Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.
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.
On average, the cost for a Mercedes-Benz S420 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 |
|---|---|---|---|
| 1994 Mercedes-Benz S420V8-4.2L | Service typeAmbient Temperature Sensor (Switch) Replacement | Estimate$364.17 | Shop/Dealer Price$443.97 - $643.98 |
| 1996 Mercedes-Benz S420V8-4.2L | Service typeAmbient Temperature Sensor (Switch) Replacement | Estimate$344.17 | Shop/Dealer Price$424.00 - $624.03 |
| 1997 Mercedes-Benz S420V8-4.2L | Service typeAmbient Temperature Sensor (Switch) Replacement | Estimate$344.17 | Shop/Dealer Price$424.00 - $624.03 |
| 1995 Mercedes-Benz S420V8-4.2L | Service typeAmbient Temperature Sensor (Switch) Replacement | Estimate$344.17 | Shop/Dealer Price$423.96 - $623.96 |
| 1998 Mercedes-Benz S420V8-4.2L | Service typeAmbient Temperature Sensor (Switch) Replacement | Estimate$344.17 | Shop/Dealer Price$424.02 - $624.08 |
| 1999 Mercedes-Benz S420V8-4.2L | Service typeAmbient Temperature Sensor (Switch) Replacement | Estimate$344.17 | Shop/Dealer Price$424.00 - $624.03 |
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.
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.
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
Real customer reviews from Mercedes-Benz owners like you.
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.
