BMW 328Ci Coolant Temperature Switch (Sensor) Replacement at your home or office.

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Coolant Temperature Switch (Sensor) Replacement Service

How much does a Coolant Temperature Switch (Sensor) Replacement cost?

On average, the cost for a BMW 328Ci Coolant Temperature Switch (Sensor) Replacement is $409 with $29 for parts and $380 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2000 BMW 328CiL6-2.8LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$517.86Shop/Dealer Price$602.35 - $698.28
Show example BMW 328Ci Coolant Temperature Switch (Sensor) Replacement prices

What is the Coolant Temperature Switch (Sensor) all about?

The coolant temperature switch, also called the coolant temperature sensor, is a switch that reads the engine coolant temperature and sends a signal to the engine control module, or ECM, to control other functions of engine operation such as the air-fuel ratio.

It is also called a switch because on some cars, it is used to turn on the engine cooling fan at a specific temperature. This aids in the engine warm-up process as well as keeping the engine at a safe operating temperature.

Keep in mind:

  • The coolant temperature switch is a crucial part of the cooling system. If faulty, it can cause severe internal engine damage due to overheating, incorrect air-fuel ratio, or incorrect ignition timing. It can also cause shorter life to the cooling fan motor or other electrical components of the cooling system.
  • Some vehicles are equipped with a separate sensor to display the engine temperature to the driver via the temperature gauge.

How it's done:

  • The Coolant Temperature Switch is verified that it needs to be replaced. The coolant is drained until the switch is exposed.

  • The defective Coolant Temperature Switch is removed by disconnecting the connector and removing it from the manifold.

  • The new Coolant Temperature Switch is installed into the mounting hole in the manifold and the electrical connector is reconnected. The coolant is then refilled.

  • The Coolant Temperature Switch is tested for operation, codes cleared, and retested to ensure all codes have been resolved.

  • The vehicle is road tested to ensure proper operation of the Cooling System.

Our recommendation:

If you suspect that your coolant temperature switch has failed, have one of our licensed mechanics come out immediately to diagnose the problem.

What common symptoms indicate you may need to replace the Coolant Temperature Switch (Sensor)?

  • Check Engine light on
  • Engine overheating
  • Cooling fan runs intermittently
  • Engine misfires, stalls, or idles roughly
  • Erratic coolant temperature

How important is this service?

This part, when faulty, could cause the fan to run intermittently or not at all, which in turns causes overheating or overuse of the cooling fan motor. Whenever overheating occurs, severe engine damage is a possibility.

The engine air-fuel ratio is what keeps it running smoothly. If the ratio gets skewed, the engine will have poor fuel economy and run poorly or not at all. The coolant temperature switch is important because it gives the ECM the information it needs to make this calculation and run the engine optimally. YourMechanic will be able to tell you if this part is performing correctly.

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Real customer reviews from BMW owners like you.

Excellent Rating

(9)

Rating Summary
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Robert

31 years of experience
641 reviews
Robert
31 years of experience
BMW 328Ci L6-2.8L - Service Light is on - San Jose, California
Robert is an excellent and expert mechanic . His knowledge of vehicles as well as his extremely professional manner make him a great choice to work on your vehicle . He goes above and beyond . I have used him on two jobs, he has always called the night before to touch base, and then is always prompt and courteous. He is awesome . Not only is he a great and master mechanic but also a great person . We are lucky to have him work and repair our vehicles .

Jose

12 years of experience
55 reviews
Jose
12 years of experience
BMW X3 L4-2.0L Turbo - Coolant Temperature Switch (Sensor) - Moreno Valley, California
He was on time. He fixed problem and gave recommendations.

Rusty

23 years of experience
515 reviews
Rusty
23 years of experience
BMW 528i L4-2.0L Turbo - Coolant Temperature Switch (Sensor) - Mansfield, Texas
Amazingly cheerful  and

Clarissa

27 years of experience
236 reviews
Clarissa
27 years of experience
BMW X3 L6-3.0L - Coolant Temperature Switch (Sensor) - Philadelphia, Pennsylvania
Clarissa is thorough and efficient! She will definitely be my regular mechanic.

Excellent Rating

(9)

Rating Summary
8
0
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1
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8
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Number of BMW Coolant Temperature Switch (Sensor) Replacement services completed
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services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
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