I've got a 2000 omega with factory fitted alarm. Its had the daily 4 beeps since I bought 3 years ago. I decided not to replace the siren so have lived with the beeps until now. Recently the siren has started going off independantly of the horn/lights etc. (Maybe 4 beeps can mean other things as well as a dead siren battery) This even happens with the car unlocked!
The local dealer couldn't register a new siren to the system and estimates £400+ to fix the problem by replacing the alarm control unit as well as the siren. Is this a rip off?
I've yet to find a way of locking the car without activating the alarm. Can I disable the entire alarm system?
Anyone in the know or suffered similar?
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I've always understood the 4 beeps were to warn of the battery back up failing. Usual cause of false alarms on the Omega is the pin switch under the bonnet being out of alignment, but as it's still going off regarless of being set or not.... maybe not?
Why not just try replacing the back up battery, rather than a new siren and alarm control unit?
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Vauxhall factory fit alarms have the back-up battery integral with the siren - it's about £130 just to buy.
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Vauxhall factory fit alarms have the back-up battery integral with the siren - it's about £130 just to buy.
Sorry to resurrect an old post, but this may be of use to someone.
I'm assuming the Vauxhall factory fit alarm has the same siren throughout the range of their cars. If so, the following on how to change the batteries on an Astra siren:-
www.bramcote-ridge.org.uk/HowTo/powersounder.pdf
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My siren had been 'potted' ie, when the lid was prised off, the whole of the electronics and batteries were embedded in a hard black resin.
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I thought locking the door with the key disabled the alarm or something...?
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The garage tried replacing the siren with a new one but the alarm control unit could not communicate with it so there is a bigger problem than just the siren. I asked them to disconnect the siren completely and I'll see whether this upsets the main alarm system. No false alarms as yet.
I've discovered that the car can be locked without setting the alarm by locking the drivers door from the inside (lean over from the passenger side and push down the tab). This locks all other doors so you can then just close the passenger door with it already locked. The deadlocks are not engaged this way though.
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I've discovered that the car can be locked without setting the alarm by locking the drivers door from the inside....
Another way is to reach in from the rear offside door and press the drivers door button down, then close the rear door. You can also just turn the lock in the drivers door 45 degrees to the left and then return to the upright postion to lock the doors without arming the alarm or setting the deadlocks, which only happens if you turn the key through 90 degrees to the left. Not an ideal solution, but it will help you out in the short term.
I read last night in another forum that someone's Omega alarm kept going off due to the control unit getting wet. Not sure if yours is in the same place as a Cavalier, (behind the kick panel in the drivers side footwell - I think, but don't quote me) but it might be worth a look to see if yours is contaminated by water.
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I think the Omega alarm control unit is in the console between the front seats, under the 'oddments' storage bin, behind the rear passenger's centre air vents. Probably worth asking over on the "omega_owners" group an Yahoo.
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