Help!! Won't start Won't crank over
 

Won't start went into store game out to car off an won't start stays in Acc an On position an the break pedal is locked in at the maximum pushing pressure an just flashes key on the dash other than that no lights iv replaced the fuze box connected to the battery an still same issue any ideas?

Flashing key means the intelligent key system (push to start) no longer recognizes your key fob. Probably just need to have a locksmith reprogram the BCM to accept your fob, but sometimes it's as easy as putting a NEW BATTERY IN THE FOB.

If the fob battery did die you can literally hold the fob on the start button while you try to start the car, the shorter range RFID chip will be picked up by the NATS antenna on the start button.

Also, I would put the old IPDM back in since there probably wasn't anything wrong with it.

. (Iv replaced the key fob battery with 3 others all work perfectly fine before it died it threw a code for catalytic converter not fs if that would cause the break to lock into position an the car to refuse to start an go into gear an to stay in the Acc an On position but not start tells me to press brake but the brake is already at maximum pressure so it can't be pressed anymore iv disconnected the battery for awhile an still nothing iv replaced the fuse terminals connecting to the battery bc some people were saying that could be it still same issue)