Battery, Removing And Installing

Special tools and workshop equipment required

Pry Lever 80-200

CAUTION:

TDI (SCR) vehicles

After the ignition is switched off, the reducing agent goes from the metering line to the Reducing Agent Injector -N474- and back into the reducing agent active chamber.
Wait until all the reducing agent has been returned before working in this area. This could take up to 10 minutes after switching off the ignition.
Only after this is complete can the battery be disconnected. Again, this could take up to 10 minutes after switching off the ignition.

Removal

-- Position driver's seat as far back as possible. use the entire seat adjustment range to do this.

-- Turn off the ignition and remove the key.

-- Remove screw -2- and pull footwell vent -1- up.

Fig 1: Floor Vent And Screw

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-- Remove the cover on the rear seat rail, refer to Seat Frames .

-- Open the rear clips -1- -arrow-.

Fig 2: Cover -2-, Clips -1-

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NOTE:

Use a screwdriver is necessary to remove the clips.

-- Release retaining clamps on back side of cover -1- in direction of -arrow A-.

NOTE:

The seat is not shown in the illustration.

-- Then remove cover in -direction of arrow B- from driver's seat console.

Fig 3: Release Retaining Clamps On Back Side Of Cover -1- In -Direction Of Arrow A-.

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-- Pry the covers -1- and -3- out of floor covering using the Pry Lever 80-200.

Fig 4: Prying Covers -1- And -3- Out Of Floor Covering

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-- Remove both front screws -4- on driver's seat console and tip console -2- up.

-- Free up the wiring harness for the driver seat.

NOTE:

The seat is not shown in the illustration.

-- Move the backrest and the seat surface forward with the driver seat folded.

Fig 5: Cover -2-, Clips -1-

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-- Remove cover -2- over battery by releasing retaining clamps -1- in direction of -arrow-.

NOTE:

Use a screwdriver is necessary to remove the clips.

-- Connect the battery charger for battery assistance mode, refer to BATTERY, PREPARING FOR SUPPORT MODE .

Fig 6: Identifying Battery Terminals, Cables, Bracket, Clamps And Screw

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-- Disconnect ground cable -2- and positive cable -3- at battery.

-- Disconnect central gas venting system tube -1-.

-- Remove threaded pins -4- with battery bracket.

-- Remove screw -5- and remove upper battery bracket -6-.

-- Raise battery out of battery mount.

WARNING:

Pollution risk.

Battery and sulfuric acid disposal regulations must be followed when disposing of batteries WARNINGS AND SAFETY PRECAUTIONS Generator, Checking Generator, Checking and Servicing Generator, Removing and Installing .

Installation

Install in reverse order of removal. Note the following:

NOTE:

To ensure optimal performance of the Energy Management Control Module -J644- use the battery specified in the Parts Catalog.

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.

-- Insert battery in battery mount so that base strip engages in battery mount retaining strips -arrows-.

Fig 7: Identifying Battery Mount Retaining Strips -Arrows-

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It should no longer be possible to move the battery.

-- Secure upper battery bracket -6- with screw -5-.

Fig 8: Identifying Battery Terminals, Cables, Bracket, Clamps And Screw

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-- Insert battery bracket and tighten threaded pins -4-.

With ignition switched off and electrical consumers switched off, connect battery in the following sequence:

-- Connect positive cable terminal clamp -3- by hand to battery positive terminal "+" and tighten nut.

NOTE:

If the connector on the Battery Monitoring Control Module -J367- comes loosen when connecting the battery, wait 30 seconds before connecting it again.

-- To connect, connect terminal clamp of Ground (GND) wire by hand to battery negative terminal "-" and tighten nut.

-- Connect central venting system hose while observing notes, refer to Generator Generator, Checking Generator, Checking and Servicing Generator, Removing and Installing .

-- Check battery after installation for secure seating, refer to BATTERY, CHECKING Generator, Checking Generator, Checking and Servicing Generator, Removing and Installing .

-- Stop battery assistance mode at battery charger.

If the battery was replaced, then the control module must be adapted either in "Guided Fault Finding" or in "Guided Functions" using the Vehicle Diagnostic Tester.

-- Install the bracket for the driver seat Seat Frames .

If the battery was not removed and installed in assistance mode, the following steps must be performed after reconnecting the battery:

Activate the power window regulator one-touch up/down function, refer to the Owner's Manual.
Synchronize the spare and additional keys to ensure remote control operation. To do so, insert key into ignition lock, switch the ignition on and off again and remove key.
Check all the DTC memories and erase the "undervoltage" entry Vehicle Diagnostic Tester.

NOTE:

After connecting the power supply, the ABS warning lamp may only go out after the vehicle has been driven a few yards.

Tightening Specifications

Component	Nm
Threaded pins with battery bracket to battery mount	20
Upper battery bracket to battery mount	9
Battery terminal to battery pole	6
Footwell vent to battery cover	2