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[IJH 1]

Ello.
 This is my first time on this site so I'll apologies now if you've heard this question and problem before.Ive looked through the site for relevant problem but their is 549 pages and I'm desperate.
Problem alarm keeps going off after @1hour after car has been parked. check all doors and bonnet closed windows closed ok. set alarm goes off again.have tapped closed bonnet switch as per other answers from alarm problems found on site.No idea.
question should the alarm still sound when when alarm has been deactivated via key fob ? and all doors open.,mine does.
when alarm in on or off mode and it is not alarming it makes what I would say were fault code sounds.
Does anybody have any idea as to what problem may be and is there a list of fault codes for omega alarms
Model in problem MV6 2.6 est 2002 plate

[dbug]

Duff power sounder? - disconnect.  Under skuttle drivers side.

[edit]There's a howto here -http://www.omegaowners.com/forum/YaBB.pl?num=1220198611/0[/edit]

[IJH 1]

Thanks dbug. Don't quite understand. Robbo states tape wires and refit sounder unit. Does he mean reconnect wires to sounder and then refit sounder, if unit duff why bother refitting.? Or does removing wire and letting alarm sound for 4/5 minutes run the internal battery flat therfore resetting sounder???

[dbug]

Thanks dbug. Don't quite understand. Robbo states tape wires and refit sounder unit. Does he mean reconnect wires to sounder and then refit sounder, if unit duff why bother refitting.? Or does removing wire and letting alarm sound for 4/5 minutes run the internal battery flat therfore resetting sounder???

No do not reconnect plug to sounder.  I guess he refitted sounder for "completeness" and taped the plug up for "safety".

[IJH 1]

Bit the bullet. now at dealer for diagnosis. just have to wait and see.
Another site states that it could also be voltage drop on main battery causing problem.either will be money.

[Andy B]

....
Another site states that  .....

There are other Omega sites?  :-?  :-?  :-?    

[IJH 1]

Yep. But this is the best so far.

[Andy B]

Yep. But this is the best so far.

 

[Richard A]

Interested to know what the 'dealer' had to say.
regards
richard a

[IJH 1]

So would I.Still waiting for dealer to start. been called saying there busy. drinking tea more like.

[IJH 1]

IT'S BACK. cost me £50. report says :
Investigate alarm keeps going off.Carried out data checks on alarm. Carried out actuator test. found alarm still activating.Turned off ultrasonics and further tested traced to be either within ultrasonics or ecu.
Suggested renewal of ultrasonics first as cheaper repair.
Actually got to speak to guy working on car. His first words were  "What a b***h of a job". He said he when on tester no faults found.reprogrammed system no faults but then alarm went off. stated that he spent 4 hours checking all door switches and sensors. only thing stopped alarm was switching off int ultrasonics. tried this for an hour and no alarm.suggested that this may be fault but also could be ecu.Asked about sounder unit stated all ok.
Well paid me £50 took car home parked hit the button got out locked car walked in. just got the kettle on then oops the alarms going off.
I've never heard such language from my wife.
reset alarm waited for a minute alarm went off.open car, opened bonnet found that they hadn't taken cable tie off bonnet switch which I had put there to close switch as a test.Been nealy 45 minutes now and no alarm. Bonnet still open. OOPs spoke to soon, just reset alarm.
Question is bonnet switch heat sensertive even when tied closed?
Could it be the ecu (ps where is it?). or is after all the sounder.
I'm of to take for a drive to some where open and pull the wires of the sounder then let it run flat. will advise later.    

[TheBoy]

unplug bonnet switch and test again (leaving bonnet switch unplugged.

[TheBoy]

btw, anyone compitent with Tech2 device can tell you why alarm goes off.

[TheBoy]

sorry, lastly, the alarm noise, is it horn type sound, or electronic sounder?

[MarkG]

I've got round mine this last week by unplugging bonnet switch which left me with just the flashing indicators when the alarm went off and so now I lock the driver's door by opening the back door, pushing the driver's button down and then locking the rear passenger door. Locks the car without arming the alarm (I think)