FixVault

13 62 531 Replacing Engine Coolant Temperature Sensor (N73)

Necessary preliminary tasks: 

WARNING: Danger of scalding!

Only perform these tasks on an engine that has cooled down.

Recycling 

Catch and dispose of escaping coolant.

Observe country-specific waste-disposal regulations.

Disconnect plug (1) from temperature sensor.

Release temperature sensor (2).

Tightening torque: 13 62 2AZ.  See 13 62 SENDERS FOR CONTROL UNIT

Fig 1: Identifying Plug And Temperature Sensor
G04740446Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME.

Check cooling system for leaks. 

If necessary, top up coolant, BMW Service Operating Fluids MG17.  See FUEL SYSTEM - OPERATING FLUIDS