Keeping an eye on your vehicle is important in the present day, in fact, if you do not do the minimum routine service of it, or if you do not consider signs of abnormality, you strongly risk to see your motor vehicle withering away. This is precisely the subject we are going to discuss in this article, one of the symptoms that most interferes with car owners is the key indicator light on Mercedes Benz S Class dash . To try to help you analyze this light, first we will see what this key light on Mercedes Benz S Class means, then in a second how to handle it if the key light is lit on Mercedes Benz S Class? .

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What does the key light on Mercedes Benz S Class mean?

So we start our content page with the meaning of a key indicator light on Mercedes Benz S Class dash , it may be that furthermore to the key you have the logo of a car next to it. Be aware that the most important action of this light is to tell you that it’s time to service your Mercedes Benz S Class , nevertheless, this light can also have other meanings, even dozens of them. To discover the source of this problem the best solution will be to run your Mercedes Benz S Class through the diagnostic too l, if you don’t know how to do this process, you can discover all the required information to conduct this act in our dedicated content page. We will try in the following list to give you the maximum information on the most important warning messages it can send you:

  • An oil replace conducted without resetting the indicator: If you have done your oil replace on your own, it is very likely that you have not thought of resetting the oil change indicator of your Mercedes Benz S Class, here is the process to do this small reset of the key light of your car.
  • Oil level problem: It is possible that the oil level sensor is indicating that the oil level is too low.
  • EGR Valve: Another opportunity is that the key light on your Mercedes Benz S Class is on because your EGR valve is dirty, frequently the case if you are driving short distances or not pushing the gears of your car.
  • Glow plugs: At last, the last and most common trigger of an orange wrench light on Mercedes Benz S Class is that your glow plugs are getting tired.

What if the orange key light on Mercedes Benz S Class is on?

We are now going to proceed to the second part of our content page and try to present you the solutions to each of the problems described in the previous part and therefore how to handle it if I see the wrench light on your Mercedes Benz S Class? To get this done, we will take turns answering each of the problems you may face:

  • Reset the drain indicator light: As we outlined before, a basic reset of the indicator light on your Mercedes Benz S Class will be enough to turn off the key indicator and restart it for a cycle of 10 000km or 1 year, see our content page to conduct this procedure.
  • Oil level problem: This is a very basic problem and the easiest to solve. You will simply have to examine your oil level, we recommend you to take the opportunity to check all your oil levels.
  • EGR Valve: In the case of a light that comes on because of the EGR valve, you will need to have the points of this fault code through the diagnostic tool. Once you are sure of the source of the problem, you can try to clean your car by pushing the gears (hot engine), in any other case disassemble and clean the EGR valve of your Mercedes Benz S Class, we done a tutorial to help you to do it. Otherwise, go to a mechanic and prepare to pay a few hundred euros.
  • Glow plugs: Finally, if your problem comes from your glow plugs, the process to change them is quite basic and you won’t need more than 40 euros worth of glow plugs.

There, you now know everything about the wrench light on Mercedes Benz S Class , we hope this content page has helped you solve your problem.

If you want more tutorials on the Mercedes Benz S Class, go to our Mercedes Benz S Class category.