![]() Replace the fuse designated to protect the left and right turn signal fuses.Check the price on the Mercedes-Benz turn signal switch (eBay link)ģ – Turn Signals and Emergency Hazard Flasher Inoperable.Once you have the part number for your turn signal switch, check the following listings to find a replacement turn signal switch for your Mercedes-Benz. To find the part number for your existing switch, call your Mercedes-Benz dealer parts department, provide them the VIN of your Mercedes-Benz, and they will identify the compatible part numbers. Ensure the new or used switch you install has the same part number as the existing one. You can replace it with a used turn signal switch no programming is required. Therefore, the whole turn signal switch needs to be replaced.Ĭlick here to check prices on new & used Mercedes turn signal switches (eBay link). Look at the part inside the turn signal/combination switch that often fails. Remember to disconnect the negative battery terminal. You will need to remove the steering wheel to replace the combination switch. That’s because the turn signal switch and wiper switch are combined. You may also notice that the wiper switch is not working either. The turn signal switch is part of the combination switch found in the steering column and is mounted right behind the steering wheel. In most cases, these turn signal problems are due to a faulty turn signal switch. You can manually hold the turn signal switch pressed to keep the turn signal flashing. The turn signal switch doesn’t engage to keep the left or right turn signal on. When you press the switch to turn left (or right), none of the turn signals on one side work. Turn signals on one side (left or right) of the car are not working.2- Left or Right Turn signals not working Mercedes (left or right) turn signal constantly ONĪ defective SAM module can cause one turn signal to stay on all the time while the rest operate properly. It is not common for both of these SAM units to fail simultaneously. Right front SAM (N10/7) powers right front lights.Left front SAM (N10/6) powers left front lights.Mercedes-Benz cars have two or more SAM units. ![]() Read codes with the YOUCANIC full system scanner if you are a Mercedes owner trying to troubleshoot the problem yourself. ![]() Here is a good article on how to perform this test on a Mercedes-Benz.ĭiagnose the SAM module and replace it if necessary. If you don’t get any power, check the continuity between the turn signal and the SAM module. You should get between 11 and 14 volts if you don’t get any power check continuity between the turn signal and the SAM module.
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