I have a 1990 240DL wagaon.
I had a brake light go out last week, bought a new bulb...no biggie.
Next day the bulb warning light on the dash went on again....this time its weird.
If I brake, all 3 brake lights go on as they should - but so does warning light on dash.
But if I turn the headlights on, the warning light comes on....and the high mounted brake light is on, whether I'm braking or not.
I have tied wiggling sockets, replacing other two bulbs.....I removed and reseated the fuse and the problem went away for about 10 minutes, then came back.
Any tips what to look for?
Stu