truck wont shift out of park- update
 

Hi Folks, this update is to the post from 5-16-17, im really confused now, as mentioned in my other post the turn signal indicators sometimes are illuminated and the truck will not shift out of park, usually after driving and a quick stop at the store the turn signals illuminate at restart and no shift from park. Following is what i have.
1. Normal start, all exterior lighting works normal.
2. With turn signal on and flashing, turning on blower fan causes both turn indicators on the cluster to be on steady and no flashing on exterior lighting and no shifting from park. Turn off fan and back to normal.
3.With turn signal on and flashing, turning head lights from auto to on, same as above.
4. If i plug my cheap code reader in, both above problems do not apply and all systems are normal, dont want to drive this truck around with my code reader plugged in all the time. Also there are no codes.
This truck is a 2004 with 90,000 miles and i bought it right because the local dealership told the owner he needed a new engine at 85,000 because of that horrible rattle. Thanks to this forum i replaced all chains, tensioners, guides and phazers, and it runs so quiet you cant hardly hear it running.
Any ideas on my issue would be greatly appreciated

Check the shifter cable attachment under the truck on the driver side of the transmission. It may be only partially connected.

You've lost a ground somewhere, I'm almost certain of it. I had a very similar situation several years ago with a GM product. I'll go out and look at my son's '05 later and try to give you a few of the key ground junctions to look at.

Hi PerryB that makes sense, ive looked over the obvious grounds on the firewall and fender wells also crawled under the truck looking there, thinking a ground wire might have loosened up from when the timing components were replaced last summer, all check ok so far. i guess i need to locate a wiring diagram to see if there is a common ground for the lighting and fan blower because operation of either system seems to cause the problem. let me know if you have any ideas. Thanks again

Does the fan blower motor work on all 4 settings ?

Fan motor works on all 4 settings only with code reader plugged in otherwise its inop. also noted with blower on 4 the radio lights go out. gotta be a ground somewhere. Thanks Techrep

I was thinking about the blower motor resistor maybe shorting out causing problems.

To back up what was mentioned above about your shifter not working, get underneath your truck and look at the shifter cable, the plastic grommet could be broken that connects it. Any local auto parts store has a small package with several different size grommets to replace

2004 ford f150 with same issue
 

My 2004 ford f150 is doing the same thing. If I start the truck and turn on the fan vent selector switch, my radio lights turn off, both turn signals light up solid, and the truck wont shift into gear. If I turn off the selector switch, three seconds later I hear a click in the fuse panel on the passenger side floor and I can shift again. If I'm driving and turn on the fan selector, activating my turn signals will make my radio lights flash and my high beam indicator to turn on.

I had an issue with my old '04 FX4 not being able to shift out of park. I replaced the brake switch on the steering column, that didn't solve it. I ended up keeping the plastic off the steering column and disconnecting the shifting cable that connects to the transmission and shifted using that until I figured out the problem. My problem is that a fuse would blow every time I used cruise control and the brake switch was connected to that fuse. The solution was even more unrelated than the cause and symptom... all I had to do was replace an inexpensive part on top of the engine (I don't remember what it was). I can look it up if you're interested.

You have a bad ground. Pull the kick panels and inspect for body rot.

Found body rot!!
 

So I had this same issue start happening to me today my turn signal lights on the dash illuminated randomly and were solid not flashing also couldn't use my signals my highbeam indicator was also illuminated but they were not on and my blower motor stopped working put my truck in park and then it wouldn't come out I pulled up a wiring diagram for the blower motor circuit and found that the area around the ground by the passenger kick panel under the junction box was rotted so I was just wondering if any of you have had the same issue and had to relocate this ground any help would be appreciated

I had this exact issue. I just relocated that ground you are talking about and made a solid connection behind the dash to bare metal. Sure enough it seems to have fixed my issue. I will report back tomorrow after driving a bunch

Truck won't shift out of park - bad ground issue
 

Just thought I'd "ditto" on the ground issue on my 2004 F150.. Mine began with the "can't get out of park" and "solid dash lights, no turn signals" symptoms. Initially, I DID replace the shifter interlock as it was a cheap place to start (under $20) and was the first symptom. After replacing it, I still had the problem. I then happened to check the voltage on the 12v power plug on the dash and found it was at 4v. I pulled fuses to isolate the circuit causing the problem and when I pulled F13 (EATC), the voltage popped back up to 12v, and the interlock worked... but only with the lights off. Turning on the headlamps caused the voltage drop again. Sensing it was probably the "rotted ground" problem, I pulled the passenger kick panel and the ground screw came right out in my hand. I cut the wires off of the rotted terminals and installed new ring terminals (3). I used my angle grinder to scrape the paint off an area on the sheet metal between the slots where the kick panel attaches and used a self-threading screw to attach the 3 ring terminals to the sheet metal cab frame. This area is very close to the old attachment point so the wires had no problem reaching and it is very accessible for a drill and socket to get to instead of crawling around under the dash. Very easy fix, started it back up and all issues resolved. Here are some pix.
https://cimg0.ibsrv.net/gimg/www.f15...121396b8e9.jpg
This is where G202,G203 & G206 attach to the RH A pillar, next to the CJB.
https://cimg3.ibsrv.net/gimg/www.f15...15d2b57a66.jpg
Screw, terminals along with the sheet metal (or what was left of it) came out as soon as I grabbed it.
https://cimg1.ibsrv.net/gimg/www.f15...7af5a9b7ac.jpg
The hole is where the ground stud WAS located. Ford couldn't have picked a worse spot for the ground attachment.
https://cimg6.ibsrv.net/gimg/www.f15...7d21ce2c89.jpg
New area on the A pillar scraped bar and a hole prepped for the new ground stud.
https://cimg9.ibsrv.net/gimg/www.f15...eff2d341fa.jpg
Old terminals cut off and new ring terminals crimped on.
https://cimg9.ibsrv.net/gimg/www.f15...a641eefd2d.jpg
New grounds attached to the A Pillar.

Same problem
 

I have a similar issue. I have a 2004 F150 with 199640 miles - still runs great. It just started having an issue with the column gear lever shifting out of park. I've checked the fuze (14) its good and replaced the brake pedal switch. I have brake lights but it still won't shift out of park. I tried putting a small screwdriver into the little hole under the sterring wheel and pushing up gently but it does't work. Someone said its the solenoid . I would appreciate any ideas you may have.

Since you only have a single (reported) symptom issue with the brake shift interlock (BSI), this isn't a relevant thread for you. Go read this one and watch the video linked - https://www.f150forum.com/f4/column-...k-park-525585/ The intitial symptoms is the same although the resolution may end up differently.

Wont shift out of park.
 

My truck is doing the same thing. wont shift out of park, outside lights work, no blinkers, blinker indicators are on, and no air blowing when A/C or heat is on.