There was indeed a recall which affected the washer fluid pump. I believe it is the only safety recall on the W129. In certain circumstances the pump could keep on pumping and could catch fire after there was no fluid left. I have attached the recall notice. As my dealer in Switzerland had never heard of it, it may have applied only in the USA.

Momo

Attached Thumbnails

 

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1990 500SL 65k km - until May 11 2004
2004 E320 4-Matic wagon
2004 CLK500 Cabrio from May 11 2004