Circuit/System Description

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

When the park assist, lane keep assist, or forward collision alert system detect a possible collision, the safety alert seat pulses on the left, right or both sides of the seat to alert drivers to the direction of the possible danger. The safety alert seats uses the P45LR Front Seat Lane Departure Warning Actuator - Left Rear and P45RR Front Seat Lane Departure Warning Actuator - Right Rear, located in the driver seat cushion, to provide haptic pulses. These are DC motors with an attached counterweight that creates a vibration when active.

On vehicles with RPO A45, the K40D Driver Seat Adjuster Memory Module controls the P45LR Front Seat Lane Departure Warning Actuator - Left Rear and P45RR Front Seat Lane Departure Warning Actuator - Right Rear. Each P45 Front Seat Lane Departure Warning Actuator receives a constant ground on circuit 2150. The K40D Driver Seat Adjuster Memory Module controls each P45 Front Seat Lane Departure Warning Actuator by applying a PWM voltage on circuit 3037 for the P45LR Front Seat Lane Departure Warning Actuator - Left Rear or circuit 3038 for the P45RR Front Seat Lane Departure Warning Actuator - Right Rear.

On vehicles without RPO A45, the K9 Body Control Module controls the P45LR Front Seat Lane Departure Warning Actuator - Left Rear and P45RR Front Seat Lane Departure Warning Actuator - Right Rear. Each P45 Front Seat Lane Departure Warning Actuator receives a constant ground on circuit 2150. The K9 Body Control Module controls each P45 Front Seat Lane Departure Warning Actuator by applying a PWM voltage on circuit 3037 for the P45LR Front Seat Lane Departure Warning Actuator - Left Rear or circuit 3038 for the P45RR Front Seat Lane Departure Warning Actuator - Right Rear.