57 Door Handle Touch Sensors (AUDI Advanced Key) Inoperative (GROUP 57, NO. 24-53)

WARNING: This page is about the A4 Quattro Premium, 2.0L Eng VIN A, which is a different variant/trim than selected.

Publication date: 2024-07-31
Reference number: GROUP 57, NO. 24-53
Supersedes refnos: 2027368, 2027368/1, 2027368/2, 2027368/3, 2027368/4, 2027368/5, 2027368/6, GROUP 57, NO. 11-53, GROUP 57, NO. 12-73, GROUP 57, NO. 13-86, GROUP 57, NO. 14-04, GROUP 57, NO. 24-43

57 DOOR HANDLE TOUCH SENSORS (AUDI ADVANCED KEY) INOPERATIVE

TECHNICAL SERVICE BULLETIN

Reference Number(s): GROUP 57, NO. 24-53 (2027368/6), Date of Issue: July 31, 2024

AUDI:	2018-2025 All Audi Vehicles
GROUP:	57 - Doors - Front

Superceded Bulletin(s): GROUP 57, NO. 24-43, Date of Issue: May 23, 2024

SERVICE INFORMATION

57 24 53 2027368/6 July 31, 2024. Supersedes Technical Service Bulletin Group 57 number 24-43 dated May 23, 2024, for reasons listed below.

APPLICABLE MODELS AND YEARS

Model(s)	Year	VIN Range	Vehicle-Specific Equipment
All Audi Vehicles	2018 - 2025	All	Audi advanced key

CONDITION

REVISION HISTORY

Revision	Date	Purpose
6	-	Revised header (Updated with 2025 model years)
5	05/23/2024	Revised header (Updated with all models to model year 2024) Revised Technical Background (Updated concepts with new models)
4	10/31/2014	Revised header data (added A3, Q3, and RS7 models, and model years 2015 and 2016) Revised Technical Background (added A3 and Q3 model information)

The exterior door handle touch sensors (Audi 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 1

CONCEPT-RELATED RESTRICTIONS

Audi 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.
If the customer reaches into the door handle while touching the lock sensor to lock the vehicle (Figure 1), 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.
The Audi advanced key system needs a short response time for the key identification. When the door handle is grabbed and pulled very quickly, the key may not yet be identified, and the vehicle does not unlock.
Unlocking the door after it is locked not possible for a brief period. This allows the customer to check that the door is locked by pulling the handle.
If an external device is plugged in to the 12 V socket or USB connection, its signals may interfere with the advanced key function.
A3 (8V), A4 (8K), A5 (8T, 8F), A6/A7 (4G), A8 (4H), Q3 (8U), Q5 (8R), R8 (4S):
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 the Audi advanced key is only possible after an ignition cycle.

Q7 (4M), A4 (8W) and A5 (F5) up to production 45/2016:

The ignition must be switched on for the advanced key to work again.

All others:

The door handle sensors are no longer switched off after a stationary period.
If the vehicle battery is discharged, the energy management system gradually deactivates unnecessary convenience functions. It is possible that the vehicle temporarily will not unlock with the Audi advanced key.
Environmental influences such as dirt, snow and salt can influence the conductivity of the door handle.

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 part and service references provided in this TSB (2027368) are subject to change and/or removal. Always check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.

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