Your Hyundai Sonata doesn’t start anymore? Have you analyzed all kinds of things? Battery, alternator, spare keys… And you feel like the problem emanates from your immobiliser ? It is reasonably plausible, in fact that it is in question if your automotive doesn’t want to start anymore or stalls when starting for no reason. You want to disable the immobiliser on your Hyundai Sonata ? You are in the right place, we have created this article to help you see more clearly and fix your concerns related to this element. First, we will see how the immobiliser works on your Hyundai Sonata, then the different ways to disable it.

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How your immobiliser system works on Hyundai Sonata

Before explaining the different solutions available to you, here is a short intro to show you the aim and operation of the immobilizer in your Hyundai Sonata. This electronic element came out 30 years ago and aims to prevent the theft of your Hyundai Sonata. Indeed, 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 Hyundai Sonata will go each time you place the key in the ignition, it controls that the code emitted by your key is in fact the one expected by your immobilization box. It is only at this instant, that it will enable 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 Hyundai Sonata

Enter the code to turn off the immobiliser

First process, your key no longer permits your Hyundai Sonata to start, you want to disable the immobiliser of your Hyundai Sonata, but first of all you should try this approach to start it and take it to a garage check that you can not do a less important process to reestablish the normal start of your vehicle. Indeed, with your vehicle you should have a spare key (which you should try and which should start your Hyundai Sonata), 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 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, repeat the process until you have entered the whole code. This should allow your Hyundai Sonata to start without having to remove the immobiliser.

Repair your key at a key specialist or your car dealer

If even though a battery change, several attempts to enter the immobiliser code on your Hyundai Sonata 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 Hyundai Sonata. Indeed, your transponder must have been damaged or must have fallen off your key. To fix this problem, only solution, go to a key specialist (also available on the internet) or, at your car dealership who can restore your Hyundai Sonata 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 Hyundai Sonata.

Manually remove your immobilizer

Although you may be attracted to bypass the immobilizer from your Hyundai Sonata, this is not recommended at all for different reasons. First your Hyundai Sonata 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 Hyundai Sonata has been removed, bypassed or deactivated. This if you still want to do it, some internet pages still give the methodology, we have made the choice not to disclose it, because it could benefit people with bad intentions.

If you want more guides on the Hyundai Sonata, go to our Hyundai Sonata category.