WARNING: Risk of scalding!
Only carry out repair work on the cooling system after the engine has cooled down!

Necessary preliminary tasks:

Installation location:

At cylinder head, left.

Coolant can escape during change of the coolant temperature sensor. Catch and dispose of coolant.

Release screw.

Pull intake silencer (1) upwards and disconnect from clean air pipe (2).

Pull off intake silencer (1) from air filter housing and remove.

Remove clean air pipe.

Fig 1: Removing Intake Silencer

Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, unlock and pull off connector and wiring.

Carefully pull cable channel (1) upwards.

Fig 2: Pulling Cable Channel Upwards

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock connector (1) and remove.

Pull off lock (2) and remove coolant temperature sensor (3).

Installation note:

Replace sealing ring
IF NECESSARY, TOP UP COOLANT .
CHECK COOLING SYSTEM FOR WATER LEAKS

Fig 3: Identifying Connector, Lock, And Coolant Temperature Sensor
Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Clear diagnostic fault entries from fault memory.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

12 62 500 Replacing coolant temperature sensor (N16)