Mercedes-Benz Light Truck ML 320 Operator's Manual page 116

Taillamp Assemblies
1 Stop lamp (P 21 W bulb)
2 Backup lamp (P 21 W bulb)
3 Turn signal lamp (P Y 21 W bulb)
4 Tail, parking, standing and side
marker lamp, driver's side rear
fog taillamp: (P 21/4 W bulb)
Open liftgate.
Remove nuts (1).
Remove taillamp..
Pull off electrical connector (2).
Squeeze tabs (3) together and remove
bulb holder.
Push bulb into socket, turn
counterclockwise and remove.
Insert new bulb in socket, push in and
twist clockwise.
Reinstall bulb holder.
Reinstall electrical connector (2).
Reinstall taillamp.
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