Audi Workshop Service and Repair Manuals

Removing and installing battery Removing   Caution On vehicles with telematics system, activate service mode of telematics control unit before disconnecting battery → Radio, telephone, navigation, self-diagnosis; Rep. Gr.01. –  Switch off ignition and remove ignition key. –  If applicable, remove the load compartment floor from the luggage compartment. –  Fold the luggage compartment floor covering forwards.

Vehicles without bracket for compact spare wheel: –  Remove cover from positive terminal. –  Connect the battery charger for battery back-up operation → Chapter. –  Disconnect earth lead -1- and positive lead -2- from battery. –  Pull off hose -3- for central gas venting. –  If necessary, swivel out the moulded element in front of the battery. –  Remove the bolts -arrows- at battery mount -4-.

Vehicles with bracket for compact spare wheel: –  Remove the compact spare wheel. –  Swivel out the moulded element in front of the battery -arrows-.

–  Remove the bolts -arrows- at compact spare wheel / battery mount bracket -4-. –  Remove the compact spare wheel / battery mount bracket. –  Remove cover from positive terminal. –  Connect the battery charger for battery back-up operation → Chapter. –  Disconnect earth lead -3- and positive lead -2- from battery. –  Disconnect central gas venting system hose -1-. All models: –  Lift battery out of luggage compartment.   WARNING Observe environmental requirements. When disposing of used batteries, always observe the required disposal procedures for batteries and sulphuric acid → Electrical system; General information; Rep. Gr.27. Installing Install in reverse order, paying attention to the following:   Note t  Only maintenance-free batteries complying with standards “TL82506” (as of December 1997) and “VW75073” (as of August 2001) are to be fitted. t  Batteries from the Audi parts range feature a base strip adapter for matching to different fastening strips. When and how the base strip adapter is to be used is described in the battery operating instructions.

–  Insert the battery in the battery recess such that the battery base strip engages beneath the locating elements -1-.   Note In order to ensure secure seating of the battery, only batteries with 10.5 mm mounting strips must be installed.

Vehicles without bracket for compact spare wheel: –  Insert the battery mount -1- such that the two lugs -arrows- engage in the recesses of the battery base strip.

–  Tighten the bolts -arrows- at the battery mount -4-. Connect up battery in the following sequence with ignition and electrical consumers switched off: –  Start by connecting pole shoe -2- of positive lead by hand to battery positive terminal “+” and tighten nut. –  Connect pole shoe -1- of earth lead by hand to battery negative terminal “-” and tighten nut. –  Connect hose -3- for central gas venting system. Observe notes in → Electrical system; General information; Rep. Gr.27.

Vehicles with bracket for compact spare wheel: Connect up battery in the following sequence with ignition and electrical consumers switched off: –  Start by connecting pole shoe -2- of positive lead by hand to battery positive terminal “+” and tighten nut. –  Connect pole shoe -3- of earth lead by hand to battery negative terminal “-” and tighten nut. –  Connect hose -1- for central gas venting system. Observe notes in → Electrical system; General information; Rep. Gr.27. –  Insert compact spare wheel / battery mount bracket and tighten the bolts -arrows- at compact spare wheel / battery mount bracket -4-. All models: –  After installation, check that battery is securely attached → Electrical system; General information; Rep. Gr.27. –  Terminate battery back-up operation on the battery charger. If the battery has been removed and installed without battery back-up operation, the following action must be taken after connecting the battery: t  Activate vehicle equipment (radio/radio navigation system, clock, electric window lifters) in line with owner's manual. t  Deactivate service mode of telematics control unit → Radio, telephone, navigation, self-diagnosis; Rep. Gr.01. t  Check operation of remote control and synchronise remote control keys if necessary. Customers should be informed that second and additional keys are also to be synchronised so as to ensure proper operation of remote control function → Owner's manual. t  Interrogate fault memories of all control units and erase “Undervoltage” fault if necessary → Vehicle diagnosis, testing and information system VAS 5051.   Note t  After re-connecting the power supply, the ABS/ESP warning lamp does not go out until the vehicle has been driven a few metres. t  Following installation, do not forget to insert moulded element in front of battery. Tightening torques

Component	Nm
Battery mount to luggage compartment pan	10
Compact spare wheel / battery mount bracket to luggage compartment pan	10
Battery terminal to battery post	6