Mercedes-Benz ML320 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 ML320 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
2001 Mercedes-Benz ML320V6-3.2LService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$196.37Shop/Dealer Price$234.22 - $308.38
2002 Mercedes-Benz ML320V6-3.2LService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$176.37Shop/Dealer Price$214.25 - $288.43
1999 Mercedes-Benz ML320V6-3.2LService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$176.37Shop/Dealer Price$214.25 - $288.43
2009 Mercedes-Benz ML320V6-3.0L Turbo DieselService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$176.37Shop/Dealer Price$214.21 - $288.36
2007 Mercedes-Benz ML320V6-3.0L Turbo DieselService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$176.37Shop/Dealer Price$214.27 - $288.48
2008 Mercedes-Benz ML320V6-3.0L Turbo DieselService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$176.37Shop/Dealer Price$214.25 - $288.43
2000 Mercedes-Benz ML320V6-3.2LService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$181.37Shop/Dealer Price$219.01 - $293.01
2003 Mercedes-Benz ML320V6-3.2LService typeAmbient Temperature Sensor (Switch) ReplacementEstimate$181.37Shop/Dealer Price$219.66 - $294.15
Show example Mercedes-Benz ML320 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
114
7
1
1
2
114
7
1
1
2

Donald

40 years of experience
124 reviews
Donald
40 years of experience
Mercedes-Benz ML320 V6-3.2L - Serpentine/Drive Belt - Atlanta, Georgia
Donald was very knowledgeable and professional, he completed the work in a very timely manner. He arrived on time and also informed me of other things that need to be addressed. I will definitely request DONALD again.

Joshua

27 years of experience
709 reviews
Joshua
27 years of experience
Mercedes-Benz ML320 V6-3.2L - Window is not working - Hercules, California
Originally, I was scheduled to work with another mechanic, who is no longer available with YourMechanic. I was told that Josh would be taking over the work on my Mercedes, but that I would have to wait a week for his next available appointment. My first experience with Josh was a very positive one. He is very professional, upbeat and friendly. He arrived early, explained the issue at hand very well and was very clear and concise about next steps. He found that my original mechanic only found part of the problem with my car, not the whole issue. So he comped the labor and parts from his visit and scheduled a follow up appointment with me to install the final part and complete the job. Thank you very much, Josh!

Theodore

16 years of experience
1587 reviews
Theodore
16 years of experience
Mercedes-Benz ML320 V6-3.2L - Oil Change - Woodinville, Washington
Extremely satisfied. Very professional and work was completed without a hitch.

Omar

19 years of experience
43 reviews
Omar
19 years of experience
Mercedes-Benz ML320 V6-3.2L - Brake light is not working - Pompano Beach, Florida
He was courteous, knowledgeable and went beyond what I expected to assist me.

Excellent Rating

(125)

Rating Summary
114
7
1
1
2
114
7
1
1
2
Number of Mercedes-Benz ML320 services completed
1375+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

How to Disable a Car Alarm
Car alarms can be shut off by starting the car, unlocking the car door, or disconnecting the battery. Maintain your key fob to cancel future alarms.
How to Replace a Lost or Stolen Car Title in North Dakota
Your Your car title is what binds you to your vehicle as it proves you are the registered owner. This is a powerful title to hold, and one you will want to keep track of. Unfortunately things can happen and...
P2062 OBD-II Trouble Code: Reductant Supply Control Circuit Open
P2062 P2062 code definition Reductant Supply Control Circuit Open What the P2062 code means This code means the Engine Control Module (ECM) (https://www.yourmechanic.com/parts/engine-control-module), or Powertrain Control Module (PCM), doesn’t see electrical current flowing when it commands the pump on. What...

radio not working

The blower motor only working on high speed is a common symptom of a failing blower motor resistor (https://www.yourmechanic.com/services/cooling-fan-resistor-replacement); but the fact the radio stopped working at the same time is unusual. It's possible that this could still be two...

Car won't shift from Park to Drive - it only shifts to third gear

The problem you have described with your vehicle not shifting from park to drive could be a problem with the shifter mechanism. It could be a worn shift cable and/or bushings (https://www.yourmechanic.com/services/shift-selector-cable-replacement). I recommend having your vehicle's not shifting from...

How do I change trip odometer stats

Hi there. To change the trip status (https://www.yourmechanic.com/article/4-essential-things-to-know-about-your-car-s-odometer) on the dash, press the DISP button on the steering wheel until the dash reads the trip messages. Then, you can cycle through the trip status on the dash and see what...

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