Mercedes-Benz CL500 Oxygen Sensor Replacement at your home or office.

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$361.87 - $653.77

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Oxygen Sensor Replacement Estimate for Mercedes-Benz CL500

Mercedes-Benz CL500 Oxygen Sensor Replacement costs $471 on average.

CarServiceEstimateShop/Dealer Price
2004 Mercedes-Benz CL500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$847.51Shop/Dealer Price$1058.86 - $1646.29
2002 Mercedes-Benz CL500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$847.51Shop/Dealer Price$1058.76 - $1646.11
2004 Mercedes-Benz CL500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$847.51Shop/Dealer Price$1058.86 - $1646.29
2000 Mercedes-Benz CL500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$734.71Shop/Dealer Price$915.35 - $1413.49
2005 Mercedes-Benz CL500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$847.51Shop/Dealer Price$1061.80 - $1651.44
1999 Mercedes-Benz CL500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$1212.55Shop/Dealer Price$1513.02 - $2372.63
2006 Mercedes-Benz CL500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$847.51Shop/Dealer Price$1053.34 - $1636.63
1998 Mercedes-Benz CL500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$1217.55Shop/Dealer Price$1517.65 - $2376.97
Show example Mercedes-Benz CL500 Oxygen Sensor Replacement prices

Oxygen Sensor Replacement Service

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.

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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating


YourMechanic Mercedes-Benz CL500 Service

Average Rating

4.6/5

Number of Reviews

14

Rating Summary
12
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Albert

20 years of experience
80 reviews
Albert
20 years of experience
Mercedes-Benz CL500 - Car is not starting - Lawrenceville, Georgia
Albert is a great guy.

Robert

12 years of experience
4 reviews
Robert
12 years of experience
Mercedes-Benz CL500 - Radiator - Houston, Texas
If you read nothing beyond this first sentence, just know that Robert is magnificent! On my repair day, Robert showed up promptly at the requested appointment time, sending several heads-up texts prior to his visit. Upon arrival, he very kindly and pleasantly introduced himself, then immediately proceeded to review the requested service and closely inspected the vehicle before bringing out his heavy duty tools. Radiator replacement can be tricky, but Robert tackled it with ease and with a highly professional methodology which can only come from longtime mechanical knowledge and experience. Not only was Robert careful to keep the job site clean and orderly, but he also took delicate care in disassembling components in and around the engine. Once the radiator was successfully replaced and the coolant levels and functionality restored to factory specs, Robert went above and beyond by scanning the vehicle computer for any fault codes, etc. He diagnosed a misfire and tested some ignition components, after which he very kindly suggested what needed to be repaired in the near future. Overall, I will gladly admit that I am very satisfied with the repair work received by Robert. I cannot thank him and YourMechanic enough, as the service received was excellent, affordable, precise, professional and highly convenient. I would highly recommend Robert as a mechanic, as his knowledge, insights, technique and professionalism are without equal.

Breck

18 years of experience
538 reviews
Breck
18 years of experience
Mercedes-Benz CL500 - Brake System Flush - Houston, Texas
Breck was an absolute professional. He performed the brake job quickly, thoroughly, and meticulously. Very happy with the results. Highly recommended A+

Yahshif

8 years of experience
128 reviews
Yahshif
8 years of experience
Mercedes-Benz CL500 - Car does not shift from park to drive - Los Angeles, California
Extremely professional and knowledgeable. Definitely recommend him, and I will be booking him again. Thank you.

Excellent Rating


YourMechanic Mercedes-Benz CL500 Service

Average Rating

4.6/5

Number of Reviews

14

Rating Summary
12
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12
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Red-stars EXCELLENT RATING ON
Number of Mercedes-Benz CL500 services completed
154+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
800+
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