How to disable the immobiliser Mercedes Cla ?

Your Mercedes Cla doesn’t start anymore? Have you analyzed all sorts of things? Battery, alternator, spare keys… And you have the feeling that the issue comes from your immobiliser ? It is quite 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 Cla ? You are on the good article, we have created this post to support you see more clearly and fix your problems connected to this element. First, we will see how the immobiliser works on your Mercedes Cla, then the different ways to disable it.

How your immobiliser system works on Mercedes Cla

Before explaining the different solutions available to you, here is a short introduction to demonstrate the role and functions of the immobilizer in your Mercedes Cla. This electronic part appeared 30 years ago and aspires to prevent the theft of your Mercedes Cla. Indeed, 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 Cla will go each time you put 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 moment, that it will let you turn on your car. It is thanks to RFID technology (chip in the key) that this unit will work.

First technique, your key no longer permits your Mercedes Cla to start, you want to disable the immobiliser of your Mercedes Cla, but first of all you should try this approach to start it and take it to a mechanic verify that you can not do a less significant procedure to bring back the normal start of your car. Indeed, with your car you should have a spare key (which you should try and which should start your Mercedes Cla), 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 car 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, repeat the procedure until you have entered the entire code. This should allow your Mercedes Cla to start without having to remove the immobiliser.

Fix your key at a key specialist or your car dealer

If in spite of a battery change, several tries to enter the immobiliser code on your Mercedes Cla still doesn’t work, it’s likely your key that’s at issue. We can understand that you still want to bypass the immobiliser system from your Mercedes Cla. Indeed, your transponder must have been weakened or must have fallen off your key. To fix this issue, only solution, go to a key specialist (also available on the internet) or, at your car dealership who can restore your Mercedes Cla 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 Cla.

Manually remove your immobilizer

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

In the event that you have any additional questions about the Mercedes Cla, do not hesitate to consult our Mercedes Cla category.