Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB) Technical Service Bulletin # 571386 Date: 130320
Keyless Entry - Door Handle Touch Sensors (Advanced Key) Inop.
57 Door handle touch sensors (Advanced key) inoperative
57 13 86
2027368/3
March 20, 2013
Supersedes Technical Service Bulletin Group 57 number 12-73 dated September 24, 2012 for reasons listed below.
Vehicle Information
Condition
The exterior door handle touch sensors (Advanced key) are inoperative on one or several doors.
The key blade can be used mechanically (driver door or trunk) or remote electrically (key remote buttons) to unlock and lock the vehicle.
Technical Background
Concept-related restrictions
1. Advanced key functions can temporarily be disabled by interference from transmitters in close proximity to remote key, using the same
frequency range (e.g. cell phones, wireless headphones, other vehicle keys etc.) as no positive identification is possible.
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2. If the customer reaches into the door handle while touching the lock sensor to lock the vehicle it will not be locked. This is because the unlocking
command from the sensor is sent at the same time and has a higher priority.
3. The Advanced key system needs a short response time for the key identification. When grabbing and pulling the door handle very quickly, the
key may not yet be identified and the vehicle does not unlock.
4. Unlocking the door after locking it is not possible for a brief period. This allows the customer to check that the door is locked by pulling the
handle.
5. To reduce power consumption, the door handle touch sensors are deactivated after the vehicle has been parked for a few days. It is then
necessary to first wake the vehicle by pulling the door handle once and then a second time to open the vehicle. In this situation, locking the
vehicle with advance key is only possible after an ignition cycle.
6. If the vehicle battery is discharged, the energy management system gradually deactivates unnecessary convenience functions. It is possible that
you will temporarily not be able to unlock your vehicle using Advance key.
Production Solution
Not applicable.
Service
Explain the concept-related restrictions to the customer.
Warranty
This TSB is informational only and not applicable to any Audi warranty.
Additional Information
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service
manuals for the latest information.
