Mercedes-Benz C240 Ambient Temperature Sensor (Switch) Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(125)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(125)

Ambient Temperature Sensor (Switch) Replacement Service

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

On average, the cost for a Mercedes-Benz C240 Ambient Temperature Sensor (Switch) Replacement is $136 with $41 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2005 Mercedes-Benz C240V6-2.6LService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$196.37Shop/Dealer Price$234.22 - $308.38
2002 Mercedes-Benz C240V6-2.6LService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$176.37Shop/Dealer Price$214.25 - $288.43
2001 Mercedes-Benz C240V6-2.6LService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$176.37Shop/Dealer Price$214.25 - $288.43
2004 Mercedes-Benz C240V6-2.6LService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$176.37Shop/Dealer Price$214.21 - $288.36
2003 Mercedes-Benz C240V6-2.6LService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$176.37Shop/Dealer Price$214.27 - $288.48
Show example Mercedes-Benz C240 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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(125)

Rating Summary
118
4
2
1
0
118
4
2
1
0

Brian

23 years of experience
661 reviews
Brian
23 years of experience
Mercedes-Benz C240 V6-2.6L - When I slow down and stop the car, engine shuts off Inspection - Jacksonville, Florida
Great

Adam

17 years of experience
230 reviews
Adam
17 years of experience
Mercedes-Benz C240 V6-2.6L - Fuel is leaking from gas tank - Pompano Beach, Florida
Adam was very thorough, helped me feel at ease with the quoted car repairs, and went the extra mile.

James

31 years of experience
690 reviews
James
31 years of experience
Mercedes-Benz C240 V6-2.6L - Car is not starting - Irvine, California
very knowledgeable and trustworthy

Robert

31 years of experience
641 reviews
Robert
31 years of experience
Mercedes-Benz C240 V6-2.6L - Oil Change - Milpitas, California
This is the BEST service I have ever found....the MBZ dealer was a RIP OFF and if you went to a shop you had to get a ride and it was still expensive.....I work from home and it's the perfect fit. I wish you guys mucho success. I'm referring everyone I know!!! Laura Mattos

Excellent Rating

(125)

Rating Summary
118
4
2
1
0
118
4
2
1
0
Number of Mercedes-Benz C240 services completed
1375+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

P0455 OBD-II Trouble Code: System Gross Leak Evaporative Emission
P0455 Trouble Code definition System Gross Leak Evaporative Emission The Code P00455 code is often associated with P0440 code. What...
How to Transfer a Car Title in Rhode Island
A A car title is the document that proves ownership of a particular vehicle. However, when that ownership changes, whether through a sale, a donation, or through inheritance, the title must be updated to reflect the new situation. This is...
How to Drive a Manual Transmission Car Without Using the Clutch
Manual transmissions have a clutch that allows you to change gears when needed. There may come a time when your clutch fails while you're on the road.

Windshield wipers not working

There are many different reasons for your windshield wipers not functioning correctly. It sounds like you need a qualified technician, such as one from YourMechanic, to stop by and inspect your windshield wipers (https://www.yourmechanic.com/services/wipers-are-not-working-inspection), A/C compressor and transmission to see...

Dpf problems, car now in limp mode

Hi there. The diesel particulate filter (DPF) is a device designed to remove soot from the exhaust gas of the diesel engine. However, diesel particulate filters must be cleaned from time to time or they will block up. Try removing...

My rpo code is m30 which means I have a 4l60e, what is the difference between ID code LAD and CAD will they interchange?

Hello, the transmission will bolt up to vehicle. The difference can be configuration of operating pressures, clutch pack stack and shift points. These codes are for engine and vehicle type match. The transmission will work just may not have...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com