Spark Plug: Service and Repair

12 12 011 Replacing all spark plugs (S65)

Special tools required:







Necessary preliminary work:
- Switch off ignition.
- Remove all ignition coils.

IMPORTANT:
Wear safety goggles.
Oil and dirt particles may get into your eyes.







Clean spark connector slot with compressed air.







Unscrew spark plugs with special tool 12 1 171 and an extension with a joint.

Installation note:
First, hand-tighten the spark plugs with special tool 12 1 171 and with an extension with a joint into the engine.
Then tighten the spark plugs using a torque wrench, special tool 12 1 171 and an extension with a joint.

Observe tightening torque.
Tightening torque 12 12 2AZ.