximate mileage by them.
A simple example - the seller claims that the car drove 120 thousand km, but upon close inspection, a sticker was found under the hood about changing the oil in the engine at a mileage of 280 thousand km. No further comments are needed.
On what cars mileage is most often curled
Very often, the kilometers traveled are twisted on expensive cars with a rich set. To check the actual mileage of the vehicle, you can offer the seller to conduct an independent examination.
It is difficult to check the twisted mileage on "truckers" that have been in constant use. Such machines are constantly in motion, winding many kilometers. Often many motorists calculate the actual mileage depending on the age of the car, for example, if the car is three years old, it runs on average 60-100 thousand km. "Long-distance trucker" during this time can run over 300-350 thousand km. It is very profitable for the “outbid” to rewind the run here - most often such cars are operated on suburban roads in a sparing mode, therefore they look very decent.
The easiest way is to make the meter spin in the opposite direction on a mechanical odometer, here almost everyone can twist the car's mileage with their own hands. For this procedure, you do not even need to disassemble the instrument panel. This is done as follows:
- the speedometer cable is turned away from the gearbox;
- an electric drill with a reverse is taken;
- the drill connects to the cable and turns on.
Having rewound the required number of kilometers, the drill is turned off.
In order to change the mileage on the electronic odometer, it is necessary to disassemble the instrument panel. In the filling of the electronic meter there is a special microcircuit responsible for the mileage. On electronic odometers, the mileage is changed using:
- programmer;
- special programs for calculating odometers.
Who rolls the mileage on the odometer
Unfortunately, in Russia, the mileage is twisted by almost 90% of cars in the secondary market. Car owners use the services of car services; some auto centers do not hesitate to advertise their services publicly. The law of the Russian Federation is not prohibited from engaging in such shenanigans, therefore, when buying a used car, you need to be vigilant. Abroad, fans of mileage are punished, but not all scammers are caught. For example, a third of cars with a twisted odometer come from Germany.
You can twist the real mileage for any car, another thing is that for some cars it is more difficult, for some it is easier. The easiest way is to twist the mileage in European cars, much more difficult for Japanese cars. But the difference in the price of a car with different mileage is still more noticeable than the amount that one has to pay for twisting the mileage.
If you are buying a used car:
- First of all, ask for a service book with maintenance marks - this is the only document that actually reflects the number of kilometers traveled.
- Do not hesitate to make inquiries with the authorized dealers where the maintenance was carried out, for this you can introduce yourself as the owner of the car. When all the data is confirmed, you can safely make a purchase.
- To check the technical condition, ask the vehicle owner to carry out a deep diagnosis of the car. It's good if you have friends in the car service - they will objectively assess the condition of the vehicle.
- If you buy an expensive car with a rich set, suggest driving to an authorized dealer in order to read the data from the key. Dealers reflash electronic components, but the dealer retains the correct data (of course, if the dealer is not bribed).
- You should pay attention to the state of the service book - if it looks like new, then this is suspicious. It is possible that the document may be forged.
Surely many drivers are faced with the need to wind the mileage on the speedometer for various reasons. Some found a way out of this situation by contacting specialists, while others could not solve the problem, although in fact everything is very simple.
Why shouldn't you be negative about the mileage boost?
Most car enthusiasts have a preconceived notion about who decides to wind the odometer. The fact is that unscrupulous sellers resort to odometer winding, wanting to hide the true mileage in order to sell a used car at a higher price.
But it is worth noting that the mileage is twisted not only in the direction of decreasing. There are objective situations requiring an increase in mileage:
- The need to undergo maintenance at a service center ahead of time, for example, before a long trip.
- Replacing the dashboard causing the odometer reading to fail.
- The need to twist the mileage due to the replacement of the engine.
- Installation of wheels of non-standard diameter, due to which the actual mileage does not correspond to the actual one.
- Fair compensation for fuel costs.
Of course, there are times when you need to reduce your mileage. Indeed, a neat owner does not always have an excellent condition of the car corresponding to the true mileage, which is especially upsetting during the sale, when the buyer, having seen an impressive figure on the speedometer, demands to drop the price. In this case, it is enough to simply wind up the mileage, if the otherwise good technical condition of the car does not give out its real age.
How to boost mileage?
Many motorists, even those who need a mileage boost for objective reasons, often refuse this procedure to the detriment of their own interests, although in fact, mileage boost is absolutely safe for the electronic systems of the car.
You can wind up the speedometer using a special device called the "winder". The device is intended for winding up the electronic speedometer readings on cars manufactured after 2006. Although if the car has an earlier year of manufacture, you can also pick up a device to change the mileage.
Distinctive advantages of the device for cheating the speedometer can be considered:
- The device does not require any special installation.
- It is connected via the diagnostic connector directly in the car.
- Any car owner can use the winding of the speedometer, since the device is characterized by ease of operation.
- The twist is compact, so it can be stored even in the glove compartment.
- The high winding speed of the speedometer can reach 5 thousand kilometers per hour.
- The device is suitable for any brand of a modern car, regardless of engine size or gearbox type.
- The winding changes the mileage readings at the same time in each redundant block.
