Checking the operation and replacing the clutch switch (where provided) (BMW 5 Series E28)

The clutch switch, located at the top of the clutch pedal, prevents the engine from starting unless the pedal is depressed. The switch, which is part of the starter circuit, is normally open. When the clutch pedal is depressed, it pushes a small plunger in the switch, completing the circuit and engaging the starter.

If the car engine starts without pressing the clutch pedal, it means that the switch is either faulty or incorrectly adjusted. To check its operation, disconnect the electrical connector and connect an ohmmeter to the connector terminals. The circuit should not be closed when the pedal is released (pedal up) and is closed when the pedal is depressed. If the switch does not work this way, try adjusting it. If this does not work, replace it.

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