Crash Signal Operation
WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
The Body Control Module/Gateway Module (BCM/GWM) assembly receives a crash signal on a hard wired connection from the Restraint Control Module (RCM) in the event of a crash of a severity to activate the airbags. On receipt of this signal, the BCM/GWM assembly activates the interior lamps which are on permanently and not subject to the BCM/GWM assembly timer.
The crash operation of the interior lamps can only be cancelled by operating the switch on the front interior lamp or by locking and unlocking the vehicle.