Mercedes-Benz E350 tail light bulb lamp replacement procedure: Purchase the correct replacement tail light bulb(s) first, before disassembling the vehicle. See sources and related links below for replacement bulb information and full light bulb part numbers list. Then consult your owner's manual for the tail light bulb lamp replacement procedure. As simple as it sounds, the owner's manual is the best place to start for bulb replacement instructions and illustrations. You may want to consider replacing both left and right at the same time in order to keep brightness and color equal (optional).
the housing and lens are one piece just remove side trunk paneling and there should be 3 or 4 8mm nuts to remove then pull out the tail lamp
that is usually same fuse as tail lights
You replace 1998 e-320 fog light builds by removing the protective cap and then unscrewing and screwing them back.
Left rear tail light red wire
e bay
AnswerI have a 79 E-350 that had same problem ... it ended up being the high/low beam selector ... cheap and easy to replace. Fixed my problem
Remove the fuel tank to access the fuel pump assembly.
Probably need to replace the brake cyclinders if the master cylinder is ok.
remove sump pan on gearbox replace with new one and replace gasket at same time then refill with correct oil.
buy the manuel or ask a good knowledgeable friend or shop
E-350
The relay is in the power distribution box in the engine compartment on the driver side. There are two white relay next to each other one is trailer tail lights the other is trailer back up lights. The tail light relay is the one closest to the firewall.