Headlamp Delay

The headlight delay feature (also known as the Follow Me Home feature) includes the left (lighting) multi-function switch, the IPC and the BCM. The BCM controls this feature by monitoring inputs from the ignition switch and the left (lighting) multi-function switch. If within two minutes after the ignition switch is turned to the OFF position, the left multi-function switch control stalk is pulled toward the steering wheel and released the BCM energizes the relay that controls the headlight low beams and the high side driver that controls the clearance (position) lamps for 30 seconds. Each additional activation of the control stalk extends the delay by 30 seconds, up to a maximum of 210 seconds. The BCM automatically de-energizes the lamps after the selected time interval expires or, immediately, if the control stalk is pulled toward the steering wheel and held for more than two seconds. The BCM also sends the appropriate electronic messages to the IPC over the CAN data bus to control the Follow Me Home indications in the IPC display.