Having a vehicle is beneficial, we often need it to get to our job and for almost all of our daily trips. This important part of our annual budget recurrently causes us surprises, being conscious of oil leaking on your car is one of them… In reality, an oil leak is not usually benign and can quickly lead to the breakage of your engine if you don’t recognize it. If you are conscious of oil leaking on your Mercedes Benz CLS Class, you have come to the right place, we will first support you to discover the source of the oil leak and, secondly, we will help you to remedy it, when possible.

fix-oil-leakmercedes-benz-cls-class

Identifying the origin of the oil leaking on your Mercedes Benz CLS Class

If you observe fluid leaking from under your Mercedes Benz CLS Class, the first move to make is to verify all of your levels (power steering, engine oil, brake fluid, coolant) to see if any of them can promptly be identified as the origin of the leak. To limit the risks, it is really necessary to verify your levels every 2 weeks to avoid any risk of engine breakage.
In our case we will only be interested in case you detect oil leaking from your Mercedes Benz CLS Class, as far as engine oil is concerned, the liquid will be quite viscous and in shades of brown to black and if it is gearbox oil, it will be rather in amber tones and will have a strong unpleasant smell.
It’s not always easy to discover the source of the oil that leaks on a Mercedes Benz CLS Class because of the accessibility of the engine block, however here are the guidelines to follow to discover the source of the oil:

  • Locate the point where the oil falls, the spot from which it leaks onto the floor…
  • Track down the path of the dripping oil to its source, if the blot is too important, don’t think twice to clean the engine block and drive to have the ability to find out it more easily.
  • That will help, here is a list of the parts that most of the time provoke oil to leak from a car: the drain plug and its seal; one of your crankcase gaskets; the oil pressure switch; the oil filter; the transmission drain plug; the transmission sealing rings.

When possible, fix the part that brought on the oil to leak on your Mercedes Benz CLS Class.

Now that you’ve found the source of the oil leaking, it’s time to get down to business. Of course, for a while, you’ll be able to add more oil to top up the level, according to its seriousness, but bear in mind that this is not a long lasting treatment and that the leak could get worse at any time. We are going to demonstrate you the repairs that we think you can perform on your own with some knowledge, tools and according to the accessibility that you are going to have on your engine. Whatever the case, you should know that after repairing an oil leak on a Mercedes Benz CLS Class, you will have to swap your engine or gearbox oil.

Oil leakage from the drain plug and its seal on Mercedes Benz CLS Class

In this scenario, the solution is quite simple, you just have to lift your Mercedes Benz CLS Class, when possible perfectly horizontal, remove your drain plug, drain your engine oil, swap your drain gasket, tighten the plug to the appropriate torque and verify the hot engine to make sure the leak has been repaired.

Oil leaking over from the oil filter of my Mercedes Benz CLS Class

In the case that your oil leak comes from your oil filter, you will just need to change it. To get this done, take a filter wrench, remove the old filter, making sure that the gasket does not stick to the engine, place the new filter and tighten it moderately. Same test, hot check if oil is leaking from your Mercedes Benz CLS Class.

Oil leaking from the pressure switch of my Mercedes Benz CLS Class

To conclude, if it is your pressure switch that is the trigger of your leak on your Mercedes Benz CLS Class, you can, based on its accessibility, reach it and swap it very easily. To get this done, set a drain tray under the part, disconnect the electrical wire, remove the part, quickly reposition the replacement pressure switch, clean the assembly and do a hot test to ensure that you no longer have any oil leaking from your Mercedes Benz CLS Class.

For any other type of leak, we encourage you to go to your auto mechanic because the repair will involve too much expertise and tools to be carried out serenely alone.

If you need more tutorials on the Mercedes Benz CLS Class, go to our Mercedes Benz CLS Class category.