Audi Workshop Service and Repair Manuals

Removing and installing battery in engine compartment Removing   Note If you are not using a battery charger with back-up function when removing and installing the battery, follow the steps required when disconnecting the battery → Chapter „Disconnecting and connecting battery in engine compartment“. –  Switch off ignition and all electrical equipment; then take out ignition key.

–  Detach rubber seal of plenum chamber cover in direction of -arrow-. –  Remove plenum chamber cover -1- to front. –  Connect battery charger to provide back-up power supply → Chapter.

–  Loosen nut several turns and disconnect battery clamp -1- of earth cable from battery terminal post. –  Loosen nut several turns and disconnect battery clamp -2- of positive cable from battery terminal post. –  Unscrew hexagon socket head bolt -4- on battery retainer -3-.   Note t  On vehicles with body brace, use hexagon key with ball head to unscrew hexagon socket head bolt -4-. t  Unscrew hexagon socket head bolt only until the ball head of hexagon key touches body brace. t  Leave hexagon socket head bolt and retainer fitted and swivel out battery from underneath.

–  Disconnect angled connector of central gas venting system -arrow-. –  Lift battery out of plenum chamber.   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 Installation is carried out in the reverse order; note 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 retainer flanges. The battery operating instructions give details of when and how to use the base strip adapter.

–  Insert battery in battery carrier so that lug at rear of battery carrier -arrow- engages in recess in battery base strip -1-. l  It should no longer be possible to move the battery.

–  The battery has been properly inserted if the centre recess in the battery base strip aligns with the tapped hole in the battery tray -arrows-.

–  Secure battery retainer -3- with hexagon socket head bolt -4-. l  Lug on battery retainer must engage in recess on battery base strip. Connect up battery in the following sequence with ignition and electrical equipment switched off: –  First connect battery clamp -2- of positive cable by hand to battery positive terminal “+” and tighten nut. –  Attach battery clamp -1- on earth cable to negative battery terminal “–” by hand and tighten nut. –  Connect hose for central gas venting system. Observe notes in → Electrical system; General information; Rep. Gr.27. –  After installation, check that battery is securely attached → Electrical system; General information; Rep. Gr.27.   Note If you are not using a battery charger with back-up function when removing and installing the battery, follow the steps required when connecting the battery → Chapter „Disconnecting and connecting battery in engine compartment“. Tightening torques

Component	Nm
Bolt at battery mount	12
Battery terminal to battery post	7.5