Removing the lambda oxygen sensor

NOTE: DANGER
High-voltage system.
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard through electric shock!

All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
For additional information see:
SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS .
For additional information see:
NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .

Preliminary work

Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE CYLINDER HEAD COVER ACOUSTIC COVER .

Lambda control sensor

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WARNING: Hot surfaces.
Risk of burning!

Perform all work only on components that have cooled down.

NOTE: RISK OF DAMAGE
Damage to wires when disconnecting connectors and plug connections.
Sheared wires can cause a short circuit.

Do not pull on wires when disconnecting connectors and plug connections.

NOTE: The cable of the Lambda oxygen sensor is black. The installation location of the Lambda oxygen sensor is in front of the catalytic converter.

Unlock connector (1) with screwdriver (2) and remove from the carrier plate.
Disconnect the connector (1).

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Detach the oxygen sensor cable (1) in the marked areas.

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Release and remove the control sensor (1) with the special tool 0 491 074 (11 7 020) .

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