Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
13 62 531 Replacing coolant temperature sensor (M52TU, M54)
Turn off ignition.
Installation location:
Coolant temperature sensor (1) is fitted below intake air manifold in cylinder head of cylinder 6.
Remove intake air manifold.
Disconnect plug connection (1).
Unscrew temperature sensor.
Installation:
Tightening torque, see 13 62 2AZ in FUEL SUPPLY SYSTEM - TIGHTENING TORQUES .
Check coolant level, top up coolant if necessary.
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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.