Hi, when I turn the **** to 4 wheel high or low, nothing happens. It doesn't go into gear, nor any lights come on. This started happening a few days ago without any apparent reasons. Fuses look okay. Any ideas what causes this?

2005 F150 supercrew XLT.

Thanks -

Mike

 

Not familiar with the electronic shift - but sounds like it's time to scrounge up a wiring diagram and a multi-meter, and get ready for a divide-and-conquer mission.

 

disconnect the battery for a few seconds then try it. mine has done this a few times and resetting has always worked for me

 

Good suggestion, but it didn't work, though. I tried it.

Any other suggestions? Does anyone know how to test the relays located in the engine compartment?

 

I took the truck to a mechanic yesterday. He fixed it by jiggling an "electrical box". He didn't specify which one and I didn't ask.

They didn't even charge me for it.

So it's working now, you can hear the relay click and the drive slip into gear when the **** is turned to 4x4 high.

Mike

 

i'm guessing it was the vacume box on the front diff probably, glad its fixed

 

Does anyone have more info on what to do to correct this. And of equal importance what is the culprit of this problem. I just turned 37K miles and it happened to me for the first time...

The exact same thing happened to me yesterday. I went to back out of my dirt driveway and found that my rear wheels were spinning and my front tires wouldn't engage. I looked at the dash and noticed that the 4x4 light wasn't on. I couldn't get it to go into 4x4 high or 4x4 low.

Of course I was in a spot where I needed the 4wd and ended up having to get towed up the driveway with a friends truck...at least it was a Ford that towed me out.