Some problems on our cars seem trivial but can be bothersome, such as a window that no longer goes down. Others, regardless if they are not critical, will obstruct you from using your car in a normal way, such as having a flat tire or having the fuel cap of your Mercedes Classe C stuck. You will no longer manage to fill your tank and therefore finally not be able to use your automobile. It is exactly for this reason that we have written this document to enable you find a rapid answer to your fuel cap problem so that you can use your car normally. To do this, we will first try to understand why the fuel cap of your Mercedes Classe C is blocked, and then, how to unblock it.

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Why is the fuel cap on my Mercedes Classe C stuck?

So let’s begin our document with the origins of your tank cap problem on Mercedes Classe C. We will try to present you the different triggers of a blockage of this one.

Fuel tank cap with locker stuck on my Mercedes Classe C

In the event your car is equipped with a tank cap with lock you will be in the most delicate scenario, because the locks of these caps can get gripped with time and prevent you from accessing the access of your tank. It is also possible that the lock of your tank has twisted and no longer responds to the key of your Mercedes Classe C.

Conventional fuel cap stuck on my Mercedes Classe C

Second cause, and the most basic, in the case of a classic tank cap that has no lock and is mostly protected by a closed fuel door, if you have blocking problems on this type of cap, it is mostly only related to a cap that has not been closed in the axis and the thread of the latter is therefore blocked.
<2>How do I unlock the fuel cap on my Mercedes Classe C?

Second part of our document, we will try to give you the different solutions to get rid of your fuel cap stuck on your Mercedes Classe C and let you to put petrol in your car. If you encoutering a fuel trap blocked on your Mercedes Classe C, do not think twice to read our document on this subject to unlock it.

Use some anti-seize agent to unlock your fuel cap of your Mercedes Classe C

First alternative and the one you should consider first. You have the possibility to unseal your stuck fuel cap, to achieve this you will need to use a WD40 anti-seize type product to lubricate the barrel of your cap. Don’t be reluctant to put some in quantity and wait a couple of minutes for it to take effect, and try again to open the fuel cap of your Mercedes Classe C. If it does not function, duplicate the process and let it work for a longer time.

Use the duplicate key to unlock the fuel tank lock of your Mercedes Classe C

As a second solution, you can try to use your spare key, which normally being much less utilized should more easily unlock the lock on the tank cap of your Mercedes Classe C. This may seem evident but in some cases it all comes down to small details. In any case, if you have been able to open your tank, we recommend you to buy a new tank cap to avoid getting stuck in this condition again.

Shake the key while trying to open the tank of your Mercedes Classe C

To finish , last method, you can try to play the key in the lock of the fuel cap of your Mercedes Classe C to facilitate the opening of it. In fact, if the cylinder is a little seized up or destroyed, it will unlock with less effort by moving the key in different axes at the same time as you try to rotate it.

If you wish more guides on the Mercedes Classe C, go to our Mercedes Classe C category.