How to disable the immobiliser Toyota Sienna ?

Your Toyota Sienna doesn’t want to start? Have you analyzed all sorts of things? Battery, alternator, spare keys… And you feel like the issue originates from your immobiliser ? It is reasonably plausible, indeed that it is in question if your vehicule no longer wants to start or stalls when starting for no reason. You want to disable the immobiliser on your Toyota Sienna ? You are on the good website, we have made this content to help you see more clearly and solve your trouble related to this component. First, we will see how the immobiliser functions on your Toyota Sienna, then the different ways to disable it.

How your immobiliser system functions on Toyota Sienna

Before detailing the different alternatives available to you, here is a short intro to demonstrate the role and functions of the immobilizer in your Toyota Sienna. This electronic part appeared 30 years ago and intends to prevent the theft of your Toyota Sienna. 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 Toyota Sienna will go each time you place the key in the ignition, it controls 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 allow you to turn on your car. It is thanks to RFID technology (chip in the key) that this device will work.

First technique, your key no longer allows your Toyota Sienna to start, you want to disable the immobiliser of your Toyota Sienna, but first of all you should try this procedure to start it and take it to a garage check that you can not execute a less important operation to restore 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 Toyota Sienna), 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 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 validate the digit and resume, duplicate the operation until you have entered the full code. This should enable you to start your Toyota Sienna without having to remove the immobiliser.

Fix your key at a key specialist or your dealer

If despite a battery change, different attempts to enter the immobiliser code on your Toyota Sienna still doesn’t work, it’s most likely your key that’s at issue. We can understand that you still want to bypass the immobiliser device from your Toyota Sienna. Indeed, your transponder must have been affected or must have fallen off your key. To resolve this issue, only option, go to a key specialist (also available on the internet) or, at your car dealer who can repair your Toyota Sienna key. Determined by 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 dealer if you have no support and you want a new functional key, it will avoid you having to remove the immobilizer from your Toyota Sienna.

Manually remove your immobilizer

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

Whenever you have any additional questions about the Toyota Sienna, do not hesitate to consult our Toyota Sienna category.