Flashing 4WD

[TuggerNutz]

I went to turn on terrain management for snow and the 4WD started flashing along 2WD. 4WD was flashing on the dash as well. The front axle was even flashing on the "off road" screen. The thing wouldn't engage either from a stand still or rolling. Checked out all of the fuses in the cabin and none are blown. The only mods I have are hardwired dash cam, fog lights, raptor lights. I tried looking at the 4WD tech manuals but they're messed up and can't open them. Anyone have this issue?

*Update it's fixed*
I was able to be seen which is great because we got more snow on the way. Here's the text copied from the ticket.
#1 - MISC: MISC (TYPE IN DESC)

CUSTOMER STATES 4WD WILL NOT ENGAGE HOOKED UP FDRS. SCANNED SYSTEMS FOR

CODES.RETRIEVED CODE B10B8 IN FCIM. CLEARED CODE AND RETESTED-PASS. PERFORMED DIAGNOSIS FOR 4X4.4X4 HI AND LOW FLASHING AND NO ENGAGEMENT. CHECKED FUSES 23,53 IN BJB. DISASSEMBLED BJB TO GAIN ACCESS TO FUSE 66 IN BOTTOM OF FUSE BOX. FUSES OK. CHECKED 4X4 RELAYS-OK. PERFORMED PINPOINT TESTS B, A, C, I AND BACK TO B.BROUGHT UP 4X4 PIDS. PIDS CHANGE WITH SWITCH. CHECKED CONNECTORS FOR CORROSION AND PIN FIT-OK.REINSTALLED CONNECTORS. TESTED 4X4 AND STARTED WORKING. ROAD

TESTED IN LOWER LOT AND 4X4 HI AND LOW OPERATING PROPERLY AT THIS TIME.DIAGNOSED CAUSE DUE TO PIN CONTACT ISSUE.

I tested it myself and everything works like it should.

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[P. A. Schilke]

I went to turn on terrain management for snow and the 4WD started flashing along 2WD. 4WD was flashing on the dash as well. The front axle was even flashing on the "off road" screen. The thing wouldn't engage either from a stand still or rolling. Checked out all of the fuses in the cabin and none are blown. The only mods I have are hardwired dash cam, fog lights, raptor lights. I tried looking at the 4WD tech manuals but they're messed up and can't open them. Anyone have this issue?

Hi Mike,

Not sure this will help from the owner's manual

Best,
Phil

 

[Danager]

I shift to/from 2wd/4wd twice a day to exit and enter my parking garage. There are times when it is picky, usually only of under load and trying to shift from 4hi to 2wd.

Did you get any warning on the display?

 

[TuggerNutz]

Thanks for your help guys. I'm going to have to take it to the dealership. I'm not getting any 4x4 fault on the display. It just flashes. And on the knob it flashes between 2H and either of the 4WD modes. Does it no matter if I'm trying to select via Terrain Management or just trying to select with the knob. I've done it from a stop, slow roll, and reverse a little bit.

 

[9zero1790]

Thanks for your help guys. I'm going to have to take it to the dealership. I'm not getting any 4x4 fault on the display. It just flashes. And on the knob it flashes between 2H and either of the 4WD modes. Does it no matter if I'm trying to select via Terrain Management or just trying to select with the knob. I've done it from a stop, slow roll, and reverse a little bit.

try stopping fully in drive on level even ground and pushing (turning) the selector knob to 4wd hi. it will flash a few times (less than a minute ) and then should have 4wd. some of my other trucks were picky about going into 4wd if any preassure or bind was on the wheels. if it just keeps flashing after trying that way then its a trip to the stealership something no worky. mine never has any fuss unless i try to get in low without stopping and going to neutral etc. which is required for low. 4wd high should be simple smooth turn of the dial even while driving. following the parameters of course.

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