To give you the short answer “Yes”.
The Ecu stores when any changes have been made to it. So if for example you mapped your car. Something broke so your mapped it back to take it to audi to claim in warranty. The ecu will have time stamped that changes had been made twice.
should have said a non main dealer, as in a general garage that buys and sells. Is this ECU tech bespoke to only main dealers generally?
Car is well outside warranty due to age and mileage.
If it's out of warranty, then why ask? Won't affect anything with an independent dealer, as they won't re-flash your ECU.
Are you asking because your selling the car? If you are its not really the done thing to plug a car in and check for codes especially not at a car garage. Maybe if you were selling to a audi enthusiast.
A garage may scan it but if they do it will just be for fault codes, to be honest if you were trading it in to audi they probably wouldn’t scan it either as they would just sell it at auction
That's a full reset .
This is not possible on newer ECU's including ours. They might be able to put stock / OEM software back on the ECU but the flash counter cannot be reset.Some mappers claim they can set the ECU back to normal for warranties etc so surely previous work can be hidden?
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