2002 F350 My auto headlights won't come on the dome light won't come on unless i turn it on at the dash and my door ajar light on the dash is on. Any one know where i start looking for this problam

 

First, make sure your latches aren't sticking. Spray a little WD-40 in them (hit all the latches) and work it in by opening & closing the doors a few times each.

The auto head lights work off a sensor in the dash by the defrost outlet (little black dome). You should be able to pop it up to make sure it's not disconnected or something. If it's connected, it might be bad -- not sure how much they are or how to test them though. Maybe try disconnecting it and re-connecting to make sure it's okay.

 

ya i did the wd 40 that didnt help it seems everything happend at once

 

Could be the VSM acting up. It controls all of those things, IIRC. It's behind the radio and a PITA to get to. And the dealer must program it to work with your truck... I'm trying to think of a way to test it, and am coming up blank. Maybe someone else will pop in with some suggestions.

 

Does anyone know how hard it would be for me to put the auto headlights in my 2001 truck?

 

I was having similar problems and it ended up being the sensor/pressure switch that senses when the door is shut. I was able to clean them with CRC electrical cleaner rather then replace them.

 

Does your radio cut off when you open the door? Does the keyless remotes work?

 

My vote is with Joe.... 2002; dome light screwy; door ajar lamp; headlamps..... Your autolocks on the doors probably don't lock at 5mph either.

Classic 2002 VSM problem.

 

Just checked my keyless remotes dont work and radio dont shut off after opening the door Not sure about it auto locking after 5 mph will check that tomorrow on my way to work Although every once and awhile it would auto lock maybe 10 20 min after driving on the highway

 

Okay -- your VSM is cooked. You can cut out a lot of labor costs if you have a decent dealer by doing most of the work yourself. I forget how much of it you can actually do, but for sure, the dealer has to program it. You might be able to get access to it, buy the part, drive to your dealer, put it in right there, then have them program it. That's what I remember, in my rusty steel trap of a brain...... LOL

 

OK thanxs guys i wonder if A/E would show a DTC for the Vsm

 

It throws some codes. . . but nothing that tells you its the VSM. However i agree. Definitely the VSM. They have to program it off of the VIN or give them the original one. I'm not even sure if they need the truck?
Timmy

 

They need the truck and the old VSM has to be hooked up.

I shopped around to get the best price I could at the time (Ed probably has a better price now). I removed the lower center of the dash to gain access to the VSM and screwed the new one in place while leaving the bad one hooked up and laying on the tranny hump. All the tech had to do was to read the old one (I believe they get data access through the OBDII connector), unplug the old, plug the connectors into the new and re-flash.

It was in the shop for less than 10 minutes and the suckers still charged me for an hour labor! At least I did not have to pay their price for the VSM.

 

Intresting ...................everthing works OK on mine except the doors locking when you start to drive.
I didnt even know I had that option.

 

The lock and unlock feature can be turned on/off. Its in the owners manual.