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 62 532 Replacing radiator outlet coolant temperature sensor (N51)
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.
Press retaining clips (1) together.
Remove temperature sensor (2) in direction of arrow.
Assemble engine.
Check function of DME.
Check cooling system for leaks. See 17 00 009 CHECKING COOLING SYSTEM FOR WATER LEAKS .
Check coolant level and top up if necessary.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.