Mercedes-Benz Forum banner

1 - 8 of 8 Posts

·
Registered
1989 Mercedes 300E, 106500 original miles
Joined
·
136 Posts
Discussion Starter #1
Ok, as I am typing this I have added Chevron Techron into my car today. Also, I have my "check lights sign" on. I got the proper bulbs for my car, but the brake light WON'T light up on the left-side. If I bought a new turn signal set up would that possibly fix that brake light problem? I plan on replacing those anyways, so that's not a big of a deal.
 

·
Registered
2013 E350 sedan, 2013 E350 cab, 1993 400E sold,1999 ML320
Joined
·
2,436 Posts
Ouch I had the same issue. Did it just start or develop? If its a new issue it may be the bulb being wrong or the wrong voltage. Did you try the bulb from the opposite side? I found myself that the relay is under the screw down cover just aft of the fuse box. It controls all the lights and shows bulbs out. It costs 200 hundred new I got mine at the bone yard. Its the longest relay in there. If it is a existing problem you just found look for splicing in the wires back in the trunk because the previous owner rewired it cause the relay went bad and he rigged it not to show when I bought it.

Good Luck
 

·
Registered
1989 Mercedes 300E, 106500 original miles
Joined
·
136 Posts
Discussion Starter #3
Ouch I had the same issue. Did it just start or develop? If its a new issue it may be the bulb being wrong or the wrong voltage. Did you try the bulb from the opposite side? I found myself that the relay is under the screw down cover just aft of the fuse box. It controls all the lights and shows bulbs out. It costs 200 hundred new I got mine at the bone yard. Its the longest relay in there. If it is a existing problem you just found look for splicing in the wires back in the trunk because the previous owner rewired it cause the relay went bad and he rigged it not to show when I bought it.

Good Luck

No, it's been like that. When I first got it, I thought the sign meant the headlights were on. I will try the lightbulb thing, if it doesn't work bah!
 

·
Registered
1993 500E
Joined
·
22 Posts
Ouch I had the same issue. Did it just start or develop? If its a new issue it may be the bulb being wrong or the wrong voltage. Did you try the bulb from the opposite side? I found myself that the relay is under the screw down cover just aft of the fuse box. It controls all the lights and shows bulbs out. It costs 200 hundred new I got mine at the bone yard. Its the longest relay in there. If it is a existing problem you just found look for splicing in the wires back in the trunk because the previous owner rewired it cause the relay went bad and he rigged it not to show when I bought it.

Good Luck
I had the same issue with an intermittent on/off of a rear light. I removed the
above mentioned relay (just a few screws), cleaned the contacts with electrical
contact cleaner, and reinstalled. No issues since. It's a ten minute job, well worth
a try.

hth,
a'
 

·
Registered
2013 E350 sedan, 2013 E350 cab, 1993 400E sold,1999 ML320
Joined
·
2,436 Posts
ok wait a minute then check all your bulbs first normally one of the 2 license plates light bulbs are out. If its always on when headlights on its a bulb that goes along with parking lights and headlights. Look for bulbs that are out first. Thanks for the added info. That is the bulb out indicator.
 

·
Registered
1989 Mercedes 300E, 106500 original miles
Joined
·
136 Posts
Discussion Starter #7
I had the same issue with an intermittent on/off of a rear light. I removed the
above mentioned relay (just a few screws), cleaned the contacts with electrical
contact cleaner, and reinstalled. No issues since. It's a ten minute job, well worth
a try.

hth,
a'
I will try that, thank you!
 

·
Registered
1989 Mercedes 300E, 106500 original miles
Joined
·
136 Posts
Discussion Starter #8
ok wait a minute then check all your bulbs first normally one of the 2 license plates light bulbs are out. If its always on when headlights on its a bulb that goes along with parking lights and headlights. Look for bulbs that are out first. Thanks for the added info. That is the bulb out indicator.
I will try that too thank you!
 
1 - 8 of 8 Posts
Top