13 62 531 Replacing coolant temperature sensor (N74)

Only perform this work after engine has cooled down.

Necessary preliminary tasks: 

• Read out fault memory of DME control unit; if necessary, work through test schedules
• Turn off ignition
• Remove intercooler EXPANSION TANK .

Unlock plug (1) and remove.

Unfasten coolant temperature sensor (2).

Installation: 

Tightening torque: see 1AZ in 13 62 SENDERS FOR CONTROL UNIT

Fig 1: Identifying Coolant Temperature Sensor And Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Delete fault memory.

Check coolant level.

Check cooling system for leaks.