Your Mercedes Classe Cls doesn’t start anymore? Have you analyzed all kinds of things? Battery, alternator, spare keys… And you feel like the issue originates from your immobiliser ? It is actually quite plausible, indeed that it is in question if your automotive no longer wants to start or stalls when starting without a reason. You want to disable the immobiliser on your Mercedes Classe Cls ? You are on the good article, we have created this post to support you see more clearly and resolve your concerns connected to this part. First, we will see how the immobiliser functions on your Mercedes Classe Cls, then the different techniques to disable it.

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How your immobiliser system functions on Mercedes Classe Cls

Before describing the different choices available to you, here is a short introduction to demonstrate the role and functions of the immobilizer in your Mercedes Classe Cls. This electronic component appeared 30 years ago and aims to prevent the theft of your Mercedes Classe Cls. Actually, thanks to a transponder and an antenna (coil) integrated in the key, and, a immobilisation control box integrated in the ECU and a reception antenna on the neiman, your Mercedes Classe Cls will go each time you insert the key in the ignition, it checks that the code emitted by your key is indeed the one expected by your immobilization box. It is only at this moment, that it will allow you to start. It is thanks to RFID technology (chip in the key) that this device will work.

The different possibilities to bypass the immobiliser on your Mercedes Classe Cls

Enter the code to turn off the immobiliser

First methodology, your key no longer allows your Mercedes Classe Cls to start, you want to turn off the immobiliser of your Mercedes Classe Cls, but first of all you should try this technique to start it and take it to a garage check that you can not perform a less significant operation to reestablish the normal start of your vehicle. Actually, with your vehicle you should have a spare key (which you should try and which should start your Mercedes Classe Cls), but if you don’t have it you should at least have the “code card”, it includes the start code. Thanks to this code, you will still be able to start your vehicle by entering it manually. To do this, turn on the ignition, use your centralized button to enter the digits, several quick presses (example: 2 for digit 2) then a stop of one and a half seconds to confirm the digit and resume, duplicate the operation until you have entered the full code. This should let you start your Mercedes Classe Cls without having to remove the immobiliser.

Repair your key at a key specialist or your car dealership

If even though a battery change, several attempts to enter the immobiliser code on your Mercedes Classe Cls still doesn’t work, it’s almost certainly your key that’s at issue. We can understand that you still want to bypass the immobiliser device from your Mercedes Classe Cls. Actually, your transponder must have been damaged or must have fallen off your key. To correct this issue, only option, go to a key specialist (also available on the internet) or, at your dealer who can fix your Mercedes Classe Cls key. Determined by who you go to the repair should cost you about 100 euros if you still have a duplicate or your “code card” and about 350 euros at your dealer if you have no support and you want a new functional key, it will avoid you having to remove the immobilizer from your Mercedes Classe Cls.

Manually remove your immobilizer

Although you may be attracted to bypass the immobilizer from your Mercedes Classe Cls, this is not recommended at all for several reasons. First your Mercedes Classe Cls would be much more vulnerable to theft attempts. Actually, without an immobiliser box, simply doing “the wires” may be enough to turn your car on. Additionally to that, your insurance, in case of theft most likely won’t refund you if it knows that the immobiliser on your Mercedes Classe Cls has been removed, bypassed or deactivated. This if you still want to do it, some websites online still give the process, we have made the choice not to disclose it, because it could benefit people with bad intentions.

If you wish more tutorials on the Mercedes Classe Cls, go to our Mercedes Classe Cls category.