– Secure battery retainer plate with bolt -1-.
Note
Lug on battery retainer plate 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 -4- of positive cable by hand to
positive battery terminal “+” and tighten nut.
– Attach battery clamp -2- on earth cable to negative battery
terminal “–” by hand and tighten nut.
– Attach hose -3- for central gas venting system.
– Check that battery is firmly secured following installation.
– Switch off back-up power supply from battery charger.
– If the battery is renewed, the new battery must be adapted
⇒ Vehicle diagnostic tester.
Procedure
⇒ Vehicle diagnostic tester is connected.
– Select Diagnosis mode and start diagnosis.
– Select Test plan tab.
– Select Own test then the following options one after the oth‐
er:
♦ Body
♦ Electrical system
♦ 27 - Starter, current supply
♦ Electrical components
♦ A - Adapt battery after replacing
Further instructions are given by ⇒ Vehicle diagnostic tester.
If battery was removed and installed without back-up power sup‐
ply, perform following procedures after connecting the battery:
♦ Deactivate service mode for telematics control unit in “Guided
fault-finding”.
♦ Activate automatic open/close function of electric window reg‐
ulators - see ⇒ Owner's Manual .
♦ Turn the ignition key in ignition lock once to the left as far as
the stop.
♦ Synchronise spare keys and additional keys to ensure correct
remote control operation.
♦ Interrogate event memories of all control units and erase “Low
voltage” event if displayed ⇒ Vehicle diagnostic tester.
Note
After reconnecting the voltage supply, it is possible that the ESP
warning lamp will not go out until the vehicle has been driven
several metres.
Audi A8 2003 ➤
Electrical system - Edition 08.2014
2. Battery 5
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