Volvo XC90 Owner's Manual page 211

09 Maintenance and service
Replacing bulbs
09
Front fog lamps
1. Switch off all lights and turn the ignition key
to position 0.
2. Turn the bulb holder slightly anticlockwise.
3. Remove the lamp.
4. Fit the new bulb. The profile of the bulb
holder matches the one on the foot of the
lamp.
5. Refit the bulb holder by turning slightly
clockwise. The TOP mark on the bulb
holder must be upward.
210
Bulbs in rear lamp cluster
Position lamps
Direction indicators
Reversing lamp
Position lamps
Brake light
NOTE
If the error message BULB FAILURE/
CHECK STOP LAMP remains after a faulty
bulb has been replaced then consult an
authorised Volvo workshop.