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Alarm sometimes beeps 4 times when unlocking the car, why?



  RB 182 with CUP packs
Hey Gang,

Hope someone can shed some light on this for me please?:eek:

My car sometimes beeps 4 times when un-arming the alarm & the first time you re-arm it, it'll beep 3 times.

The car is garaged over night, but the garage backs onto train tracks & only get this problem when the car has been parked in there over night.
I'm thinking could it be the heavy vibrations from the trains setting the alarm off or should I be looking for another reason for it?

I've never heard the alarm go off though.

Anyone got any insight on this they can share with me please?
 
  BMW M135i
If the cobra alarm i've got fitted is similar to the renault one then 3 beeps on locking means that either the doors, boot or bonnet are open. 4 beeps on opening means that the alarm has been triggered and the led by the gearstick will tell you what by iirc. Deffo right about the 3 beep door open thing though.
 
Copied from this post
http://www.cliosport.net/forum/showthread.php?t=108782

When you go to unlock the car if the indicators flash 4 times then you can be sure the alarm has gone off.

If the alarm does go off then if you look at the light down near the gearlever, as this will tell you what set the alarm off. It will continue to do this until you put the keys in the ignition and turn it to the ON position.

How to interpret the flashing light after the alarm has gone off.

1 Blink. Either the doors, bonnet or boot have been opened. The sensor for the bonnet is mounted down by the front headlight on the passenger side it's a commonly failing sensors it can get water in it and rust. If it is going off then you'll probably need a new sensor or attempt to take the present one to pieces, and fix it. The sensors on the doors are the normal ones used to set off the interior lights so if the interior lights work of the doors then these won't be at fault. The sensor on the boot is the same as the door ones and so if the boot light works then this sensor should be fine.

2 Blinks. Additional sensor triggered. This shouldn't be an issue on a normal Clio alarm as the only sensors are on the bonnet doors and boot and the volumetric ones. This maybe set of if an approved alarm installer has added the alarm not from the factory i.e. Motor point etc.

3 Blinks. Ultrasonic sensor triggered. These are the little sensors on the front door pillars. If this is the reason for them being set off then you can either turn them off (as written about above) or apply some of the other ways quoted above.

4 Blinks. Someone has attempted to start the car with the wrong key.

6 Blinks. Someone has attempted to tamper with the alarm system in some way i.e. cutting wires.

7 Blinks. Serial line error. This is a problem with the alarm unit itself best go to Renault or a Cobra installer to get them to analysis the problem.

Another problem with the alarm seems to be the cars habit to unlock itself randomly. Some friends and I have had this in the past you wonder if you did lock the car and maybe your to blame. Renault garages will have trouble finding the problem, as it's so random. The best fix seems to be to check the cars locked very time (after a bit it becomes a force of habit) and to get the earthling leads for the alarms and central locking checked as this seems to have stopped mine happening.

Another common problem is when you lock the car the alarm beeps 2 or 3 times.
Reason: The alarm system has received a signal from the vehicle ECU that the ignition is 'on' causing the alarm to beep. This signal is only received by the alarm for 3 to 4 seconds, after this time has elapsed the alarm stops beeping.

Solution: It can only be resolved at a Renault dealer. Ask the dealer to contact the 'Renault alarm help line' and quote reference
'RS+15'.
 


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