Attention: When applying a protective coating to the underbody, the oxygen sensor must be covered.
Withdrawal
Remove the engine cover over the injectors, see p. 10.
Raise the car.
Disconnect the plug connectors of the oxygen sensors, for which first release the clamps.
Release the wire holder.
Unscrew the oxygen sensors from the exhaust pipe. At the same time, simultaneously turn the wires together with the sensors by hand to avoid breaking or pulling them out.
Installation
Attention: Do not clean the oxygen sensor and do not allow it to come into contact with lubricants.
Treat the threads of the oxygen sensor only with Antiseize high temperature special grease.
Attention: If you screw in the oxygen sensor without high-temperature special grease, the thread will stick with time. As a result, the sensor no longer turns out. The new oxygen sensors are already pre-applied with high temperature specialty grease.
Screw the oxygen sensor into the exhaust pipe and tighten to 30 Nm.
Lay the electrical cable and connect the plug connector. Lay the wire so that it does not fray and does not touch the exhaust system.
Install the engine cover.