Audi Remote Key Inoperative

Audi Remote Key Inoperative

Replacing the remote will not resolve the concern. 

Models: All Audi Vehicles 2000 – 2025 All Not Applicable

CONDTION: Central locking via remote control does not work. The locks can still be operated manually.

POSSIBLE CAUSES:

Situation 1: Missing synchronization between the remote control key and vehicle because the battery has been

disconnected, the battery of the remote control has been replaced, or the remote control key has been used

several times outside the vehicle’s range.

Situation 2: If other transmitters operate in the same frequency range, the remote control key may have been temporarily switched off because a clear identification of the key is not possible. This is necessary to prevent an unintentional unlocking by other transmitters.

NOTE: Measuring the key battery voltage with a voltmeter is not effective. To assess the quality of the key battery, it is necessary to perform load measurements with an appropriate measuring device at room temperature. On all models, a weak key battery is indicated by a message in the instrument cluster and a corresponding event memory entry (except Q3 8U).

Situation 1: Perform the synchronization between each remote control key and the vehicle.

A4 (8D, 8E, 8H) 1996 – 2009:

a. Open the vehicle mechanically with the key.

b. Press the unlock button of the remote control key.

c. Insert the key into the ignition and switch on the ignition.

d. Switch the ignition off again and remove the key.

e. Press the unlock button or the locking button of the remote control key.

R8 (4S) 2008 – 2023, TT (8J) 2008-2014, TTR, A3 (8P and 8V) 2005–2013 and 2015-2020, A6 (4B) 1999 -2005:

a. Press one of the buttons of the remote control key.

b. Lock or unlock the vehicle once mechanically with key.

c. Press one of the buttons of the remote control key again.

d. The process must not take longer than 30 seconds.

A4 (8K) 2009–2016, allroad (8K) 2013–2016, A5 (8T) 2008– 2017, A5 Cabriolet (8F) 2010 – 2017, Q5 (8R) 2009 – 2017, A8 (4H) 2011 – 2017, A6 and A7 (4G) 2012 – 2017:

a. Press a button on the remote key within the range.

b. If necessary open the vehicle with the emergency key on the door lock.

c. Switch the ignition on and off.

A6 (4F) 2005-2009, A8 (4E) 2003-2010, Audi Q7(4L) 2007–2016:

a. Open the vehicle mechanically with the key.

b. Insert the key into the ignition and switch on the ignition.

c. Switch the ignition off again.

A4 (8W) 2017 – 2024, A5 (F5) 2017 – 2024, A6 (4A) 2018 – 2024, A7 (4K) 2018 – 2024, A8 (4N) 2018 – 2024, Q5

(FY) 2018 – 2024, Q7/Q8 (4M) 2017 – 2024:

a. If necessary, open the vehicle via the door lock using the emergency key.

b. Switch on the ignition.

Situation 2: If the synchronization does not help, check whether there are any interfering senders nearby.

Check whether there are any interfering senders in the vehicle. If interference was responsible for the condition, explain the Technical Background to the customer. If the synchronization procedure was not successful, adapt the remote control key(s) to the vehicle’s central locking system. Sometimes following the “erase all memory positions first” test plan produces better results. Replacing the remote will not resolve the concern. 

You May Also Like

Solving Intermittent Overheating

New cooling systems anticipate and influence changes in coolant temperature.

If a vehicle is overheating, the diagnostic process has become more complicated in modern cooling systems. Part of the reason is cooling systems have become more integrated with the engine management and emissions reduction systems. Old cooling systems reacted to heat generated by the engine. New systems anticipate and influence changes in coolant temperature. 

Today’s Fuel Pressure Diagnostics

Direct injection pressure is measured with sensors, and the signals are used to determine pump speed and/or volume.

ADAS Calibration Aborts

Knowing the common “hiccups” can save you time and money.

Electric Power Steering Diagnostics

Load management for steering systems.

Solving VW False Fuel Pressure Reading

First, verify the customer did not run out of fuel at the time the DTCs were stored.

vw steering wheel squeak

Other Posts

Now Available – June’s Digital Edition of ShopOwner

The June issue includes technical and management content and is free to download.

Don’t Miss The May Digital Edition of ShopOwner

The May issue includes technical and management content and is free to download.

Audi MLB Alignment

The alignment of these vehicles can be straightforward mechanically.

Don’t Miss The April Digital Edition of ShopOwner

The April issue includes technical and management content and is free to download.