Set your multimeter to measure DC Voltage. You will need to use a digital multimeter such as the Mastech Series Digital AC/DC Auto/Manual Range Digital Multimeter. Step 2: If the fuse is ok, you should next check the power to the windshield wiper motor. Replacing the fuse may be all you need to do to fix the wiper problem on your Mercedes-Benz. It is common for the fuse to burn out if you press the window switch to activate the wipers, but the wipers have frozen, or there is snow on the windshield. Fuses are inexpensive, and it may be wise to purchase a box of 100+ assorted fuses, which you can find on Amazon. If the fuse has burned out, replace it with a new one with the same ampere rating. Once you remove the fuse, a good one should look like the one in the picture above. ![]() Find your car’s fuse chart and the corresponding fuse for the windshield wiper motor. They are on the side of the dashboard, engine bay, rear seat, or trunk. Your Mercedes-Benz has three to four fuse boxes. ![]() This is an easy procedure, and you should be able to perform this task at home. Guide: Mercedes Windshield Wipers stopped workingĭid your Mercedes windshield wiper blades stop moving? If the windshield wiper blades on your Mercedes-Benz have stopped working, follow these steps to troubleshoot this problem. For example, your lights will no longer turn on automatically when you enter a tunnel. This may disable other features in your car. It will work like the old-school wipers used to. Therefore if you set the wipers in one setting, they will stay at a constant speed. The automatic wiper function will not work. Your wipers will work at a constant speed when turned on. You could temporarily unplug the electrical wire from the rain sensor. It is also possible that your wipers may need to be calibrated using Star Diagnostic Scanner. Usually, there are no screws for the cover it simply snaps on top of the sensor. It has a plastic cover that will pop out. The rain sensor is located behind the rearview mirror. This will fix the problem when the wiper operation is so erratic that you can hardly use them. The solution to this problem would be to replace the rain sensor. If this sensor is defective, the wipers may move too fast or slow for no reason. This problem is common and is typically caused by defective Light and Rain Sensors for Automatic Headlights and Windshield Wipers. V- Mercedes Windshield Wipers work erratically. Here is a helpful tutorial on lubricating the windshield wiper mechanism on a Mercedes-Benz. Remove the cover from the wiper arm and use a lithium grease such as Liquid Wrench White Lithium Grease. You should lubricate the wiper mechanism at the center (bottom) of the windscreen. a slow wiper movement as the wiper moves on the windshield. This is a common problem with the mono wipers (single wiper arm) found on Mercedes-Benz E, C, and CLK class (W202, W210, W208). IV- Wiper hesitates to move or moves very slowly It will not allow the wipers to operate if the hood is open. Now the windshield wiper will no longer work. III- Installed new wipers, and the wipers stopped working. In very few cases, this trick could solve your wiper problem. You could also try disconnecting the battery and reconnecting it. A scanner that can read Front SAM Control Unit fault codes is the YOUCANIC full system scanner. You would need a scanner to read all control units on your MB. You must connect your Mercedes-Benz to a diagnostic scanner and read the fault codes. ![]() There may be a problem with the controller area network or the front signal acquisition module (SAM). II- The turn Signal, Horn, and Wipers all have stopped working Next, try tightening the bolt that holds the wiper arm in place.
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