Hi there.....
So, almost everyone who knows what chip tuning is has probably heard about the "TD1 code" that Audi and Volkswagen uses when they "flag" a vehicle that was found to be tuned. But, did you know there are more of these codes (Keys) that could be forever attached to your vehicle?
There are actually many more of Warranty Keys, as the manufacture calls them, that could be flagged when a vehicle goes into the dealer for warranty work or a recall or even an oil change service and you may not even know your vehicle was checked and sometimes worse, the dealer or manufacture may not tell you now have one of these codes.
Here is a list of the "Warranty Keys" (as of 2018) that Audi and Volkswagen use:
The TD1 warranty key is automatically 'flagged' by the dealerships diagnostic equipment. Not all vehicles are part of this automatic detection, however the ones that are detected, the dealership will not know this process is happening. Oh, by the way, the warranty Key TD1 is irrevocable and can not be added manually.
If the vehicle is not automatically detected, the dealer technician, if he/she so desires, can run the "Specified vs. Actual
ECM Software comparison" test plan to if they suspect the vehicle has a tune and this could set the TD1 key as well.
Lastly, the dealer technician is supposed to 'manually enter a Warranty Keys if "Powertrain tuning is Suspected" or they found any of the above conditions.
You can call your local dealer and ask them to check if your vehicle has any Warranty Keys, they should be able to find this information with the VIN.
This information is deemed reliable but not 100% guaranteed and is subject to change. This is only a guide and if you need additional information please contact the manufacturer.
Hope this helps,
drpeter
So, almost everyone who knows what chip tuning is has probably heard about the "TD1 code" that Audi and Volkswagen uses when they "flag" a vehicle that was found to be tuned. But, did you know there are more of these codes (Keys) that could be forever attached to your vehicle?
There are actually many more of Warranty Keys, as the manufacture calls them, that could be flagged when a vehicle goes into the dealer for warranty work or a recall or even an oil change service and you may not even know your vehicle was checked and sometimes worse, the dealer or manufacture may not tell you now have one of these codes.
Here is a list of the "Warranty Keys" (as of 2018) that Audi and Volkswagen use:
Key | Description | Affected system |
T10 | Engine Tuning | Engine is modified |
T23 | Powertrain Tuned | Powertrain affected |
TD1 | "Vehicle Check Code" | Software in the ECM has changed |
TXD | "Vehicle Check Code" | Software in the ECM has changed |
T40 | Running Gear altered | Changes to Brakes, Wheels, Suspension, Gearing including differential |
T26 | Exhaust modifications | Non-OEM exhaust systems |
T50 | Vehicle Body alterations | Body panels changed(non-OEM)/modified |
T68 | Interior Altered | Non-OEM Trim or Interior |
T90 | Instrument Cluster changes | Additional Instrumentation and/or NON-OEM cluster |
USB | Buyback | Vehicle buyback, not qualified for CPO warranty |
UST | Vehicle totaled | Vehicle totaled, no warranty, except emissions warranty |
The TD1 warranty key is automatically 'flagged' by the dealerships diagnostic equipment. Not all vehicles are part of this automatic detection, however the ones that are detected, the dealership will not know this process is happening. Oh, by the way, the warranty Key TD1 is irrevocable and can not be added manually.
If the vehicle is not automatically detected, the dealer technician, if he/she so desires, can run the "Specified vs. Actual
ECM Software comparison" test plan to if they suspect the vehicle has a tune and this could set the TD1 key as well.
Lastly, the dealer technician is supposed to 'manually enter a Warranty Keys if "Powertrain tuning is Suspected" or they found any of the above conditions.
You can call your local dealer and ask them to check if your vehicle has any Warranty Keys, they should be able to find this information with the VIN.
This information is deemed reliable but not 100% guaranteed and is subject to change. This is only a guide and if you need additional information please contact the manufacturer.
Hope this helps,
drpeter
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