Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Clutch Pedal Switch (Manual Transmissions Only)
The function of the clutch pedal switch is to provide the engine control module (ECM) with information about whether the clutch pedal is depressed sufficiently or not. The clutch pedal switch is directly connected to the engine control module (ECM).
Because the communication on the HS-CAN can temporarily fail during the starting sequence two information sources are used for the clutch pedal position. This is to prevent interference during starts. The engine control module (ECM) also receives information about the clutch pedal position via the central electronic module (CEM). See also DESIGN AND FUNCTION, CENTRAL ELECTRONIC MODULE (CEM) .
The clutch pedal switch is in its original position (clutch pedal not depressed) open and powered from the (terminal 30). When the clutch pedal is depressed more than 75%, the switch closes and a high signal (12 V) is transmitted to the engine control module (ECM).
The clutch pedal contact must function faultlessly for the Automatic start/stop of engine function to work.
The clutch pedal switch is on the pedal box by the clutch pedal.
For further information about the function of the clutch pedal contact, see DESIGN AND FUNCTION, AUTOMATIC START/STOP OF ENGINE .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.