Your Mercury Grand Marquis doesn’t want to start? Have you analyzed all kinds of things? Battery, alternator, spare keys… And you feel like the issue originates from your immobiliser ? It is reasonably possible, actually that it is in question if your car doesn’t want to start anymore or stalls when starting for no reason. You want to disable the immobiliser on your Mercury Grand Marquis ? You are in the right place, we have written this post to support you see more clearly and fix your trouble relating to this part. First, we will see how the immobiliser functions on your Mercury Grand Marquis, then the different ways to disable it.
How your immobiliser system functions on Mercury Grand Marquis
Before describing the different alternatives available to you, here is a short intro to describe the role and operation of the immobilizer in your Mercury Grand Marquis. This electronic part came out 30 years ago and aims to prevent the theft of your Mercury Grand Marquis. 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 Mercury Grand Marquis will go each time you place the key in the ignition, it checks that the code emitted by your key is actually 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 alternatives to bypass the immobiliser on your Mercury Grand Marquis
Enter the code to turn off the immobiliser
First methodology, your key no longer allows your Mercury Grand Marquis to start, you want to deactivate the immobiliser of your Mercury Grand Marquis, but first of all you should try this technique to start it and take it to a garage check that you can not perform a less significant process to bring back the normal start of your automobile. Indeed, with your automobile you should have a spare key (which you should try and which should start your Mercury Grand Marquis), 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 automobile 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 let you start your Mercury Grand Marquis without having to remove the immobiliser.
Repair your key at a key specialist or your dealer
If even though a battery swap, several attempts to enter the immobiliser code on your Mercury Grand Marquis still doesn’t work, it’s almost certainly your key that’s at issue. We can understand that you still want to bypass the immobiliser system from your Mercury Grand Marquis. Indeed, your transponder must have been injured or must have fallen off your key. To correct this issue, only solution, go to a key specialist (also available on the internet) or, at your dealer who can fix your Mercury Grand Marquis 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 dealer if you have no support and you want a new functional key, it will avoid you having to remove the immobilizer from your Mercury Grand Marquis.
Manually remove your immobilizer
Although you may be tempted to bypass the immobilizer from your Mercury Grand Marquis, this is not recommended at all for different reasons. First your Mercury Grand Marquis 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 realizes that the immobiliser on your Mercury Grand Marquis 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.
If perhaps you have any further questions about the Mercury Grand Marquis, do not hesitate to consult our Mercury Grand Marquis category.
