Mercedes-Benz S550e Oxygen Sensor 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

(36)

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

(36)

Oxygen Sensor Replacement Service

How much does a Oxygen Sensor Replacement cost?

On average, the cost for a Mercedes-Benz S550e Oxygen Sensor Replacement is $336 with $196 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2017 Mercedes-Benz S550eV6-3.0L Turbo HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$546.70Shop/Dealer Price$648.23 - $944.70
2015 Mercedes-Benz S550eV6-3.0L Turbo HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$626.85Shop/Dealer Price$748.90 - $1110.92
2015 Mercedes-Benz S550eV6-3.0L Turbo HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$537.69Shop/Dealer Price$637.47 - $932.64
2016 Mercedes-Benz S550eV6-3.0L Turbo HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$537.69Shop/Dealer Price$638.87 - $935.08
2016 Mercedes-Benz S550eV6-3.0L Turbo HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$537.69Shop/Dealer Price$641.44 - $939.59
Show example Mercedes-Benz S550e Oxygen Sensor Replacement prices

What is the Oxygen Sensor all about?

With each new model year, manufacturers are adding more oxygen sensors to better manage engine operation. Some high performance engines have an oxygen sensor for each cylinder as well as one for the rear of each catalytic convertor. The sensors are located either underneath the hood or underneath the car. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. The front (upstream) sensors measure the amount of oxygen in the exhaust system. The purpose of the front oxygen sensor(s) is to measure how rich or lean the gases are as the gases exit the combustion chamber. Depending upon whether the exhaust gas is lean (high in oxygen content) or rich (low in oxygen content), the amount of fuel entering the engine is adjusted by the engine management computer to try and maintain an ideal mixture that produces the lowest emissions output from the catalytic convertor.

Rear (downstream) sensors are located behind the catalytic converter. The purpose of the rear oxygen sensor(s) is to monitor the oxygen content of the exhaust gases leaving the catalytic convertor.

If one or more of the oxygen sensors are faulty, your car may not pass the emissions test. If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter.

Oxygen Sensor-MATROX-1

When replacing the oxygen sensor remember:

  • Many oxygen sensors are damaged by leaking oil or coolant. If that is the case, the cause of that leak needs to be identified and repaired, or else the replacement oxygen sensor will be damaged as well.
  • New vehicles require specific oxygen sensors, and not the universal sensors that were common prior to 1996.

How it's done:

  • Scan the computer in the car for codes.
  • Inspect for vacuum leaks and holes in the exhaust system.
  • Remove and replace the oxygen sensor if it is bad.
  • Check electrical connections.
  • Check for proper operation of oxygen sensors.
  • Clear diagnostic codes.
  • Test drive car.

Our recommendation:

Keep up with the tune-ups. If check engine light is on, don't drive the car too long without getting it inspected. If check engine light is flashing, pull over and get the car towed to avoid costly repairs. Ask the mechanic to inspect the vacuum hoses and leaks in the exhaust system. If the vacuum hose or exhaust system is leaking, it will display an oxygen sensor fault code. Replacing an oxygen sensor may not fix the problem.

What common symptoms indicate you may need to replace the Oxygen Sensor?

  • Check Engine light is on.
  • Car is getting poor gas mileage.
  • Emission test fails.

How important is replacing the oxygen sensor?

Your vehicle has multiple oxygen sensors, and they all help the car run optimally. The front sensors measure how much oxygen is in the exhaust stream to measure how rich or lean the gases leaving the gas chamber are. The rear sensors measure the oxygen content of the gases as they leave the catalytic converter. The oxygen sensors then relay this information to your vehicle’s electronic control unit, so that it can adjust as necessary. Because cars depend on an ideal fuel-to-air ratio to function optimally, the oxygen sensors are leaned on for engine performance. When your oxygen sensors fail your car will run less smoothly, get worse mileage, and have worse emissions.

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

(36)

Rating Summary
34
2
0
0
0
34
2
0
0
0

Jerry

31 years of experience
48 reviews
Jerry
31 years of experience
Mercedes-Benz C43 AMG V8-4.3L - Oxygen Sensor Replacement (Front/Upper/Upstream) - Las Vegas, Nevada
Jerry did a great job. definitely knows MB. very clean operation.

Simon

31 years of experience
109 reviews
Simon
31 years of experience
Mercedes-Benz ML320 V6-3.2L - Oxygen Sensor Replacement (Front/Upper/Upstream) - Albuquerque, New Mexico
Performed the job with professionalism, polite and courteous.

Michael

43 years of experience
152 reviews
Michael
43 years of experience
Mercedes-Benz S550 V8-4.7L Turbo - Oxygen Sensor Replacement (Front/Upper/Upstream) - Huntington Beach, California
Dear Gentleperson, To whom it may concern,Mr. Michael David Giovannetti is truly a asset to said company. I'm very happy with the awesome service and convient of not leaving my home. Hapyy holidays,stay and happy New Year. Kind regards,

Tyrone

20 years of experience
105 reviews
Tyrone
20 years of experience
Mercedes-Benz E320 V6-3.2L - Oxygen Sensor Replacement (Front/Upper/Upstream, Rear/Lower/Downstream) - Houston, Texas
Tyrone was late. However he did call to explain that he would be late and gave his estimated arrival time. He was professional and completed the job in the timeframe he promised.

Excellent Rating

(36)

Rating Summary
34
2
0
0
0
34
2
0
0
0
Number of Mercedes-Benz Oxygen Sensor Replacement services completed
396+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

Symptoms of a Bad or Failing Speedometer Sensor
Common signs include the speedometer not working, cruise control not engaging, Check Engine Light coming on, and loss of power.
How to Replace an Air Cleaner Temperature Sensor
The air cleaner temperature sensor allows the computer to adjust engine timing and air/fuel ratio. A rough idle or "engine lag" are signs of failure.
What Sensors Do All Cars Have? And What Optional Ones Are There?
Modern cars have an increasing amount of sensors. Most cars have an oxygen sensor and a throttle position sensor, but parking sensors are optional.

Engine not firing

Hello, thanks for writing in about your Ford F-150. You will need to scan the computer to see if there is codes for the crankshaft (https://www.yourmechanic.com/services/crankshaft-position-sensor-replacement) or camshaft sensor (https://www.yourmechanic.com/services/camshaft-position-sensor-replacement). If you'd like to have this fixed, consider YourMechanic, as...

Check Engine Light. Trouble code P0141 appears but all sensors are new. Engine still stalls.

Hello. Depending on why the Check Engine Light is still coming on would determine if it is safe to drive it. If you are getting codes related to the oxygen sensors and the catalytic converter then you may have the...

O/D off sensor lit up on the dashboard.

Hi there. I recommend changing the transmission fluid first to see if there is any contanimates in the oil and filter. If the fluid is dirty then the sensors will not work very good. If the fluid is good and...

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