Mileage Data From Control Units
Hey there, I'm interested in pulling data from the different control units. I know all bands and modes differ from each other. as you know big fraud going around in the used car market. I know all physical wear and tear points to pay attention.
sometimes it's hard to explain to consumers that a 30k mile vehicle's driver seat looks like a 200k mile vehicle or brake pedal, steering wheel, hazed headlights, worn buttons, etc… I cant remove the instrumental cluster and show that EEPROM was touch, the cluster screws were touch. even worse if milage fraud was done using this (don't want to say the name) OBD device screw and EEPROM was never touched or if milage blocker used nothing recorded.
My question what device do I need to access all those control units to pull data? I know it depends on brand and model and knows that all models don't have SRI and all model don't store data in ECU, PCM, etc.
currently, I'm using Launch X431 and a couple of OEM laptops mostly pulling data from the airbag and freeze frame (if there is the previous dtc) from tranny and etc…. but I'm not able to see real milage I can only see the highest recorded only.
all that I have is not strong proof even I know a car has a milage rollback.
any advice any help will be appreciated.
There is not “one” device that would do that. It's so specific that you really have to look at it from a brand to brand and even a model to model perspective. Even then there will be units where fraud detection will not be possible. Some manufacturers try to watch out using a flash counter…but even the flash counter can be manipulated when you know where to look at. And if you're interested in…
exactly as you mentioned flash counter can be reverse-engineered . Thank you
As a dealer tech I can verify that a lot of your questions is manufacturer specific to their scan “house” scan tool. In car videos “south main auto repair” I’ve seen the tech use an emulator developed by “Bosch “, but he has to pay a fee for a one day pass per manufacture. When people flash Subarus Back to stock I look at the ignition counter. IE you bring me a car with a CEL and the ignition…
I saw a couple of videos from his channel, not that specific one. i guess its Bosch’s KTS 250. good point about the ignition counter ty. I guess there is no way to get exact numbers from control units.
Hello, I would recommend AUTOCOM “ID” tool. It's purpose is to identify intrusion into ECU memory, mileage and VIN changes. Very often mileage calibration devices change value only in cluster memory, while in many cars it could be also saved in other locations, like keys, TM, etc. Device scans all ecus where VIN and mileage are stored by VIN and shows results. Ofc ourse in case mileage is…