Mercedes wiper washer problems

Mercedes ? Wipers are or are not working ?

IF you've checked voltage and found no power going the wiper system, then I would back trace the power line. Logic would dictate that if the fuses were good, and you have no power to the wiper system then there is either a relay in line that's bad or you have a broken wire in the circuit.

Check for current at the wiper switch.

most likely a bad switch, the turn signal lever/stalk is the switch for all three functions, wiper, wash, turn signal.

Here are some more common problems.

• Motor:

The wiper motor is commonly replaced and was often not the problem. Don't replace the motor yet. maybe it's not the motor. It could be a fuse or something at the wiper switch. The wiper motor has two windings, fast and slow. The wiper switch sends a ground signal to each motor winding. More often, there are problems with the relay, or at the wiper switch, or in the cable to the motor.

• Windshield Washer:

Don't be too quick to replace the washer pump. The problem is often just a clog in the sprayer heads. You can clean out the sprayer holes with a needle, some have two holes, so look closely. Hope this helps.

Short answer is yes, although there is a possibility that this is just a coincidence.
it seems that they have incorrectly connected the switchgear after replacing your wiper motor. You should return to the same dealer that did the repair and get them to sort it, this should not be charged as they are responsible for the issue.

this sounds like a bad wipermotor or switch. use a test light and turn wipers on try all speeds and check for power at the motor and also check for a good ground at motor, if theres power and ground at the wipermotor then motor is bad. if theres no power or a ground at motor then its a switch or bad wire to wiper motor, start with these tests this will help you pin point the problem.

wipers and washers have stop,d working on my 53 plate c180.......... any ideas please???????

When you pull the lever to activate the windshield washers, do you hear any type of sound coming from under the hood?  A whirring sound should be heard from the little electric pump that feds the washers.
If you can hear the whir, then you should look for a possible clog in the washer hoses (there is more than one...).
If you cannot hear the whirr, then you should check the fuse that protects the windshield washer circuit.  Check your owner's manual for the location and correct amperage for this circuit.
Good luck!

This could be anything in between. Heres where I would start. DOES the vehicle spray water in any other speed? Do all speeds work?
If all speeds work fine the problem could be in the SENSOR controlling the actual Spray pump. NOT worth fixing. OR your wires going to the spray pump could be cut! Check the resistance real quick between the pump and the sensor. It also may be the culprit.