Keep tabs on engine temperature with the Four Seasons switch 36451, an engine coolant temperature sensor / switch that senses coolant temperature and sends that reading to the vehicle's systems. It fits many Mercedes-Benz models, among them the 1991-1993 Mercedes-Benz 300TE, 1988-1989 Mercedes-Benz 300CE and 1986-1989 Mercedes-Benz 300E, as a direct-fit replacement for the listed applications. See the "Vehicles it fits" section for the full list and engine details.
Four Seasons lists this part as a Coolant Temp Sensor Switch, so you may see it under either name. The company engineers and tests its products, drawing on more than 50 years of mobile A/C experience.
- Brass construction: used for accurate temperature sensing.
- Zinc-coated terminal: resists corrosion.
- Color coded: for easy identification.
- Sealing included: comes with the gasket, O-ring or seal Four Seasons supplies for proper replacement.
Signs this part may need replacing include erratic or inaccurate temperature readings or a warning light on the dash. Other faults can cause the same symptoms, so diagnose the cause before you replace the sensor. If a failed coolant temperature sensor is the cause, this unit replaces it.
Interchange: 1550742 · 207737 · 11136451 · 19144855 · 19189497 · 1712677 · 0065427717 · A77737 · 49632 · CT0199 · SU6103
This part cross-references / interchanges with the following part numbers:
1550742, 207737, 36451, 11136451, 19144855, 19189497, 1712677, 0065427717, A77737, 49632, CT0199, SU6103
Frequently Asked Questions
What does the Four Seasons 36451 do?
It senses engine coolant temperature and sends that reading to the vehicle's systems. Four Seasons lists it as a Coolant Temp Sensor Switch.
Will it fit my 1986-1989 Mercedes-Benz 300E?
Yes, the 1986-1989 Mercedes-Benz 300E is a listed application, as are the 1991-1993 300TE and 1988-1989 300CE. Check the "Vehicles it fits" section for your exact vehicle.
What comes in the box?
The sensor / switch comes with the gasket, O-ring or seal that Four Seasons supplies for proper replacement.
What is the sensor made of?
It has brass construction for accurate temperature sensing and a zinc-coated terminal that resists corrosion. It is also color coded for easy identification.
What are signs of a failing coolant temperature sensor?
Erratic or inaccurate temperature readings or a dash warning light may point to a failing sensor. Other faults can cause these signs, so diagnose the cause before you replace it.
