roledan

Hello I am having an issue with my 2003 F-150 Supercrew. It has the Karr alarm system installed by the dealer. Recently the truck will show that a door is ajar or open when they are all closed. I have gone around and made sure all doors are securely shut and the "door ajar" light will stay on. When you leave and try to lock the truck with the remote lock the horn honks like a door is open and won't lock. Any ideas what may be causing this? Thank you in advance for any advice.

torkum

Spray inside the door latch with WD40 and that should take care of it. The sensor gets dirty.