The problem is as follows. The battery has been discharging as it is not being used enough. He has had the battery off to charge it a couple of times. The most recent time, I took the battery off and put it on charge for him. He put it back on and took it out for a drive. When he got to mine the alarm horn was making an odd noise. Kinda like a grating and then a click, every second, as if the alarm was trying to sound, but there was not enough power in there. This sounds regardless of wether the car is locked or unlocked. The car starts straight away on the turn of the key.
We first tried disconnecting the battery positive. This stopped it, however once reconnected it started again. We then tried locking it, to arm the alarm, the disconnecting with the same result. We even tried to disconnect the alarm relay. This did not stop it however. The relay does not look like the other ones (see picture its the one on the far left of the picture-located under the drivers side fascia panel)
When I took the battery off for charging, the alarm sounded. I reconnected the battery, disarmed the alarm, left the car unlocked and disconnected. This time it came off without sounding. I then manually locked all the doors and the boot. I would assume all my old man did when reconnecting the battery was to unlock the boot and re-attach.
My theory: The internal power source for the alarm discharged itself while the battery was disconected and is trying to sound the alarm. Any suggestions, ideas? Can this be replaced/recharged?
