18 32 030

Read out fault memory, clear if necessary.
Switch off ignition.

Unscrew bolt (1).
Unscrew nut (2).
Remove cover (3).

Unclip plugs (1) from retainer.
Disconnect plug connections of positive leads for E catalytic converter.
Release nut (2) on negative lead (3) on body.

Negative lead:
Release nut (1) on negative lead on E catalytic converter.

Installation:
Replace nut. Tightening Torque, refer to Technical Data 18 00 5AZ.

Note:
Cable lugs of positive and negative lead with conical seat.
Detach negative lead with special tool 18 0 050.

Positive lead:

Caution!
Risk of breakage to ceramic insulation!

The positive lead should only be detached from the E catalytic converter in exceptional circumstances,

e.g. if the cable is damaged. On a replacement catalytic converter, the positive leads are preassembled on the catalytic converter.

If the nut on the positive lead has to be released, grip the cable lug and carefully release the positive lead nut.
If necessary, detach positive lead with special tool 18 0 050.

Installation:
Do not make contact with connection points of positive lead.
Replace nut.
Tightening Torque must be observed without fail, refer to Technical Data 18 00 5AZ.
After completing installation tasks, connect DIS Tester or MoDiC.
Select DME diagnosis