Alarm going off for no reason

[donskibeat]

Today for no reason at all the alarm has gone off - twice - car just sitting in driveway, no one near it, no wind or anything else which could trigger it. Anyone else had this?

 

[Wonza]

Today for no reason at all the alarm has gone off - twice - car just sitting in driveway, no one near it, no wind or anything else which could trigger it. Anyone else had this?

Edit: title meant to say "for no reason" - not "for now reason" .... perhaps a mod could fix my typo for me please

Is your boot closed properly. Give it a good slam.

 

[donskibeat]

Is your boot closed properly. Give it a good slam.

Yes boot is closed fine, car has been parked up for a few days and not moved, and alarm problem only started today

 

[Kimmax]

Is the battery dying? I forgot to unlock the car before disconnecting the battery last time and was met with a alarm not being happy about that

 

[donskibeat]

Is the battery dying? I forgot to unlock the car before disconnecting the battery last time and was met with a alarm not being happy about that

Yes I did wonder that myself as car not moved for a while so have been out and started it up and left it running a good while to give battery a charge, will see if alarm goes off again now.

 

[Kimmax]

Yes I did wonder that myself as car not moved for a while so have been out and started it up and left it running a good while to give battery a charge, will see if alarm goes off again now.

You’ll probably want to run a few miles as idling won’t be charging the battery effectively I think

 

[donskibeat]

You’ll probably want to run a few miles as idling won’t be charging the battery effectively I think

Scorpion tracker app was showing voltage as 12.3v before and 12.6v after I left it running a while, so has made a bit of a difference. If alarm goes off again I will go for a spin instead

 

[Pugwash]

I am no expert but understand with an alternator, leaving it ticking over is just as efficient as going for a drive. Also being an AGM battery it charges at a different rate than a traditional lead acid battery. If you can, best is to keep it on an intelligent charger that knows about AGM batteries. I think you have posted previously that your car lives outdoors but others on this forum have indicated how they use these types of charger when the car is outside to give a degree of weather protection.

 

[Blackthought_]

Today for no reason at all the alarm has gone off - twice - car just sitting in driveway, no one near it, no wind or anything else which could trigger it. Anyone else had this?

You ever figure out what was causing this? I just had this happen out of the blue

 

[Raskits]

My mom had a Camry that was low on battery and alarm was going off randomly. fixed with new battery

 

[Granitedragon]

You ever figure out what was causing this? I just had this happen out of the blue

Bump ! Yes same here - had it twice now for no reason. Car is garaged and on a CTEK battery conditioner etc

 

[IRN_M8DEN]

Bump ! Yes same here - had it twice now for no reason. Car is garaged and on a CTEK battery conditioner etc

Without fail, my alarm will go off after 2 minutes and 30 seconds if I lock my car with the fob. It has done this since I took delivery (600 miles from the dealership).

 

[Granitedragon]

...that must be a right P.I.T.A! Commiserations. You don't even get the surprise of a random alarm

 

[virtualmacho]

Without fail, my alarm will go off after 2 minutes and 30 seconds if I lock my car with the fob. It has done this since I took delivery (600 miles from the dealership).

Is there something you have set to activate (or deactivate) at 2 minutes and 30 seconds? Something that might cause a drop or spike in voltage, like a dashcam switching to auxilliary battery?

 

[IRN_M8DEN]

Is there something you have set to activate (or deactivate) at 2 minutes and 30 seconds? Something that might cause a drop or spike in voltage, like a dashcam switching to auxilliary battery?

Nope. No dashcam or anything electronically added for that matter. My guess is, this is the time the car is programmed to initiate some sort of proxy or motion sensor and either the battery or sensor itself is faulty. I'm now in line for diagnostics, could be weeks before I'm called up though.

 

[Blackthought_]

Nope. No dashcam or anything electronically added for that matter. My guess is, this is the time the car is programmed to initiate some sort of proxy or motion sensor and either the battery or sensor itself is faulty. I'm now in line for diagnostics, could be weeks before I'm called up though.

When locking the car, what if you hit the lock button twice and disable the interior motion sensor? I wonder if that can eliminate one potential problem. If it still goes off, at least you know it may not be the interior motion sensor

 

[Kimmax]

When locking the car, what if you hit the lock button twice and disable the interior motion sensor? I wonder if that can eliminate one potential problem. If it still goes off, at least you know it may not be the interior motion sensor

Might be worth a try to reduce the motion sensitivity in the settings. If it stops going off you know where to search

 

[IRN_M8DEN]

Might be worth a try to reduce the motion sensitivity in the settings. If it stops going off you know where to search

Tried this, still goes off.

 

[Blackthought_]

Tried this, still goes off.

Ahh, what about the trunk? Have you ever gotten the red warning light that the trunk is open? Might be worth opening and closing it to double check. My trunk latch was faulty and my alarm would go off bc of it

 

[IRN_M8DEN]

Ahh, what about the trunk? Have you ever gotten the red warning light that the trunk is open? Might be worth opening and closing it to double check. My trunk latch was faulty and my alarm would go off bc of it

Nope. Keep 'em coming though. I appreciate the eagerness to help.