How to disable the immobiliser BMW 7 Series ?

Your BMW 7 Series doesn’t want to start? Have you tested all kinds of things? Battery, alternator, spare keys… And you have the feeling that the trouble originates from your immobiliser ? It is quite possible, indeed that it is in question if your car no longer wants to start or stalls when starting without a reason. You want to disable the immobiliser on your BMW 7 Series ? You are in the right place, we have created this article to help you see more clearly and solve your trouble linked to this element. First, we will see how the immobiliser functions on your BMW 7 Series, then the different ways to disable it.

How your immobiliser system functions on BMW 7 Series

Before detailing the different choices available to you, here is a short intro to demonstrate the aim and functions of the immobilizer in your BMW 7 Series. This electronic element appeared 30 years ago and aims to prevent the theft of your BMW 7 Series. 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 BMW 7 Series will go each time you put 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 instant, 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 procedure, your key no longer enables your BMW 7 Series to start, you want to deactivate the immobiliser of your BMW 7 Series, but first of all you should try this technique to start it and take it to a mechanic verify that you can not execute a less significant procedure to bring back the normal start of your car. Actually, with your car you should have a spare key (which you should try and which should start your BMW 7 Series), but if you don’t have it you should at least have the “code card”, it contains 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, replicate the procedure until you have entered the entire code. This should allow your BMW 7 Series to start without having to remove the immobiliser.

Repair your key at a key specialist or your car dealer

If despite a battery swap, different attempts to enter the immobiliser code on your BMW 7 Series 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 BMW 7 Series. Actually, your transponder must have been weakened or must have fallen off your key. To fix this trouble, only solution, go to a key specialist (also available on the internet) or, at your car dealership who can repair your BMW 7 Series 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 BMW 7 Series.

Manually remove your immobilizer

Although you may be thinking to bypass the immobilizer from your BMW 7 Series, this is not recommended at all for some reasons. First your BMW 7 Series 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. Furthermore to that, your insurance, in case of theft most likely won’t refund you if it finds out that the immobiliser on your BMW 7 Series has been removed, bypassed or deactivated. This if you still want to do it, some internet pages still give the process, we have made the choice not to disclose it, because it could benefit people with bad intentions.

If you want more guides on the BMW 7 Series, go to our BMW 7 Series category.