The immobilizer warning light on your Bmw Serie 1 do not turn off when you turn on the ignition on your car. Thereby you can't turn on your vehicle, and it really becomes embarrassing especially in the morning before going to work or driving the children to school. So you would like to know what to do for at least avoid using a convenience store and be able to drive your car to a professional. This is why in this article we will explain to you why the immobilizer warning light remains fixed on your Bmw Serie 1. Then according to your diagnosis, we will give you advices so as to try to réparer your concern.

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Why does the immobilizer warning light not go out on Bmw Serie 1?

What is the role of the immobilizer on Bmw Serie 1?

The immobilizer on Bmw Serie 1 turns out to be a safety mechanism allowing you not to start your vehicle without a authentication of the key.

Do this when you put the key in the ignition or while the card is identified in the vehicle, this will close the electrical circuit to be able to engage the car's battery performance of your vehicle. This will allow the immobilizer box who go communicate via the transponder coil, with the transponder of the key. This must allow key authentication. When the immobilizer unit fails to exchange with the key, in this case it will go into security mode Theft. This should cut off the power the engine so that it cannot start and the immobilizer warning light will be displayed on the console.

Depending on the year of your Bmw Serie 1, it is possible to have a traditional key or a card, but in all cases there will be immobilizer control whenever you want light up the car.

Faults caused by the immobilizer on Bmw Serie 1:

When you have a problem with the immobilizer, the indicator light could either stay fixed on the console either flash very quickly. Anyway in general you will also have struggling to light your vehicle. The seer will represented by a solid red circle. There are various reasons for it to snap into place after startup. This is why we will list you the various possible breakdowns which activate the immobilizer warning light.

Immobilizer warning light on Bmw Serie 1: Neiman or key issue:

The first thing to study is whether the key is still operational. Indeed, in the event that it has undergone a shock, it is possible that the latter is damaged. So we may think that she no longer manages to communicate with the car via the transponder in order to to authenticate. Or even quite simply that it is discharged.

This is why you need to verify using the second key of your vehicle, in case it works, then you will surely identified the origin of your dysfunction. If you do not have the second key, try to to change by your means the battery. When your Bmw Serie 1 is equipped with a card, you can also read the following tutorial for more details: Bmw Serie 1 card no longer works .

Otherwise when you have a lock, it would also be possible that the contactor has seized up, but in this case you should have struggling to insert the key inside the lock. For more details regarding your contactor concern, do not hesitate to consult the following tutorial: neiman Bmw Serie 1 problem

Immobilizer warning light on Bmw Serie 1: Problem of transponder coil or immobilizer unit:

Also, it may be that your car is failing to communicate with the key via the transponder coil. As we have explained to you when the identification is not confirmed, in this case the immobilizer function will engage to ensure the safety of the car.

Otherwise it is possible that the immobilizer box no longer works properly and therefore it does not allow power to the motor although the identification is correct.

Immobilizer warning light on Bmw Serie 1: Relay, battery or fuse issue:

As the immobilizer works thanks to the electrical circuit of your vehicle, in case a component like drums, relay or the fuse of centralization is damaged in this case this could trigger the activation of the immobilizer.

How to fix an activated immobilizer malfunction on Bmw Serie 1?

Concern for immobilizer repairable by you on Bmw Serie 1:

If you want to fix an activated immobilizer problem, we recommend that you start by check the condition of your battery. To do this you will need a voltmeter. Then connect the positive terminal with that of the battery and the negative terminal on the negative terminal of the battery. When you start your car, the voltmeter should display about 13 to 15 volts. If you want change the battery of your Bmw Serie 1, do not hesitate to read the following tutorial: Bmw Serie 1 battery change price.

Then in case the malfunction does not come from there, check the relays accessible at the car's fuse box. So take the opportunity to check the state of the centralization fuse. For the latter do not hesitate to go through the car's maintenance booklet. This will inform you about the precise location of the relay and the fuse dedicated to the immobilizer in the fuse box located near the battery. When one of them turns out to be damaged in this case do not hesitate to buy one of the same caliber and the change on your own. The handling will be rather easy.

Immobilizer concern which requires the intervention of a professional on Bmw Serie 1:

However in case you have to change the key, the transponder coil or the immobilizer box, we will have to go in your dealer garage with your registration card and an identity document, to certify that the car belongs to you. It should cost you a hundred euros regarding the replacement of the key.

To finish: a problem with the immobilizer could be caused by the key, the transponder coil or even a problem with the battery or the relay.

If you want to have other tutorials on the Bmw Serie 1, do not hesitate to consult the other pages on the Bmw 1 Series.