Alarm constantly on, no power

[Aciho]

Hi guys,

I have a ~3 year old DS3. This morning the alarm started going constantly, and has been on ever since. The buttons on the key fob do nothing. There's absolutely no power to anything - no hazard warning lights, no emergency buttons, nothing. I've tried disconnecting the battery and pulling the fuse for the alarm - no change. Is there anything else you can suggest, either to fix it or just get it to shut up?

e: Ignore this, I'm dumb. Turns out that when the battery goes flat it sounds the alarm (until the battery drains completely).

[Hyperkev]

Lol.......

[Aciho]

I think I have that temperature sensor issue I've seen mentioned in a few places, and it's running the fan at full speed until the battery dies. Going to leave the battery unplugged overnight and hope it starts in the morning.

[Funky]

Welcome. The fan runs until your battery dies? How long does that take? You sure it's not your battery that's a bit dodgy? The fan would need to run for a considerable length of time to fully drain a healthy battery. From your initial post, sounds like your battery needs a prolonged charge with a good burn on the motorway.

[Aciho]

It could be the battery I guess. It had most of an hour on the motorway in the morning, and took ~3 hours to get to the point the alarm came on, then another ~2 until it died completely. I'll take it to the garage in the morning and we'll see what they say.