Curious about dealers, hex codes and tunes
 

I was reading through posts about how if you do not set your truck back to stock the dealership could really mess stuff up with a reflash. This part I understand. But it got me wondering, if they reflash the truck after it is set to stock, doesnt that change the current hex code? If it does then isnt there going to be trouble with the tunes? I dont really know because everyone I know with a programmer or code reader do their own work and never go to dealerships.

Yes if it was set back to stock and then got reflashed the tunes would not work, since the hex code would be changed. Then the only fix is for Bill to rewrite the tune(s) for the new hex code.

You can either make sure the service writer know's not to(or puts it on the file) not to reflash your truck without your consent. Or you could put a OBDII cover on that says not to reflash...or hope and pray :cheesy smile:

Mmk, thats good to know. But wouldn't something that says "DO NOT REFLASH" appear suspicous to any repair tech at a dealership? All the dealerships around here look for ANY opportunity to void warranty repairs, especially if they have to pay for it. But maybe thats just our area, who want to work in an open shop with 95+ temps and high humidity. lol

Well thats a choice and chance you will have to make and take.

OK, I'll keep that in mind when something gets messed up. Still do our own work if its possible, thats why I picked a programmer. A big reason was for code reading and tire/gear changes. Also do you know if the code reading part can be used on other 04-08 fords (we also have an expedition that had some trouble codes recently with fuel)?

Yes it would...but there is where the hope and pray option comes in.....hope and pray they don't reflash it lol.

haha, yeah but like I said, we try to not take our vehicles to shops or especially dealerships. I've got plenty of horror stories...but they all had the same ending, the service center regrets arguing with us.:evillol: LOL