Why does my Mercedes-Benz radiator temperature gauge not work?

Why does my Mercedes-Benz radiator temperature gauge not work?

Its either the thermo opening or air moving across the radiator. Most all cars run cooler radiator temps underway than in traffic. Thats good, the gauge actually works, unlike my POS Land Rover that wont budge a mm between 180-235F :banghead: The gauge should register 90C and shouldn’t vary regardless of outside temp or load.

How does the temperature sensor work on a Mercedes Benz?

The single pin sensor sends its signal to the temperature gauge in the dash while the two-pin (or in some cases four-pin) sensor sends its signal to the fuel injection management system. Let the car cool so you don’t have to work around a hot engine.

What should the temp be on a Mercedes Benz?

The gauge should register 90C and shouldn’t vary regardless of outside temp or load. If the gauge varies noticeably then either the thermostat is defective or the sensor is defective. If you still have warranty get it checked.

How to replace the W124 coolant temperature sensor?

Using a 22mm deep socket (red arrow) really makes the job easier as it will fit right over the top of the sensor and down to the base nut, allowing easy removal. Place the deep socket over the sensor (red arrow) and remove the sensor from the housing. The sensor has a soft brass base (red arrow); do not over torque this sensor.

Why does my car temp go up after I start the car?

When I start the car and wait some minutes before driving the temp gauge is normally moving up to a warmer temp. But after driving slowly for I while it goes down?! Can someone explain this? Above 80 as in your first pic is normal for me and does not move much – unless I switch heater on full but then only temporary. Thanks for your answer.

What’s the temp on a c350 in Florida?

My temp never drops – but I rarely have the heat on in Florida! My C350 has always hovered around 90.

Its either the thermo opening or air moving across the radiator. Most all cars run cooler radiator temps underway than in traffic. Thats good, the gauge actually works, unlike my POS Land Rover that wont budge a mm between 180-235F :banghead: The gauge should register 90C and shouldn’t vary regardless of outside temp or load.

Is it possible for a Mercedes Benz to overheat?

On especially hot days, even the most cared-for vehicles are susceptible to overheating. Mercedes-Benz is known for their luxury vehicles and tough engineering that can withstand serious tests. Unfortunately, even a Mercedes can overheat in the middle of a country road, leaving you stranded.

The gauge should register 90C and shouldn’t vary regardless of outside temp or load. If the gauge varies noticeably then either the thermostat is defective or the sensor is defective. If you still have warranty get it checked.

My temp never drops – but I rarely have the heat on in Florida! My C350 has always hovered around 90.