By YOUCANIC on Feb 25, 2019
If your Audi key fob battery dies or is weak, you will not be able to lock/unlock the car. The Start/Stop button will not work. On newer Audis, you will get a warning on your dashboard that displays a key and battery symbol. To fix these problems, change the battery on your Audi key fob.[toc]
Watch the video on how to change the battery on Audi three button key fob. This keyfob was used in most 1997 to 2005 Audi vehicles. This Audi remove was used in models such as Audi A4, A6, A8, TT etc.
Battery Size: CR1620 (ONE)
Replacement Shell: Audi Keyfob Shell
Watch the video on how to change the key fob battery on Audi keyless entry key fob also known as Audi smart key. This key fob is used many Audi cars since 2008 including A Q R S TT models. If your Audi key fob battery is too weak or dead it will prevent you from starting the car using the Start/Stop button.
Battery Size: CR2032 (One)
Replacement Shell: Audi Smart Keyless Entry Fob Shell
Part number / FCC ID: IYZFBSB802
Battery Size: CR2032 (ONE)
We hope that these videos and step-by-step instructions helped you learn how to change the battery on any Audi key fob remote. Over the years, Audi has come out with a few different key designs. These instructions were written to help owners of Audi A3, S3, RS3, A4, S4, A5, S5, A6, S6, A7, S7, RS7, A8, S8, Q3, Q5, SQ5, Q7, TT, R8 change the key fob battery.
No. The key will work and no programming is required to change the battery. If your Audi key fob does not work after you change the battery try the following.
Open the Audi using the metal key. Next press the unlock button on the remote. Enter the vehicle and insert the key into the ignition. Lastly, remove the key from the ignition.
If the key synchronization procedure does not work, open the key and make sure the positive (+) side of the battery is on the correct side.
Yes. If your Audi key fob is damaged or the shell is broken you can consider replacing just the shell. New Audi key shells can be purchased online.
No. Audi does NOT use rechargeable batteries in their key fobs. It is ok to use a rechargeable battery. Keep it mind that once the battery dies, you will need to remove and charge the battery or simply replace it.
Open the key again and make sure the battery is installed the right way. Check that the positive (+) side of the battery is installed on the required side.