Turned the truck off while tuner was updating

So I had my truck running with the kids in the truck, and one of them started messing with the tuner. I got back in the truck not aware of what she did and cut the truck off. Now there's all sorts of lights on the dash and the truck will not even turn over. 2012 Ford F250 6.7. Tuner comes on and just says "Initializing Communication"


  • Do this:

    1) Disconnect the tuner from the OBD port and shut the key off.

    2) Disconnect all 4 battery cables, both positive and negative from each side.

    3) On either side, take the positive and negative cables and touch them together for about 15 seconds to clear any charge left in the lines.

    4) Leaving the batteries disconnected, fully charge both batteries as close to 14 volts as possible.

    5) Hook the cables back up, plug the tuner in and turn the key on.

    6) Select Diagnostics and erase any codes.

    7) Select Install Download and follow the all of the prompts on the screen EXCEPT for turning the key off. When the tuner prompts you to shut the key off and press continue, do NOT shut they key off. Simply press continue to bypass this step.

    Make sure you follow Steps 6 and 7.
  • You the man!
  • Glad it worked!!
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