I just got my truck back from being serviced at my dealer. As I always do I returned it to stock before i dropped it off. So i just picked it up and when i was trying to load my custom tune it would not let me change my tire size ( Just upgraded from 235's to 35" tires) in the menu. It has never done this before and now its saying code F1 call tech support. Is there a new update that im unaware of or something?

 

try unpluging it when its on and pluging it back in

 

I started to get that F1 code when trying to change settings. After talking with a few folks on here turns out my Battery was going downhill. MUD DIGGER is right though unplugging the cable should correct it and maybe it is just a one time thing but if it keeps happening you might want to get your battery checked out. I replaced the battery and no trouble since.

 

Mud Digger's advice is correct - leave the ignition key ON, unplug and replug the Gryphon back in. Also, I like what ab46501 told you. If you have any possibility of a weak battery, DO NOT try to program the PCM. There is a chance the process could fail partway through the programming process, leaving the program in the PCM corrupt. This could put you in a no-start condition.

Good posts, guys, both of you!

- Jack

 

alright, i emailed corey and bill and they said i have to check my hex code and see if it has changed. But i thought if you returned your truck to stock and they reflashed it it wouldnt do anything?? Is there anyway to check the strength of my battery?

 

If your PCM has been reflashed and you have custom tunes, they will have to be completely rewritten. My guess is, though, that your PCM was not reflashed. But, if you did not return your truck to stock before the reflash, you'd also get to pay to have the programmer returned to "stock", so that it could accept the new tunes. I've heard also that there is a possibility that a reflash of a PCM that is not at stock could destroy the PCM and force you to replace it. Personally, that doesn't make a lot of sense to me and I doubt it is true.

Stores like Autozone will do a free "load test" of your battery.

- Jack

 

in my experiences these programmers are very touchy when our battery's start to go. also and forgive I'm not trying to be a smart a$$ but do you have a voltometer on your dash cluster? check it for fluctuations when starting and using accesories. aside from that have te battery chaecked as suggested by our powerhungryperformance guru! LOL

 

alright just checked my hex code it has changed DAMNIT... Corey said they will have to be re-wrote with the new HEX code. Looks like im gonna order a new towing tune as well while im at it. Thanks for the advice guys

 

Next time you take it in make sure they know not to reflash it. I get kinda stern when I tell them. I also make them put it on the work order.

 

I did not know that they could or would change the hex code if the dealer reflashes your PCM. With the luck I have been having they did this to mine when I had to get it reflashed to get the truck running again and now my Gryphon is on the way back to me with my old hex code and custom tunes.

This would have been good to know months ago so it could have been checked in advance of sending my Gryphon back for warranty work but at least now I will know why my tunes won't load. I am crossing my fingers they did not change my HEX code. Thanks for posting this verifine-f-150.

 

Best thing to do is put a big **** post it on your steering wheel that says "Do Not Reflash With Out Customer's Permission!".
While you're at it, order a red or yellow plug from PHP to put in the OBDII connector port.

Peace!

 

I had to get mine reflashed so it would run again. I have a whole thread going on about that (Gryphon users! Am I Screwed?). I just had no idea that the HEX code could be changed. I thought that was a constant, like a serial number for your PCM. Like I said it would have been a good thing to know a couple of months ago.

 

Checked the battery guage while driving around at lunch time cranked all accessories and everything and the guage was still pointed right in the middle so i dont think this issue was caused by low voltage IMO. Waiting to hear back from PHP

 

The hex code is the version of program in your PCM. If you get reflashed you get a new hex code.

 

Great so there is zero chance that the Gryphon will load my tunes when it shows up. This just gets better and better.