Battery, Removing and Installing
Removing
CAUTION:
- For vehicles with Telematics, activate the Telematics control module service mode using "Guided Fault-Finding" before disconnecting the battery.
- Switch off ignition and remove ignition key.
- Remove right luggage compartment side trim cover - arrows -.
- Remove covers - 1 - and - 2 - over battery.
- Connect the battery charger for battery assistance mode → Battery, Preparing for Support Mode .
- Disconnect ground (GND) wire - 2 - and B+ wire - 4 - from battery.
- Remove hose of central venting system - 3 -.
- Remove bolt - 1 - at battery bracket.
- Lift battery out of right luggage compartment.
CAUTION:
- Battery and sulfuric acid disposal regulations must be followed when disposing of batteries → 27 - BATTERY, STARTER, GENERATOR, CRUISE CONTROL .
Installing
Install in reverse order of removal, observing the following:
NOTE:
- Batteries from the Audi Parts Program have a bottom strip-adapter for adapting to different grip channels. Whether and how bottom strip-adapter is used, refer to operating instructions for battery.
Fig 4: Inserting Battery Into Battery Holder So Tab Of Rear Battery Holder Engages Into Cutout For Battery Clamping Strip
- Insert battery into battery holder so that tab of rear battery holder - arrow - engages into cutout for battery clamping strip - 1 -.
- It should no longer be possible to move the battery.
- Secure battery bracket with bolt - 1 -.
NOTE:
- Lug at battery bracket must engage in recess at battery base strip.
With ignition switched off and electrical consumers switched off, connect battery in the following sequence:
- Connect positive cable terminal clamp - 4 - by hand to battery positive terminal "+" and tighten nut.
- Connect pole shoe - 2 - of ground cable by hand to battery negative terminal "-" and tighten nut.
- Connect central venting system hose - 3 - while observing notes → 27 - BATTERY, STARTER, GENERATOR, CRUISE CONTROL .
- Check battery after installation for secure seating → 27 - BATTERY, STARTER, GENERATOR, CRUISE CONTROL .
- Stop battery assistance mode at battery charger.
If the battery was not removed and installed in assistance mode, the following steps must be performed after reconnecting the battery:
- Deactivate service mode of Telematic Control Module using "Guided Fault-Finding".
- Activate automatic open/close function of electric window lifters. Refer to Owners Manual.
- Turn ignition key in ignition lock once to left as far as it will go.
- Synchronize secondary and additional keys to ensure remote control operation.
- Check DTC memories of all control modules and erase "Undervoltage" DTC if necessary.
NOTE:
- After re-connecting power supply, ABS warning lamp may only go out after the vehicle has been driven a few yards.
If the battery was replaced, Energy Management Control Module J644 must be coded anew.
Tightening Specifications
| Component | Nm |
|---|---|
| Bolt to bracket | 24 |
| Battery terminal clamp to battery terminal | 6 |