Mercedes-Benz C-Sedan 2012 Owners Manual - Manual (Page 116)

Never use a bulb which has been dropped.
Such a bulb may break or even explode and
injure you.
Halogen bulbs are pressurized and can
explode when you change them, particularly
if they are very hot. You should therefore wear
eye protection and gloves when you are
changing them.
Overview: changing bulbs/bulb types
You can change the following bulbs. The bulb
type can be found in the legend.
Halogen headlamps
:
Parking lamp/standing lamp: W 5 W
; High-beam headlamp: H7 55 W
= Low-beam headlamp: H7 55 W
Bi-Xenon headlamps
:
Cornering lamp: H7 55 W
Tail lamp
:
Backup lamp: P 21 W
;
Brake lamp: P 21 W
= Brake lamp/tail lamp: P 21 W
Changing the front bulbs
Low-beam headlamps (halogen
headlamps)
X Switch off the lights.
X Open the hood.
X Turn housing cover : counter-clockwise
and pull it out.
X Turn bulb holder ; counter-clockwise and
pull it out.
X Take the bulb out of bulb holder ;.
X Insert the new bulb into bulb holder ;.
X Insert bulb holder ; into the lamp and turn
it clockwise.
X Align housing cover : and turn it
clockwise until it engages.
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Replacing bulbs
Lights and windshield wipers