Mercedes-Benz CLK500 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

(52)

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

(52)

Oxygen Sensor Replacement Service

How much does a Oxygen Sensor Replacement cost?

On average, the cost for a Mercedes-Benz CLK500 Oxygen Sensor Replacement is $538 with $443 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2006 Mercedes-Benz CLK500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1537.55Shop/Dealer Price$1910.69 - $2990.74
2003 Mercedes-Benz CLK500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1517.55Shop/Dealer Price$1890.72 - $2970.79
2003 Mercedes-Benz CLK500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$981.51Shop/Dealer Price$1220.67 - $1898.71
2005 Mercedes-Benz CLK500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1517.55Shop/Dealer Price$1890.68 - $2970.72
2004 Mercedes-Benz CLK500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1517.55Shop/Dealer Price$1890.75 - $2970.84
2006 Mercedes-Benz CLK500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$981.51Shop/Dealer Price$1220.67 - $1898.71
2004 Mercedes-Benz CLK500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$986.51Shop/Dealer Price$1225.43 - $1903.29
2005 Mercedes-Benz CLK500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$986.51Shop/Dealer Price$1226.09 - $1904.43
Show example Mercedes-Benz CLK500 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

(52)

Rating Summary
47
3
0
0
2
47
3
0
0
2

David

36 years of experience
195 reviews
David
36 years of experience
Mercedes-Benz CLK500 V8-5.0L - Car is not starting - Los Angeles, California
I didn't know what to expect I think I'm going to continue my car(s) maintenence via ym.com!

Mario

20 years of experience
110 reviews
Mario
20 years of experience
Mercedes-Benz CLK500 V8-5.0L - Battery - Cape Coral, Florida
Great person and mechanic!

Omar

12 years of experience
287 reviews
Omar
12 years of experience
Mercedes-Benz CLK500 V8-5.0L - Oil Change - Pompano Beach, Florida
Appreciated my 15 year old Benz and treated it carefully

Efrain

20 years of experience
81 reviews
Efrain
20 years of experience
Mercedes-Benz CLK500 V8-5.0L - ABS Speed Sensor Replacement (Driver Side Front, Passenger Side Front) - Glenn Dale, Maryland
Great. Mechanic..Great. service Ken.

Excellent Rating

(52)

Rating Summary
47
3
0
0
2
47
3
0
0
2
Number of Mercedes-Benz CLK500 services completed
572+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

The Most Common Error Codes for Transmission Problems
If your Check Engine Light has come on, there are a number of conditions that could be causing it. Many are related...
Symptoms of a Bad or Failing Throttle Body Temp Sensor
Common signs include poor engine performance, stalling, and broken electrical connections.
How to Replace a Crankshaft Position Sensor
The crankshaft position sensor, along with the camshaft sensor, helps the vehicle determine top dead center, among other engine management tasks.

Speedometer not working in a 2004 Chrysler PT Cruiser

There may be a wiring issue in the speedometer circuit, or the gauge in the instrument cluster may be bad. I would ask for help from one of the mechanics at YourMechanic to help diagnose and repair your speedometer concern...

Do I need a new alternator?

I would recommend having your alternator (https://www.yourmechanic.com/services/alternator-replacement) tested for proper function with a digital multimeter by a qualified technician. This test will determine if the alternator is charging the battery at the proper levels. If the alternator is not charging...

All wheel drive not disengaging.

Hi there. If the AWD light tends to flash slow, then the wheel range is high and the abs sensor would need replaced. If the AWD light is flashing fast, then the powertrain oil temperature is rising quickly. In that...

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