Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
General information
On vehicles with Telematics, activate Telephone/Telematics Control Module J526 service mode before disconnecting Battery A → Service mode, activating/deactivating .
If the Battery A is reconnected, follow the procedure for disconnecting and connecting the Battery A → - 27 BATTERY, STARTER, GENERATOR, CRUISE CONTROL . Deactivate Telephone/Telematics Control Module J526 service mode → Service mode, activating/deactivating .
Telephone systems
- Telephone fixed installation
- Cellular telephone preparation
With the cell phone preparation with Bluetooth Antenna R152 , all Cellular Telephones R54 approved by Audi can be operated with the Bluetooth interface.
Information on operation and approved cellular phone types:
- www.audi.de/telefon
It is not possible to connect other devices via Bluetooth, for example headset, laptop, PDA, or similar.
Diagnosis is performed using "Guided Fault-Finding".
Repairs on antenna wires → - 97 WIRING .
Repair to CAN bus lines → - 97 WIRING .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.