I was sent this device by a mechanic who found it behind the instrument panel of a car. When removed another 40,000km appeared on the clock. The unit appears to "massage" the data between the ECU and the display.
The design of the circuitry is very functional. Basically two CAN (Controller Area Network) chips, a processor and some power supply components. The design is actually very neat.
The real work will be done by the processor, and I'm not sure whether the unit passes all other data through untouched except the odometer data or if it buffers everything.
From the type and spec of the processor I'd guess that this has been developed on an Arduino style platform, but I could be wrong. It just has that modular look to it. The Dupont style sockets and the way one has been hacked into a very robust plug is also a clue that this was a geeks personal project that escaped or evolved.
The keywords to find these online are "can filter 18 in 1". Here's an eBay search link:-
https://www.ebay.com/sch/i.html?_from=R40&_nkw=can+filter+18+in+1&_sacat=0&LH_BIN=1&_sop=15
Keep in mind that their function is to reduce the apparent mileage of a vehicle, and this may be a criminal offence in some countries.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.
The design of the circuitry is very functional. Basically two CAN (Controller Area Network) chips, a processor and some power supply components. The design is actually very neat.
The real work will be done by the processor, and I'm not sure whether the unit passes all other data through untouched except the odometer data or if it buffers everything.
From the type and spec of the processor I'd guess that this has been developed on an Arduino style platform, but I could be wrong. It just has that modular look to it. The Dupont style sockets and the way one has been hacked into a very robust plug is also a clue that this was a geeks personal project that escaped or evolved.
The keywords to find these online are "can filter 18 in 1". Here's an eBay search link:-
https://www.ebay.com/sch/i.html?_from=R40&_nkw=can+filter+18+in+1&_sacat=0&LH_BIN=1&_sop=15
Keep in mind that their function is to reduce the apparent mileage of a vehicle, and this may be a criminal offence in some countries.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.
W222 – Mercedes-Benz S-Class 2013 to 2020.
W166 – Mercedes-Benz M-Class 2012 – 2015.
S4 = Audi A4 – the performance version of Audi's A4 sedan.
W222 is mercedes S-Class and w166 is mercedes m-class. Maybe it refers to this.
huh, 3rd party modifications. I BET YOU it was a used car salesman that came up with this idea.
There is an article in hackaday where they could read the firmware and analyze it. Search for “inside a can bus mileage manipulator”. Thanks for the video!
If this device was permanently in the dash circuit doesn't it suggest its function was to display a lower mileage rather than reprogram the mileage to a lower figure? In the latter case the device would be removed afterwards and not left in place.
I’ve seen a taxi with these installed as a passenger. The speedometer was also measuring 0.
Seems that a decent OBD scan tool would show the truth. Our bi annual emissions tests get the actual mileage as well as emissions data from the ECU and print it with the rest of the vehicle data on the emissions report. Another reason to take a car you are thinking of buying to a good mechanic that will scan it.
Doing a quick search on CAN gateway and CAN gateway module brought up some interesting results.
W222 and W166 are both Mercedes engine models they fit to various vehicles so it’s non car model specific but it’s engine specific for Mercedes, BMW I would imagine covers all models and S4 could be an engine code for another marque or could mean Audi S4.
Excellent video…..I hate canbus 🤣
That 25,000 miles translates to a ton of money. You better believe I'm extracting that value from the previous owner somehow.
Any luck ever reverse engineering the firmware? If locked, were there any other youtubers that are good with hardware glitching who wanted to try? Maybe it would provide some clue of where the naughty versions where programmed.
Did you check with your local laws first to make sure just possession of such a [configured] device isn't a crime? Given the stupidity of some laws that imply guilt without any requirement for proof of such activity or intent, I wouldn't assume
I know, at least in Chevrolet's, that the mileage is stored in the cluster, so if you get a used replacement, you need to get it reprogrammed by a special device. Not sure this would work in a Chevy…
W166 could be a 2011 Mercedes GLE
W222, a 2013 S-Class
S4, Audi S4??
Well, and BMW is self explanatory…
It would be fun if you could dump the chip to get the code out of it
I wish I had paid more attention in electronics.
I was screaming in my head "PUT THE PICTURE OF THE ONE WITH THE STICKER UNDER THE ONE WITHOUT, AND JUST EXPOSE THE COLORED WIRES BY SLIDING THE TOP PICTURE OVER TO THE RIGHT AN INCH". It never happened, but that's okay. Cool video, Clive.