If your throttle body is defective, you may be unable to repair it. Or you can replace the throttle position sensor yourself to save money.Ĭheck Price: Mercedes Throttle Position Sensor Mercedes-Benz dealerships would be happy to help you or any Indepdement mechanic. Your options are to replace it with a new throttle position sensor. In most cases, you will get code P0120 or P012x. If you determine the throttle position sensor has failed on your Mercedes-Benz, you must address this problem immediately. Watch this very informative video on the function of the throttle position sensor. For this, you will need an advanced Mercedes scanner. If not, you must diagnose the throttle position sensor and throttle body. Don’t worry you can’t cause any damage with this reset. It also resets the transmission shift points to factory settings. This allows resetting the High and Low points of the gas pedal. Wait a minute before you restart your Mercedes. Turn the ignition off but do not remove the key.Press and hold the gas pedal for at least five seconds.Defective Throttle Position Sensor (TPS).A faulty gas pedal (also known as a travel sensor, gas accelerator, or pedal position sensor) may develop similar symptoms as a bad throttle position sensor. Mercedes-Benz utilizes a drive-by-wire system. Replacing takes less than 10 min and requires no special tools other than a 10mm socket and a screwdriver. On models such as E-Class W210 and W208, the Throttle Position Sensor is mounted near the front left strut, on the front of the brake fluid reservoir. Mercedes Throttle Position SensorĪnother weak point is the throttle position sensor. Check out these companies that offer Mercedes throttle body repair services (eBay link). Mercedes throttle bodies made by Bosch and VDO may fail. Here is a close-up picture of a Mercedes throttle body. The throttle body is where the throttle valve is mounted and controls the amount of air that enters the combustion chamber when the throttle body malfunctions, the wrong amount of air enters the engine causing problems with the air/fuel mixture ratio. In most cases, the issue is caused by either a defective pedal position sensor or a bad throttle position sensor. Turning off the engine and restarting it usually fix the problem. If you press the gas pedal to the floor or try to accelerate quickly or floor it, the engine stops responding, RPMs drop, and it may even go into limp mode. Symptoms of defective Mercedes throttle body or throttle position sensor include:Ī common problem that you may notice is that the car drives fine under normal acceleration. Mercedes-Benz throttle body or throttle position sensor found on C-Class, E-Class, S-Class, CLK-Class, and SLK-Class may fail to cause idle issues, no idle, or poor acceleration.
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