Volvo 2004 V70R Operation And Care Manual page 88

Front fog lights (option)
CAUTION:
Avoid touching the glass on the bulb with your fingers.
Switch off all lights and turn the ignition key to position 0.
Turn the bulb holder slightly counterclockwise to release it.
Replace the bulb. The shape of the base of the bulb corresponds to the shape of the bulb holder.
Reinstall the bulb holder by turning it slightly clockwise. "TOP" on the holder should be upward.
* R-models: H3
Side direction indicator
Open the front door halfway.
From the inside of the fender, push the lamp housing out.
Turn the bulb holder 1/4 turn counterclockwise and pull it out from the lens.
Remove the defective bulb by pulling it straight out.
Insert a new bulb.
Reinsert the bulb holder in the lens and press the entire unit back into place on the fender.
Door step courtesy lights
The door step courtesy lights are located under the dash on the driver's and passenger's sides.
To replace a bulb:
Carefully insert a screwdriver and pry out the lens.
Replace the defective bulb.