Mercedes-Benz 2004 C-Class Coupe Operator's Manual page 299

1 Stop lamp
2 Back up lamp
3 Turn signal lamp
4 Tail, parking, standing and rear fog
lamp (driver's side)
License plate lamp
1 Screws
Switch off the lights.
Loosen both screws 1 and remove
lamp.
Replace the tubular lamp and reinstall
lamp.
Retighten the screws.
Practical hints
Replacing bulbs
299