13 62 533 Replacing primary catalytic converter temperature sensor (M57T2)

Necessary preliminary tasks:

Read out fault memory of DDE control unit; if necessary, work through test schedules
Switch off ignition
E83 only: If necessary, remove windscreen washer fluid reservoir
E83 only: Remove rear underbody protection

WARNING: Scalding hazard!
Only perform this task on an engine that has cooled down.

Unlock plug (1) and remove.

Unclip cable.

Fig 1: Identifying Plug

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Release temperature sensor (1).

Installation

Tightening torque, see 13 62 1AZ in DIESEL SENDERS FOR CONTROL UNIT .

Fig 2: Identifying Temperature Sensor

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Installation

Now clear the fault memory.