Hi,

I need to replace the windscreen wiper switch on my 1984 300D (w123d). I know where the wiper motor is but where is the switch?

Many thanks,

David.

If you are going to replace the switch without knowing its location, how did you properly diagnose it? What switch? the one behind the steering wheel?

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope :)
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

Dear Benzmac,

Thanks for replying.

The motor seems to be in full strength so I (perhap mistakenly) discounted that possibility.

The problem: the wipers stop mid sweep for around intervals of various length (on any of the three speed settings and even on the squirter setting)and then continue.

I've just acquired a wiring diagram which refers to the combination switch housing (located behind steering wheel) the "washer switch" and the "wiper speed switch". Since the wipers stop in this manner when on either any of the three speeds or when the squirter setting is operating, this implies the problem resides with something common to each of the two switches.

In short: do you think it could be the motor afterall (even if it seems powerful)? Open to suggestions!

Many thanks,

David

Yes, the motor will cure the problem. (Been there and done that.)

------------------
Benzmac:
Donnie Drummonds
1992 500E (very soon I hope :)
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM