Failure Mode

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.

In the event of a failure of the AFS system, a warning indicator in the Instrument Cluster (IC) is illuminated to warn the driver. The AFS warning indicator illuminates when the ignition is in power mode 6 (ignition on) or greater. The AFS warning indicator will also be illuminated if a failure of the vehicle speed signal is detected.

Illumination of the AFS warning indicator does not necessarily mean that there is a fault with the AFS system.

The BCM/GWM assembly performs a diagnostic routine every time AFS is requested. If any fault is found, the BCM/GWM assembly will suspend the operation of the AFS function.

If the AFS levelling system has failed with the xenon projector module in a position other than the correct straight ahead position, the BCM/GWM assembly will attempt to drive the projector module to a position a small amount lower than the standard position.

The BCM/GWM assembly software can detect an internal failure of the BCM/GWM assembly control circuits. The BCM/GWM assembly will power the projector modules to the zero position and prevent further operation.

Faults can be investigated by interrogating the BCM/GWM assembly using a Jaguar approved diagnostic tool to check for fault codes.