3.8 Renewing bulb for turn signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
3.9 Renewing headlight holders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
4 Gas discharge headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
4.1 Safety precautions when handling gas discharge bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . 147
4.2 Gas discharge headlight with cornering light/static cornering light - exploded view . . . . . . 147
4.3 Removing and installing headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
4.4 Adjusting headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
4.5 Preparations for headlight bulb replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
4.6 Renewing gas discharge bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
4.7 Removing and installing starter unit for gas discharge bulb - vehicles up to 08.2007 . . . . 159
4.8 Removing and installing starter unit for gas discharge bulb - vehicles from 09.2007
onwards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
4.9 Renewing bulb for main beam headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
4.10 Renewing bulb for daytime running light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
4.11 Renewing LED light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
4.12 Renewing bulb for static cornering light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
4.13 Renewing bulb for side lights - vehicles without static cornering light . . . . . . . . . . . . . . . . 166
4.14 Renewing bulb for side lights - vehicles with static cornering light . . . . . . . . . . . . . . . . . . . . 167
4.15 Removing and installing main and dip beam switch-over solenoid N347 / N348 . . . . . . . . 169
4.16 Removing and installing swivel module position sensor G474 / G475 . . . . . . . . . . . . . . . . 169
4.17 Renewing bulb for turn signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
4.18 Removing and installing dynamic cornering light control motor V318 / V319 . . . . . . . . . . 170
4.19 Removing and installing headlight range control motor V48 / V49 . . . . . . . . . . . . . . . . . . 170
4.20 Removing and installing gas discharge bulb control unit J343 / J344 . . . . . . . . . . . . . . . . 172
4.21 Removing and installing output module for headlight J667 / J668 . . . . . . . . . . . . . . . . . . 172
4.22 Renewing headlight holders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
4.23 Adapting headlights for driving on the left or right side of the road - vehicles with adjustment
lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
4.24 Adapting headlights for driving on the left or right side of the road - vehicles without adjustment
lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
5 Gas discharge headlights - USA vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
5.1 Safety precautions when handling gas discharge bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . 177
5.2 Gas discharge headlights - exploded view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
5.3 Removing and installing headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
5.4 Adjusting headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
5.5 Preparations before working on headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
5.6 Renewing gas discharge bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
5.7 Removing and installing starter unit for gas discharge bulb - vehicles up to 08.2007 . . . . 186
5.8 Removing and installing starter unit for gas discharge bulb - vehicles from 09.2007
onwards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
5.9 Renewing bulb for main beam headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
5.10 Renewing bulb for daytime running light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
5.11 Renewing LED light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
5.12 Renewing parking light bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
5.13 Removing and installing main and dip beam switch-over solenoid N347 / N348 . . . . . . . . 192
5.14 Removing and installing swivel module position sensor G474 / G475 . . . . . . . . . . . . . . . . 192
5.15 Renewing bulb for turn signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
5.16 Removing and installing dynamic cornering light control motor V318 / V319 . . . . . . . . . . 193
5.17 Removing and installing headlight range control motor V48 / V49 . . . . . . . . . . . . . . . . . . 193
5.18 Removing and installing gas discharge bulb control unit J343 / J344 . . . . . . . . . . . . . . . . 195
5.19 Removing and installing output module for headlight J667 / J668 . . . . . . . . . . . . . . . . . . 195
5.20 Renewing headlight holders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
6 Side marker light (USA vehicles) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
6.1 Removing and installing side marker light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
6.2 Renewing side marker light bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
7 Fog lights - vehicles up to 08.2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Audi A8 2003 ➤
Electrical system - Edition 08.2014
Contents iii