astra h mk5 Alarm going off

[fone_junkie]

hi guys, twice on my astra mk5 h, 1.9cdti the alarm has had a mind of its own, after like driving it and coming into the house 20mins later alarm goes off, no lights flashing just the sound, so it happend again last night after my drive back from manchester, alarm went off . checked incase i left boot open, but all was closed. there was no flashing indicators. so today i checked for fault code and i found this in the "Rec section" fault code

2006 (6)|Astra-H|Body|REC (Rear Electrical Centre)

Read Info...
Identifier: 0x0109
VIN: W0L0AHL4868033992
System name: RZM INTEDIS
Part Number:13206758
Software version number: RZM 8.12/31
Hardware key number: H000001602
Alpha code: HF
Manufacturing date: 20050927
Software Freeze Date: 05.11.2004

Total number of fault codes: 2
B2955 - Invalid Data from Ultrasonic Module
(71) - Not present
B3916 - No Communication With Alarm Siren
(71) - Not present

so now i have cleared it, incase thats there from previous so waiting for error to come again.
i went to the mechanic told him he goes firstly make sure you got nothing hanging on your rear view mirror as that can trigger the alarm. so will do that anyhow, but i would expect the lights to flash if alarm did go off via someting moving..

anyhow toughts / comments / advise welcome

[astrasonly]

You should have a listing of reasons why the alarm was triggered,if you used tech 2. Check that out too. With the ultra Sonics. Check for damp between the headlining and roof by the roof lamps. There is a big black multi plug above the lights. Check there for signs of water / condensation. That plug has a smaller blue block connector in it this is your ultra Sonics. Don't worry about the second code, we get that type of code all the time. Only worry if it keeps coming back.

[fone_junkie]

Roof lining seems all good.. i did a google.. some astras alarm go off.. powersounder battery? maybe or the rear rec may need software upgrade...

Sent from my GT-I9300 using Tapatalk 2

[G1NG3R]

speak to pecky see what he can tell ya matey

[fone_junkie]

Alarm went off again today.. after a few mins of entering the house.. no lights flashing just the sound of alarm going off.. i msgd pecky didnt hear nowt as he may be busy

[fone_junkie]

Recheckd

Code b2955 b3916 same codes as previously..

[Adz]

Didnt want to start another thread but my astra alarm keeps going off randomly. Whenever it feels like it will just go off. Lights flash too. Any idea what it could be? [MENTION=4]Pecky[/MENTION]?

[fone_junkie]

Mine hasnt done it in a while... touch wood lol ( :what:looks outside)

how much do they cost? Easy for diy? If it starts to go off again

[ANT-VXR]

my vxr used to go off I found it to be the plunger under the bonnet wasn't closing right , ye postioned it and its been bang on since