Your Mercedes Classe M doesn’t want to start? Have you tested all sorts of things? Battery, alternator, spare keys… And you feel like the issue comes from your immobiliser ? It is actually possible, actually that it is in question if your vehicule no longer wants to start or stalls when starting without a reason. You want to disable the immobiliser on your Mercedes Classe M ? You are in the right place, we have made this article to support you see more clearly and solve your problems relating to this component. First, we will see how the immobiliser works on your Mercedes Classe M, then the different ways to disable it.

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How your immobiliser system works on Mercedes Classe M

Before explaining the different solutions available to you, here is a short intro to describe the aim and functions of the immobilizer in your Mercedes Classe M. This electronic part was invented 30 years ago and aims to prevent the theft of your Mercedes Classe M. Actually, thanks to a transponder and an antenna (coil) included in the key, and, a immobilisation control box included in the ECU and a reception antenna on the neiman, your Mercedes Classe M will go each time you place the key in the ignition, it controls that the code emitted by your key is actually the one required by your immobilization box. It is only at this instant, that it will let you turn on your car. It is thanks to RFID technology (chip in the key) that this system will work.

The different solutions to bypass the immobiliser on your Mercedes Classe M

Enter the code to turn off the immobiliser

First technique, your key no longer allows your Mercedes Classe M to start, you want to disable the immobiliser of your Mercedes Classe M, but first of all you should try this procedure to start it and take it to a mechanic verify that you can not perform a less significant operation to reestablish the normal start of your automobile. Actually, with your automobile you should have a spare key (which you should try and which should start your Mercedes Classe M), 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 automobile 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, replicate the operation until you have entered the whole code. This should allow your Mercedes Classe M to start without having to remove the immobiliser.

Fix your key at a key specialist or your dealer

If even though a battery change, several attempts to enter the immobiliser code on your Mercedes Classe M still doesn’t want to start, it’s most likely your key that’s at issue. We can understand that you still want to bypass the immobiliser device from your Mercedes Classe M. Actually, your transponder must have been injured or must have fallen off your key. To resolve this issue, only solution, go to a key specialist (also available on the internet) or, at your car dealership who can restore your Mercedes Classe M key. Based on who you go to the repair should cost you about 100 euros if you still have a copy or your “code card” and about 350 euros at your car dealership 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 M.

Manually remove your immobilizer

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

To discover more tips on the Mercedes Classe M, take a look at the Mercedes Classe M category.