1987 300e

[ke300e]

Hi all.
Last night my son was driving our 300e home and noticed a buzzing noise under the hood.At the same time the gauges stopped working.When using the turn signal the noise go`s away.
We poped the hood and located the noise coming from the multi funtion relay behind the fuse panel under a screwed down lid.
The relay unplugs and looks to be no problem to replace.Does this sound to you pro`s like the problem.The relay is the larger of the bunch approx 8 to 10 pins.

Any advice would be greatly appreciated.

[JCE]

When that happened on my 87 300E it was one of the fuses in the under hood (drivers side) fuse box. This is pretty common, I think # 3,5,or 9 may be the culprit, but I don't remember (try the search using fuse and buzz as key words - this is discussed a lot). It is probably a good idea to replace them all and clean the contacts with a pencil eraser. They corrode, and even though they may look fine, and may even test fine with a meter, they are prone to hairline cracks as they age and can do wierd things. Cheap place to start looking, anyway. Good luck!

[ke300e]

Thank you JCE !
You were right on . Its funny a simple fuse that looks ok to fall apart when removing it. Thank you again.
This has been a great car.
Your cars are beautys.