Friday, 20 September 2019

******** 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.



751



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.