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Lane assist

S

SH0TI

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Joined
Aug 8, 2025
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4
After swapping the battery on my 2021 Trailblazer RS (41k miles), everything works fine except lane keep assist, forward collision alert and adaptive cruise, they've all stopped working. Lane keep says "service unavailable" and the collision button on the wheel does nothing. I think the front camera might need a reset, maybe by pulling a fuse, but I cant find which one in the manual. Anyone know how to get these features working again?
 
Same thing happened with my 2022 Trailblazer ACTIV after I changed the battery last spring. Lane keep and collision alerts stopped working. The dealer said the front camera just needed a reset. They fixed it in about 30 minutes using their scan tool, they didn't need to mess with fuses. Might be the easiest way to go!
 
jgrmyer33 said:
Same thing happened with my 2022 Trailblazer ACTIV after I changed the battery last spring. Lane keep and collision alerts stopped working. The dealer said the front camera just needed a reset. They fixed it in about 30 minutes using their scan tool, they didn't need to mess with fuses. Might be the easiest way to go!
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Good to know. Do you think the camera reset requires any special steps after the battery change, or can the dealer just do it right away with their scan tool??
 

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