If you know for sure that the alarm is functioning correctly, but the key-fob doesn't operate - either the fob is faulty or the battery is flat. Replace the battery - if the fob operates the alarm, then the battery was flat. If the alarm still doesn't operate, then the fob is faulty. You can always test the battery with a multimeter - although you may have to dismantle the remote to get at the battery !
If the battery is dead the alarm will not go off
Are you talking about a standard keyless entry that comes with remote? Don't know. Was this alarm system a step up from a standard kind? That i don't know. ..
On my 96 Camry, there is a "kill" switch on the front left of the floorboard on the driver's side. If you switch it, it will deactivate the alarm. I don't know if that helps with this model though. Ignition key should be "ON" when you use the "kill" switch to de-activate .
To Reset the security system you disconnect the battery for 5 min then reconnect it. make sure you have your remote or access to the controls because the alarm will sound when the battery is reconnected. when it sounds hit the off button make sure you retighten the battery cables correctly and your good to go. You can also reset the alarm system by disconecting the power to the alarm it's self if you know which wires are for the alarm. There will be one wire that's constant 12v that's the one that should be disconnected, there is also a 12v switched that connects to your ignation wireing . This wire is how the alarm knows when your starting the van or turning it off.
so it could work
You open the remote and replace the battery.
If you are the owner you should know that if I tell you how, everybody will be able to disconnect the alarm of a z3 and your car will be vulnerable. So use the remote with the white buton.
coz the battery is low
if replacing the battery doesnt fix it.
I don't know but mine is doing the same think. Letg me know if you find out.
Its possible that the remote itself is just bad. or that maybe the car needs to be re-programmed with the remote. either way best place would be a Renault dealership. Another suggestion is to go to an audio / alarm installation shop as they have key-less entry and remote start systems they can install.
Remove the fuse.