Battery in luggage compartment, removing and installing

WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2009 Audi S4, 2009 Audi A4, 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

Prior to handling or servicing batteries, read, understand and observe the Warning and Safety Measures for lead-acid batteries → Warnings and safety measures for lead-acid batteries
Always wear suitable protective clothing Eye protection and protective clothing: .

CAUTION: Before beginning repairs on the electrical system:

Where applicable, obtain anti-theft radio security code.
Switch off all electrical consumers.
Switch the ignition off and remove ignition key.
Disconnect negative ( - ) battery terminal.

After reconnecting vehicle battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows according to Repair Information and/or Owners Manual.

Removing

Special tools, testers and auxiliary items required

Fig 1: Identifying Torque Wrench V.A.G. 1331

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Torque wrench VAG 1331 or (equivalent 5 - 50 Nm)

Fig 2: Removing/Install Battery From Battery Console Retaining Strip

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Lift luggage compartment floor covering and secure.
Remove formed insert behind battery - 5 - upward - arrow -.
Disconnect negative ( - ) terminal - 6 - from battery
Fold positive terminal cover - 2 - upward.

Then disconnect positive ( + ) terminal - 1 - from battery.
Disconnect central gas venting system hose - 7 -.
Remove bolt - 4 - from battery hold-down bracket - 3 -.
Remove battery from battery console retaining strip.

Remove battery from luggage compartment.

CAUTION: When disposing batteries it is absolutely necessary that the disposal procedures for batteries and sulfuric acid are observed.

Installing

NOTE:

Only maintenance-free batteries conforming to standards "TL82506" (as of December 1997) and "VW75073" (as of August 2001) may be installed.
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 3: Identifying Battery Clamping Strip And Battery Holder Mount

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Insert battery in battery holder.

Battery clamping strip - 1 - must engage in battery holder mount - 2 -.
It should no longer be possible to move the battery.

Fig 4: Removing/Install Battery From Battery Console Retaining Strip

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Position battery hold-down bracket - 3 -.

Lug on battery retainer must engage in recess on battery base strip.

Hand tighten bolt - 4 -.

Reconnect battery in the following sequence with ignition and electrical equipment switched off:

First connect positive ( + ) terminal - 1 - to battery post and torque nut to specification.
Close positive terminal cover - 2 -.
Then connect negative ( - ) terminal - 6 - to battery post and torque nut to specification.
Connect hose for central gas venting system; see notes → Batteries with central gas venting .

Check firm attachment of battery following installation → Battery installation, checking .

The following steps are required after reconnecting battery:

NOTE:

When reconnecting battery, activate vehicle equipment (radio/radio navigation system, clock, electric window lifters) in accordance with Owners Manual.
Further measures after reconnecting the voltage supply refer to applicable engine repair information,
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- 24 - MULTIPORT FUEL INJECTION (MFI) for 2.0 LITER 4-CYL. 4V TURBO FUEL INJECTION IGNITION, ENGINE CODE(S): BPG, BWT
- 24 MULTIPORT FUEL INJECTION (MFI) for 3.0 LITER 6-CYL. 5V FUEL INJECTION & IGNITION, ENGINE CODE(S): AVK, BGN
- 24 - FUEL INJECTION SYSTEM for 3.2 V6 4V FUEL INJECTION IGNITION, ENGINE CODE(S): BKH
- 24 - MULTIPORT FUEL INJECTION (MFI) for 4.2 LITER V8 4V FUEL INJECTION AND IGNITION, ENGINE CODE(S): BNS
- 24 MULTIPORT FUEL INJECTION (MFI) for 4.2 LITER V8 5V FUEL INJECTION AND IGNITION, ENGINE CODE(S): BHF
.
Check proper function of remote control keys; adapt keys if necessary. Inform customer that all additional keys must also be adapted to ensure that the remote control works properly Owners Manual.
After re-connecting battery, the ESP indicator lamp will go out only after driving a distance of several meters.

Tightening torques

Component - fastener	Nm
Battery hold-down bracket - nut	12
Battery terminal to battery post - nut	7.5