My 2018 CX5 recently had a dead battery, so I jumped it with a portable starter. Now the Lane-Keep Assist and Emergency Breaking systems are not working. Lights are on in the dashboard for both systems and when I try to re-activate them with the button next to the steering wheel, nothing happens, although when I hold the button long enough, the lights will go off, and a new message says "Front Camera Sensor System Malfunction" appears in the dashboard.

Any clues on what could be causing the issue? Is there something that should be reset when the battery dies/gets replaced?

Thanks in advance.

UPDATE: The issue is now fixed. I brought the CX5 to the dealer, and they wanted to charge $200 for a diagnostic, so I decided to check for DTC codes first. I bought a $30 cable to use with FORSCAN, deleted the stored DTC codes (which were related to a low battery voltage), and reset the FSC module. Then I performed the dynamic aiming of the camera function in FORSCAN. After 10 minutes of driving it, the issues were resolved, and everything is working again. Thanks to those who replied.

 

Check for blown fuse or fuses.
Other than that, you may have fried a component.

 

Thanks for your reply. The fuses are good. I just checked them all. Maybe the forward-sensing camera went bad?

 

I know it's a long shot, but it is possible some module just powered-up badly during the boost. If you haven't tried this already, it' may be worth a try to disconnect & reconnect the negative terminal from the battery to reboot everything, leaving it disconnected a few minutes before reconnecting.