Audi Repair Questions? Ask a Mechanic for Answers ASAP
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I'm sorry to tell you to this but that antitheft system requires a dealer tool, or something at dealer level to check the keys. Sounds like the immobilizer dropped the information on the keys, this should not happen.
Disconnecting the battery should not work, it should just make the vehicle loose all the presets you have, radio stations, phones, memory seats, and cause error codes for voltage issues in every module.
Without the scan tool you really can not do much, need to have it towed to the dealer or to a mechanic with a Autologic with the audi package
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Please let me know if you have any more questions
Being a mechanic/service manager that never uses a dealership sure (give the guys at the dealership something to do) Dealerships make so much money for nothing, drives me crazy,
Its your choice you can disconnect the battery again, or you can let it run down at this point it not a issue, can not start the vehicle
As for the daylight runners, I believe they are a part of the system but they should not stay on, something is telling them to
Let me know how things turn out