Ignition System: Service and Repair

Ignition System Overview






1 Knock Sensor 1 (G61)

• Contacts gold plated

• To remove, the coolant distribution housing must be removed

• Removing and installing, refer to => [ Knock Sensor 1 (G61) ] Service and Repair

2 Knock Sensor 2 (G66)

• Not installed on all vehicles

• Contacts gold plated

3 Ignition Coil with Power Output Stage ((N70, N127, N291, N292))

• Removing and installing, refer to => [ Ignition Coils with Power Output Stages ] Service and Repair

• To remove, use the ignition coil puller (T40039)

4 Spark Plug

• 30 Nm

• To remove, use the spark plug removal tool (3122 B)

5 Bolt

• 20 Nm

• Replace

• Tightening specifications affect the function of the knock sensor

6 Bolt

• 10 Nm

7 Camshaft Position (CMP) Sensor (G40)

• Contacts gold plated

8 O-ring

• If damaged, replace O-ring