Need help finding,I suspect electrical short, as soon as you turn ignition on wiper starts,I had to pull fuse to stop it. I played with controls and washer controls,no luck ,

(92) 300TE 4M, 111K

Good chance you have a short in the park switch internal to the motor, but you might want to unplug the combination relay, which runs the interval wipe function. I suppose the wiper switch also could be bad.

Time for a wiring diagram.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician

I had this problem happen to me on a 123. Wiper would run when lights are turned on. Turned out to be a ground sneak from the headlight grounding point activating the wiper relay. Notice anything peculiar with other electrics?

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1992 124 E200 (Euro)

Oreo, other electrics you ask! , now the rear wiper is running all the time as well.

What gives?

(92) 300TE 4Matic,111K,