Problem with windshield washer switch

[Grozdanov]

The car is CLK W209. When I driving I can use this switch only 5 times. After that the windshield washer system don't work. When I turning ignition off and again turning ignition on or starting the engine, the windshield washer system works but again only 5 times.

 

[siraajb]

could be that the washer motor is seizing up. situated in front of the left wheel on the washer bottle (south african model).

couple taps on the motor with a plier should get it to start working again.