You can install the sensor by hand, and once it is hard to turn, you can go an extra 1/2 turn using your wrench. It will help prevent the sensor’s seizing and makes it easier to remove it next time. It is recommended to apply anti-seize compound on the threads of the new O2 sensor. Install the new oxygen sensor, which we showed you how to buy online under under $100 in reverse order. Once you place the O2 removal tool on the O2 sensor, you must turn it counterclockwise to remove it. Place the oxygen sensor removal tool on your O2 sensor as demonstrated on the removed sensor. Start by placing the oxygen sensor removal toolon the old oxygen sensor as shown in the picture below. Step 6: Place the oxygen sensor removal tool on the old sensor. You pull on the clip and slide out the cable. The oxygen sensor cable will have one or two clips that hold the O2 sensor wire. Step 5: Remove the oxygen sensor wire from the clips. In some cases, you may see little tabs that you will need to press to be able to unplug the old oxygen cable connector. Separate the electrical connections by pulling them apart. Step 4: Unplug the oxygen sensor electrical connector. Once you remove the undercarriage cover, you should see the oxygen sensors. The engine undercarriage plastic (engine splash shield) is usually placed with several 8 mm plastic bolts or push pins. Most modern cars, including Mercedes-Benz, have a plastic cover under them. Step 3: Remove the undercarriage to access the Oxygen Sensor. The picture is shown with the engine removed, but you don’t need to do that to replace an O2 sensor ). Look at the picture below to locate the sensor that needs to be replaced. Which sensor would that be? There are usually four oxygen sensors on your Mercedes-Benz. Once you scan your car, you will get a fault code that directs you to the faulty oxygen sensor, for instance, Bank 1 Sensor 2. Step 2: Locate the defective oxygen sensor. You can see an example in the picture below. Your OBD II port, where you plug in the scanner, is located under the dash, usually right under the steering wheel. Here is the bestseller OBD 2 scanners on Amazon, and any of these will work fine. You will need an OBD scanner to get the fault codes. It is very easy if you have not used an OBD II scanner before. Scan your car’s ECU using an OBD 2 scanner. Still, to remove the upstream sensors, you will need oxygen sensor removal tool set. If you remove the downstream sensor, you may get away with using a wrench. Oxygen Sensor Removal Tool Removing the oxygen sensor from the exhaust pipe can be challenging, especially when there is little room between the oxygen sensor and the car frame or the engine. Click here to find the right sensor for your car on Amazon. If you go to Amazon, you will see that new oxygen sensors prices for Mercedes-Benz cars range between $30 to $80. New Oxygen 2 Sensor, which you can purchase online and save a lot. To replace the oxygen sensor (O2), you will need the following: Here we will show you the steps to replace an oxygen sensor successfully. Is the check engine light on because of a bad oxygen sensor? You don’t have to spend your life savings replacing a defective O2 sensor. Step-by-step instructions on changing the Oxygen O2 Sensor in your car.
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