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

(30)

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

(30)

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 $291 with $196 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2015 Mercedes-Benz S550eV6-3.0L Turbo HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$506.69Shop/Dealer Price$614.62 - $915.89
2016 Mercedes-Benz S550eV6-3.0L Turbo HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$486.69Shop/Dealer Price$602.15 - $909.07
2017 Mercedes-Benz S550eV6-3.0L Turbo HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$486.69Shop/Dealer Price$594.63 - $895.92
2016 Mercedes-Benz S550eV6-3.0L Turbo HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$486.69Shop/Dealer Price$602.11 - $909.00
2017 Mercedes-Benz S550eV6-3.0L Turbo HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$486.69Shop/Dealer Price$594.65 - $895.95
2015 Mercedes-Benz S550eV6-3.0L Turbo HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$575.85Shop/Dealer Price$706.08 - $1074.24
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

(30)

Rating Summary
28
2
0
0
0
28
2
0
0
0

Christopher

15 years of experience
40 reviews
Christopher
15 years of experience
Mercedes-Benz ML350 V6-3.5L - Oxygen Sensor Replacement (Front/Upper/Upstream) - Atlanta, Georgia
Fast and quick service.

Johnathan

23 years of experience
17 reviews
Johnathan
23 years of experience
Mercedes-Benz C300 V6-3.0L - Oxygen Sensor Replacement (Front/Upper/Upstream) - Bronx, New York
Gets the job done

Fred

17 years of experience
389 reviews
Fred
17 years of experience
Mercedes-Benz E55 AMG V8-5.5L Turbo - Oxygen Sensor Replacement (Front/Upper/Upstream) - Spring, Texas
Very personable & knowledgeable. Repairs completed in record time and car is in good shape again. Thanks !

Matthew

33 years of experience
1210 reviews
Matthew
33 years of experience
Mercedes-Benz ML350 V6-3.7L - Oxygen Sensor Replacement (Front/Upper/Upstream) - Newport News, Virginia
Very professional and informative

Excellent Rating

(30)

Rating Summary
28
2
0
0
0
28
2
0
0
0
Number of Mercedes-Benz Oxygen Sensor Replacement services completed
330+
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 EGR Temperature Sensor
Common signs include engine ping or knock, the Check Engine Light coming on, and failing an emissions test.
Symptoms of a Bad or Failing Oil Temperature Sensor
If the temperature gauge gives false readings or does not move, you may need to replace the oil temperature sensor.
How Long Does a Speed Sensor Last?
Today’s Today’s cars are equipped with a very wide range of sensors. Yours has a mass airflow sensor, at least one oxygen sensor, and many others. The vehicle speed sensor (VSS) is usually located on the transmission’s output shaft (although...

Where is the abs brake sensor located on the vehicle

Hi there. You vehicle is equipped with quite a few ABS brake sensors. I would need to know which one you are looking for to be exact as to where it is located. If it is a wheel speed sensor...

Coolant Temperature Gauge

This problem is likely caused by a failing thermostat (https://www.yourmechanic.com/services/thermostat-replacement). The thermostat is designed to restrict coolant flow to the radiator until the engine reaches designed working temperature (something close to 210 degrees Fahrenheit). Getting to working temperature faster is...

Check engine light comes after a long trip. OBD II scanner gives the code P0015. What would be the cause?

Hi there. The code P0015 (https://www.yourmechanic.com/article/p0015-obd-ii-trouble-code-camshaft-position-b-timing-over-retarded-bank-1-by-jay-safford) is stored for the camshaft position sensor has recorded that the timing is excessive retard. The sensor could have failed due to oil deposits leaking onto the sensor, the variable valve timing sensor has...

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