13 62 531 Replacing coolant temperature sensor (N55)

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WARNING: Risk of scalding!

Only perform this repair work on an engine that has cooled down.

Recycling

Catch and dispose of escaping coolant.

Observe country-specific waste disposal regulations.

Necessary preliminary tasks:

Read out fault code memory of the DME control unit.
Switch off ignition
Remove IGNITION COIL COVER

NOTE: Coolant temperature sensor is mounted on cylinder head at front.

Variant for hot countries only:

Release screw (1).

Tightening torque 17 22 4AZ .

Remove engine oil pipe and set aside.

Catch and dispose of emerging engine oil.

Fig 1: Identifying Coolant Temperature Sensor Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock connector (1) and remove.

Unfasten coolant temperature sensor (2).

Installation note:

Tightening torque 13 62 5AZ .

If necessary, top up COOLANT .

Check COOLING SYSTEM for leaks.

Fig 2: Identifying Coolant Temperature Sensor And Connector

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault messages.

Delete fault memory.