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Tom M

Interior alarm active after unlocking using remote

Recommended Posts

This just started the other day on my 2011 S. When I unlock the car using the remote the interior alarm stays active and goes off when I open the door. If I unlock all the doors using a double-push the interior alarm shuts off and I can open the door with not problems.

I verified this by watching the indicator LED on the door while standing next to it. A single push unlocked the door and the light changed to a slow blink. Re-lock it and do double-push and the light goes out.
I checked for codes using the Durametric and the only thing to show up was (1538/602 & 1539/603) under the CAN section. These are the same ones I had when the head unit was out for repair about a year ago so I don't necessarily think they are related to the current problem. No other codes/faults were reported when running the Durametric short test and I cleared the faults last night.

I just reran the Durametric short test after driving in to work this morning and there were no failures. However when unlocking the car the interior alarm stays active with only a single press of the remote. A double press unlocks all doors and turns off the alarm. This is based on observing the indicator in the door.

Anybody have suggestions on what to check next?

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Some additional information...


I set the system to open all doors today at lunch instead of the driver's door first and it unlocks and disables the alarm just fine. I then reset it back to unlock the driver's door and the alarm stays active until the 2nd push.

My Durametric is not able to read the door module for some reason (never has so that isn't new) so I'm guessing there's an error there someplace. At least I've got a workaround for now.

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