Jaguar XJ - Manual (Page 92)

L
(FM8) SEMCON JLR OWNER GUIDE VER 1.00 EURO
LANGUAGE: english-en; MARQUE: jaguar; MODEL: XJ
Adaptive cruise control
92
FORWARD ALERT FUNCTION
Limited detection and warning of objects
ahead, is provided during ACC operation by the
ACC FORWARD ALERT warning. The enhanced
forward alert feature additionally provides
warnings when ACC is not engaged; if an object
is detected close ahead, then the warning tone
and message will be issued. The brakes will not
be applied.
The forward alert system does not initiate any
action. The driver must take appropriate action
when the FORWARD ALERT message is
displayed. However, the system monitors
driver actions (e.g. braking, steering or
indicating) and may not initiate the warning
display if the appropriate action has been taken
early enough.
The Forward alert function may be switched on
or off from the Vehicle Set-up area in the
instrument panel menu. See 53, INTERACTIVE
CONTROLS.
The sensitivity of the warning may be changed:
• Press the gap decrease button when ACC is
disengaged to display and then decrease
the sensitivity of the alert.
• Press the gap increase button to display
and then increase the sensitivity of the
alert.
Note: The forward alert set gap is retained
when the ignition is switched off.
FORWARD ALERT is displayed in the message
centre.
ADVANCED EMERGENCY BRAKE
ASSIST
The system may not react to slow
moving vehicles and will not react to
stationary vehicles or vehicles travelling
in the opposite direction.
Warnings may not appear if the
distance to the vehicle ahead is very
small or if steering wheel or pedal
movements are large (e.g. to avoid a
collision).
The system utilises the same radar
sensor as ACC and Forward alert - the
same limitations of performance apply.
Advanced emergency brake assist is available
at speeds above approximately 7 km/h (5 mph)
and improves braking response during
emergency braking, when a moving vehicle is
detected close ahead.
If the risk of collision increases after the
FORWARD ALERT warning is displayed,
advanced emergency brake assist is activated.
The brakes are automatically applied gently in
preparation for rapid braking (this may be
noticeable). If the brake pedal is then pressed
quickly, full braking is implemented, even if
only light pressure is applied to the pedal. See
78, EMERGENCY BRAKE ASSIST (EBA).
Note: Braking performance will only be
improved if the driver applies the brakes.
Advanced emergency brake assist will function
even if Forward Alert and ACC are switched off.
If there is a fault with the system, FORWARD
ALERT UNAVAILABLE is displayed in the
message centre. The vehicle can still be driven
and the braking system will still operate, but
without advanced emergency brake assistance.
Seek qualified assistance to have the fault
rectified.
When the warning lamp in the
instrument panel is on, Forward
alert is active.