Description And Operation: Overview

The exterior lighting is controlled by the Body Control Module/Gateway Module (BCM/GWM). The BCM/GWM controls the following vehicle functions:

• Control and monitoring of exterior lamps including turn signal indicators and hazard warning functionality
• Communication and control and monitoring of trailer lighting via the trailer module
• Monitoring and evaluation of check control inputs from other system control modules and output of applicable messages in the Instrument Cluster (IC) message center.

The BCM/GWM is connected to the High Speed (HS) Controller Area Network (CAN) bus. The BCM/GWM contains a microprocessor which performs the control, monitoring and evaluation functions.

A combined rain/light sensor is fitted which controls the automatic wiper operation and the automatic lighting function.

An Auto High Beam (AHB) system can also be fitted which automatically controls the high beam headlamps.

All exterior lamps are Light Emitting Diode (LED) apart from the Xenon headlamps.

The exterior lighting system comprises the following exterior lamps:

• Front and rear side lamps
• License plate lamps
• Side marker lamps (if fitted)
• Front and rear turn signal indicator lamps
• Turn signal indicators side repeater lamps
• Stop lamps and High Mounted Stop Lamp (HMSL)
• Reversing lamps
• Rear fog lamps
• Front fog lamps
• Static bending lamps (if fitted - Adaptive Front lighting System (AFS) headlamp except (North American Specification (NAS))
• Low and high beam headlamps
• Adaptive Front lighting System (AFS) (if fitted).
• Daytime Running Lamps (DRL)