Mercedes-Benz SLK320 Oxygen Sensor Replacement at your home or office.

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Oxygen Sensor Replacement Estimate for Mercedes-Benz SLK320

Mercedes-Benz SLK320 Oxygen Sensor Replacement costs $473 on average.

CarServiceEstimateShop/Dealer Price
2004 Mercedes-Benz SLK320V6-3.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$862.51Shop/Dealer Price$1074.84 - $1663.01
2003 Mercedes-Benz SLK320V6-3.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$842.51Shop/Dealer Price$1054.87 - $1643.06
2002 Mercedes-Benz SLK320V6-3.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$842.51Shop/Dealer Price$1054.87 - $1643.06
2004 Mercedes-Benz SLK320V6-3.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$842.51Shop/Dealer Price$1054.83 - $1642.99
2001 Mercedes-Benz SLK320V6-3.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$842.51Shop/Dealer Price$1054.90 - $1643.11
2001 Mercedes-Benz SLK320V6-3.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$842.51Shop/Dealer Price$1054.87 - $1643.06
2002 Mercedes-Benz SLK320V6-3.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$847.51Shop/Dealer Price$1059.63 - $1647.64
2003 Mercedes-Benz SLK320V6-3.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$847.51Shop/Dealer Price$1060.29 - $1648.78
Show example Mercedes-Benz SLK320 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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Theodore

16 years of experience
1526 reviews
Theodore
16 years of experience
Mercedes-Benz SLK320 V6-3.2L - Brake Light Switch Replacement - Bellevue, Washington
Excellent services

Jerry

30 years of experience
48 reviews
Jerry
30 years of experience
Mercedes-Benz SLK320 V6-3.2L - Crankshaft Position Sensor - Las Vegas, Nevada
Excellent job and experience knowledgeable very convenient ,I'm very satisfied with the job,thanks very much

Peter

36 years of experience
346 reviews
Peter
36 years of experience
Mercedes-Benz SLK320 V6-3.2L - Car Battery Replacement - Phoenix, Arizona
Excellent service from Peter. Will ask for him again. Btw you have the wrong car listed. Tha SLK was my last car. Peter installed a new battery in my 2003 BMW 525i, which has the same license plate that I had on the SLK. Again, it wasn't a pleasure to do business with Peter and your company. . ...... . . ......

Carlos

25 years of experience
122 reviews
Carlos
25 years of experience
Mercedes-Benz SLK320 V6-3.2L - Pre-purchase Car Inspection - Pleasant Hill, California
Carlos is so amazing! He is very efficient yet thorough, and will tell you flat out whether or not he thinks it is a good deal. He gave me advice on smaller maintenance strategies, shared his knowledge of dos and donts, and helped me figure out some specific features. I also got to sit with him in the car while he drove it around, which I really liked. He explained what he noticed and felt, and why he was doing certain things. Having Carlos check it out made me feel much more confident in my purchase, and I felt a lot less nervous taking the leap. I plan on calling him back up down the line for anything I need. In the end, I was able to drive (not walk) away in an amazing 2003 Mercedes Benz SLK320. I really appreciate his help and advice.

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Number of Mercedes-Benz SLK320 services completed
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TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
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