Audi 2003 A8 - Removing and Installing Gas Discharge Bulb Control Unit J343; J344; Removing and Installing Output Module for Headlight J667; J668

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5.18 Removing and installing gas discharge
bulb control unit -J343- / -J344-
Removing
WARNING
High voltage! Danger to life!
♦ Ensure that any part of the gas discharge headlights
marked with yellow high-voltage warning symbols are de-
energised when you are working on them.
♦ Switch off ignition and all electrical equipment and remove
ignition key.
♦ Do not flash the headlights.
– Turn light switch to position “0”.
– Switch off ignition and all electrical equipment and remove ig‐
nition key.
– Do not flash the headlights.
– Remove headlight ⇒ page 179 .
– Unscrew bolts -arrows- and detach control unit from headlight
housing.
– Unplug electrical connector.
Installing
Installation is carried out in the reverse order; note the following:
– Check seal between gas discharge bulb control unit and head‐
light housing.
– Install headlight ⇒ page 179 .
Tightening torque
Component Nm
Control unit to headlight 1
5.19 Removing and installing output module
for headlight -J667- / -J668-
Removing
WARNING
High voltage! Danger to life!
♦ Ensure that any part of the gas discharge headlights
marked with yellow high-voltage warning symbols are de-
energised when you are working on them.
♦ Switch off ignition and all electrical equipment and remove
ignition key.
♦ Do not flash the headlights.
– Turn light switch to position “0”.
– Switch off ignition and all electrical equipment and remove ig‐
nition key.
Audi A8 2003 ➤
Electrical system - Edition 08.2014
5. Gas discharge headlights - USA vehicles 195