My truck thinks the door is ajar!?

d-selpowereddiebauer · Feb 17, 2013

Door ajar light on gauge panel and both cab lights stay on as if the door is open. They're both securely closed and the thumb wheel isn't turned on. Any suggestions?

02BigD · Feb 17, 2013

When I had the same issue, had to get a new GEM.

d-selpowereddiebauer · Feb 17, 2013

What/where is this GEM you speak of?

d-selpowereddiebauer · Feb 17, 2013

Anybody? Can't really go drivin around like this @ nite.

POWER-STRUCK · Feb 17, 2013

door switches may be dirty or bad. try spraying brake parts cleaner in the door latches and slamming the door a couple of times.
if this works plan on getting new door ajar switches!

Josh@DirtyDiesels · Feb 17, 2013

this happened on my 7.3 back like 4 years ago... sprayed some brake cleaner or wd-40 or something in there and it ended up going away for awhile.

d-selpowereddiebauer · Feb 17, 2013

Tried that just barely. No change. Lights still on.

Josh@DirtyDiesels · Feb 17, 2013

That worked for me. Happened a few weeks before I sold the truck so couldn't tell you how long it fixed it before but sounds like you have another issue

d-selpowereddiebauer · Feb 17, 2013

Ya. I'm lost.

02BigD · Feb 17, 2013

The gem is in the dash. The lights should go out after a mile or so of driving.

d-selpowereddiebauer · Feb 17, 2013

Where in the dash?

d-selpowereddiebauer · Feb 18, 2013

You were right, the lights did go off a block or so from my driveway, but the dash indicator is still on.

02BigD · Feb 18, 2013

By the hump. If you look on you tube, there are a couple of vids.

d-selpowereddiebauer · Feb 18, 2013

Guess I know what I'm doin tomorrow. Thanx, 02BigD!

MAC · Feb 18, 2013

Had a truck with this issue, did the WD-40 fix and haven't had a problem after.

OBS F350 · Feb 18, 2013

Buddies crew cab had the same problem on the left rear door. sprayed penetrating oil on the hinges and never has had a problem since. Where did you spray OP? I believe the sensor is in the door hinge so if you just sprayed the latch it probably wont help.