Q: Temperature gauge problem on a 2005 Mercedes Benz S500

asked by on

hello there.... i have a question about my temp gauge on a mercedes benz s500 my guage seems to go up above its normal state what i mean by this is it goes above the red line and it nevers comes back down is there a way to fix it

My car has 130000 miles.
My car has an automatic transmission.

Hello - I would first check for problem codes, whether the Check Engine light is illuminated or not. And, if the engine is not really overheating, the problem is most likely the engine temperature sensor (the sensor for the gauge, not the sensor that feeds engine management - they are different), or the wiring to that sensor. A very high temperature reading would suggest that the sensor or it’s wiring is shorted. I recommend a engine overheating inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, confirm this diagnosis, and give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Temperature gauge problem on a 2005 Mercedes Benz S500

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: In the middle of driving my car stops moving but is still running.

What you are describing is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer...

Q: Truck misfires when the engine warms up - 1995 Chevrolet C3500

If the heat sensitivity is a good clue, this could well be the ignition control module, which is quite heat sensitive on the big block Chevy's. Would check fuel pressure (while running) as well to make sure you're getting enough...

Q: Q: Hesitation when accelerating

Hi There, It sounds like you are describing the symptoms of a failing throttle position sensor. The throttle position sensor monitors the throttle position of the throttle plate inside the throttle body in relation to your foot position on the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.