What is the problem with my mobiliser, it doesn't function at all, I tried to change the battery , but no results

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when you lock it up does the alarm activate you say this problem only started after changing battery sounds like its the mobiliser lock and open car from inside with key in ignition hope this helps

WIRING HARNESS PROBLEM SWITCH PROBLEM OR COMFORT ECU PROBLEM..FOR MORE LET ME KNOW

there is a chance that it is a battery backup alarm, usually run by a few batteries.

The first thing to do is replace the battery in the remote, if it still doesn't respond you may need the remote programmed again.

The problem is that your battery is extremely low. The repeated clicking sound is your starter relay trying to engage, then releasing again when the starter takes the remaining voltage available to try to turn. When the relay disengages, the starter can no longer take any voltage at all, so the relay again engages and the process starts over. This results in "CLICK, CLICK, CLICK, CLICK...." There simply is not enough power available to operate both the relay and the starter.

Your alarm system doesn't have enough voltage to function properly. It "thinks" that someone is trying to steal your car or is messing with your battery cables. It doesn't know the difference between low voltage from a dead battery and low voltage from somebody disconnecting wires. It is simply responding to the low voltage condition as it is designed to do. Fix the voltage problem and you will fix your security system. No need to reset anything.

Jump-start the car or replace the battery and get your charging system checked to make sure everything is functioning properly. It is possible that the battery is good but you have a bad alternator and the battery is low because it is not being charged.

Sounds like the battery went dead in the remote. Usually there will be a slot on the remote you can stick a coin in and pry the back off, allowing you to change the battery.

If you have other key try it. If it still doesn't work the immobilizer has a problem. If you deactivate it anyone with a copy of your key can put it to work. Be sure of what you do.

imobiliser most likely cause get it tested
alarms & mobilisers are not a good combination as you can have them in conflict with each other!

it may have some lose wirings thats why its not responding, try checking the cables or the connectors of the alarm. if its all intact then you may need an alarm replacement. hope this helps.