Your Lexus ES doesn’t start anymore? Have you tested everything? Battery, alternator, spare keys… And you feel like the issue comes from your immobiliser ? It is actually plausible, indeed that it is in question if your vehicule doesn’t want to start anymore or stalls when starting without a reason. You want to disable the immobiliser on your Lexus ES ? You are in the right place, we have written this post to support you see more clearly and solve your concerns linked to this component. First, we will see how the immobiliser functions on your Lexus ES, then the different techniques to disable it.


How your immobiliser system functions on Lexus ES

Before describing the different alternatives available to you, here is a short intro to show you the intent and operation of the immobilizer in your Lexus ES. This electronic part was invented 30 years ago and aspires to prevent the theft of your Lexus ES. 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 Lexus ES will go each time you put the key in the ignition, it checks that the code emitted by your key is indeed the one asked 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 device will work.

The different possibilities to bypass the immobiliser on your Lexus ES

Enter the code to turn off the immobiliser

First technique, your key no longer allows your Lexus ES to start, you want to deactivate the immobiliser of your Lexus ES, but first of all you should try this approach to start it and take it to a garage verify that you can not do a less important operation to reestablish 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 Lexus ES), 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, duplicate the operation until you have entered the entire code. This should allow your Lexus ES to start without having to remove the immobiliser.

Repair your key at a key specialist or your car dealership

If in spite of a battery change, different attempts to enter the immobiliser code on your Lexus ES still doesn’t want to start, it’s probably your key that’s at issue. We can understand that you still want to bypass the immobiliser device from your Lexus ES. Indeed, your transponder must have been injured or must have fallen off your key. To fix this issue, only option, go to a key specialist (also available on the internet) or, at your car dealer who can fix your Lexus ES key. Based on who you go to the repair should cost you about 100 euros if you still have a duplicate or your “code card” and about 350 euros at your car dealer if you have no support and you want a new functional key, it will avoid you having to remove the immobilizer from your Lexus ES.

Manually remove your immobilizer

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

If you need more guides on the Lexus ES, go to our Lexus ES category.