Why does the dash lights stay on even if the car is locked 2011 focus st will it drain the battery?

If the dash lights on your 2011 Focus ST stay on after the car is locked, it could indicate a malfunction in the electrical system or a failure to fully power down. This issue could potentially drain the battery over time if the lights remain illuminated for an extended period. It's advisable to have the vehicle checked by a mechanic to identify and resolve the underlying problem to prevent battery drain.