Intermittent Alarm Sounding When Vehicle Locked

[Mr Teddy Bear]

As stated in the title I've noticed the alarm and indicators flashing for no reason when parked outside my front door. In the past I have assumed a fly had set off the perimetric alarm while the sunroof was open.

Unfortunately this seems to be wishful thinking. I reset on the fob, only for the thing to sound off again almost immediately. Left unlocked, unlocking cancels the alarm, she rearms herself after a while and problem temporarily cured.

I seem to recollect a post referring to the very same problem and talking about a flat secondary battery in the alarm itself. Is this eyewash as everything on my CLK is very dead once the battery is disconnected.

Anybody got any idea's?

cheers

 

[television]

You will be needing a new siren sir, the batteries have expired

 

[Mr Teddy Bear]

Thanks Malc, is this diy or does STAR deed to reconfigure everything?

 

[television]

Plug and play about £80 from MB, nothing to set. you can just unplug the alarm siren if you wish and leave it at that