eidolon

I am having this crazy issue... has anybody ever figured out what is causing the alarm to false?

jhbrennan

Disable the interior motion sensor (procedure described in the owner's manual) and see if that's the culprit.

buddy911t

I've been having this problem. After 5 or six random alarms( only in the middle of the night, weird.), I took it to the dealer. "Sorry can't find any faults, duh, don't know what to do." The freakin thing still goes off. I'm pissed so I just leave it off at night and hope the low crime rate here holds.

ajayabb

I was never able to fix mine either. I just got used to double clicking the fob

Little Green

Sorry to resurect but the alarm is driving me nuts. I don't understand the double clicking. One opens the door the next one unlocks it. How do you double click or am I missing something

jhbrennan

From the manual -

If a person or animal remains in the vehicle:
f Quickly lock car twice.
The doors cannot be opened from the outside.
The passenger compartment monitoring is
switched off.

BHMav8r

Mine has gone off a few times on its own, not lately though.

One of my horns went out - common problem - not very expensive to replace. Big difference in sound.

vern1

Did you replace the horn yourself? I had my alarm go off a few times in the middle of the night and then the horn went out recentlly as well (well one of them still works but there must be 2 as the sound is pretty lame). One of the previous posts mentioned that there was some connection between the alarm going off and a short in the horn. Want to see if its easy to replace myself

Thanks

BHMav8r

I watched the mechanic do it. Looked pretty easy & straight forward

I watched him do it because they checked it off on the 20,000 mi service checklist but they missed it. I knew it was out because the mechanic at the previous owners dealership caught it immediately when he beeped the horn exiting the bay. I took it back when I read the checklist - wasnt happy.

They also left out the oil drain plug washer when they changed the oil & overtorqued the plug - I found this out when I DIY'ed the next oil change - I called the service manager just to let him know - I wont be going back.

PorscheCayenne08

Alarm in my 2008 cayenne went off randomly since I got it. Deactivating interior motion sensor only solved problem shortly. Truck would go dead if sit 2 days or more. Replaced battery no more problems. I had one used battery but didn't work new battery solved problem.