Locked Shift/Hillside assist

ELFRIEDA

MEMBER
2014 FORD FIESTA
4 CYL
2WD
AUTOMATIC
20,000 MILES

Aloha,

Yesterday, I noticed my back left brake light was out, my dad was helping me replace the bulbs after we changed both bulbs none of my brake lights worked. Then I go to move my car and the shifter is locked and "hillside assist not available" pops up on my screen. I went and bought a coder only thing I got back was the evaporator needing to be changed. So I went from having one brake light out to my whole car not being able to move. I know how to get the shifter unlocked but only temporarily.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,495 POSTS

Hello,

Can I ask if the bulbs are working after the replacement? because if they are not installed correctly it will cause issues. here are the instructions on how to replace the brake lights bulbs in the diagrams below. Also I have included the brake light wiring so you can see how the system works and which fuses to check.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If everything checks out it is probably the BCM that needs to be replaced but to be sure we can do the CAN scan.

https://youtu.be/InIlnsjOVFA

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

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