Mercedes-Benz 300SE Ambient Temperature Sensor (Switch) Replacement Costs

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Ambient Temperature Sensor (Switch) Replacement Service

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

On average, the cost for a Mercedes-Benz 300SE Ambient Temperature Sensor (Switch) Replacement is $220 with $125 for parts and $95 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1990 Mercedes-Benz 300SEL6-3.0L	Service typeAmbient Temperature Sensor (Switch) Replacement	Estimate$490.66	Shop/Dealer Price$589.71 - $804.16
1992 Mercedes-Benz 300SEL6-3.2L	Service typeAmbient Temperature Sensor (Switch) Replacement	Estimate$344.17	Shop/Dealer Price$424.00 - $624.03
1993 Mercedes-Benz 300SEL6-3.2L	Service typeAmbient Temperature Sensor (Switch) Replacement	Estimate$344.17	Shop/Dealer Price$424.00 - $624.03
1991 Mercedes-Benz 300SEL6-3.0L	Service typeAmbient Temperature Sensor (Switch) Replacement	Estimate$448.66	Shop/Dealer Price$547.69 - $762.12
1988 Mercedes-Benz 300SEL6-3.0L	Service typeAmbient Temperature Sensor (Switch) Replacement	Estimate$448.66	Shop/Dealer Price$547.83 - $762.37
1989 Mercedes-Benz 300SEL6-3.0L	Service typeAmbient Temperature Sensor (Switch) Replacement	Estimate$448.66	Shop/Dealer Price$547.77 - $762.26

Show example Mercedes-Benz 300SE Ambient Temperature Sensor (Switch) Replacement prices

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

Modern automotive HVAC systems have advanced by leaps and bounds over those used just a few years ago. Today, many high and even mid-range cars offer automatic climate control. This function basically allows you to “set it and forget it,” allowing the car’s computer to control the heating and cooling based on your preferred interior temperature. In order to do this, the computer needs information about not only the temperature inside the car, but also the ambient temperature outside the car.

The ambient temperature sensor (switch) is located either behind the front grille or in the front bumper. Its only job is to monitor air temperature (which it does through increasing/decreasing resistance in response to temperature fluctuations). This information is transmitted to the car’s computer, which then adjusts the climate control to meet your specifications.

If the ambient temperature sensor is damaged or fails, the car’s computer will not be able to automatically control the HVAC system, and the heater and air conditioner will only work in manual mode.

Keep in mind:

Because of its location, the ambient temperature sensor can be easily damaged in even minor front-end collisions.
Sensor failure is common even without an accident.

How it's done:

The ambient temperature sensor switch is verified to see if it needs to be replaced
The defective ambient temperature sensor switch is removed
The new ambient temperature sensor switch is installed
The ambient temperature sensor switch is tested for operation
The vehicle is tested to ensure proper operation of the ambient temperature sensor switch

Our recommendation:

Without the information provided by the ambient temperature sensor, your car’s computer does not have sufficient data to control the interior temperature, and will revert to manual HVAC control. You’ll still be able to use your air conditioner and heater, but only in manual mode, not in auto. If you suspect a problem with the ambient temperature sensor, have it diagnosed by one of our expert mechanics and replaced if necessary.

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

HVAC auto mode will not work
HVAC auto mode produces delivers inconsistent/incorrect operation
HVAC will only work in manual mode
Outside temperatures may display incorrectly

How important is this service?

Having automatic climate control is definitely a convenience, but not critical to the operation of your vehicle. The heater will still operate to clear the windows and provide heating and cooling on manual mode. If the ambient temperature sensor is faulty, have it replaced.

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Henry

34 years of experience

175 reviews

Henry

34 years of experience

by Mr.Rob

Mercedes-Benz 300SE L6-3.2L - Car is not starting - Voorhees, New Jersey

Henry was a true professional and a pleasure to work with. Not only was he extremely knowledgeable about the car, but he also walked me through each step he was taking to ensure the car was, and will continue to function perfectly. I could not have asked for better service! Thanks Henry, you are a TRUE EXPERT my friend and all the best moving forward!

Mack

22 years of experience

114 reviews

Mack

22 years of experience

by Keith

Mercedes-Benz 300SE L6-3.0L - Alternator - Mansfield, Texas

Performed the work as needed to our satisfaction.

Joe

23 years of experience

85 reviews

Joe

23 years of experience

by Keith

Mercedes-Benz 300SE L6-3.0L - Alternator - Mansfield, Texas

Excellent work and very personable.

Dave

23 years of experience

303 reviews

Dave

23 years of experience

by Joseph

Mercedes-Benz 300SE L6-3.0L - Car is not getting enough power - San Jose, California

Dave has integrity which I highly value.

Excellent Rating

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