12 62 500 Replacing coolant temperature sensor (N14)

Necessary preliminary tasks: 

• Read out fault memory of DME control unit
• Check stored fault messages
• Switch off ignition

Installation location: 

On cylinder head, left.

Coolant can escape when temperature sensor is being replaced. Catch and dispose of coolant.

Release clamps (2).

Detach air intake hose (3).

Remove clean air pipe (4).

Fig 1: Pressure Pipe, Air Pipe, Retaining Nut And Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and detach plugs (1 and 3).

Unlock and disconnect line (2).

Carefully pull cable duct (4) upwards slightly.

Fig 2: Cable Duct, Plugs, Line And Removal Direction

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Detach lock (2) and remove temperature sensor (3).

Installation: 

• Replace sealing ring
• If Necessary, Add Coolant 
• Check Cooling System For Water Leaks 
  Fig 3: Lock, Plug, Temperature Sensor And Removal Direction

  Courtesy of BMW OF NORTH AMERICA, INC.