Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Energy management control unit - J644- must be re-encoded if
the battery is renewed ⇒ Vehicle diagnostic tester.
Tightening torques
Component Nm
Bolt to retainer plate 24
Battery clamp to battery terminal 6
2.5 Checking battery
⇒ Electrical system; General information; Rep. gr. 27 ; Checking
battery
2.6 Preparations before measuring no-load
voltage
Before measuring no-load voltage of battery, it is necessary to
perform the following steps:
– Remove cover for luggage compartment side trim (right-side)
-arrows-.
– Remove covers -1- and -2- above battery.
– Connect tester to remote positive terminal “+” and remote
negative terminal “–” ⇒ Electrical system; General information;
Rep. gr. 27 ; Checking battery .
2.7 Charging battery
The following descriptions are given in ⇒ Electrical system; Gen‐
eral information; Rep. gr. 27 ; Charging battery
2.8 Preparations before charging battery
Procedure
WARNING
Risk of explosion due to a discharged battery with “magic eye”.
♦ The battery must NOT be checked or charged if the indi‐
cator of the “magic eye” is colourless or yellow. Do NOT
jump start the vehicle. There is a risk of explosion when
checking or charging the battery or jump starting the ve‐
hicle. The battery must be renewed.
Audi A8 2003 ➤
Electrical system - Edition 08.2014
6 Rep. gr.27 - Starter, current supply, CCS
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