Jaguar SEMCON JLR XJ - Manual (Page 102)

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(FM8) SEMCON JLR OWNER GUIDE VER 1.00 NAS
LANGUAGE: english-NAS-en; MARQUE: jaguar; MODEL: XJ
Adaptive cruise control
102
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 using the instrument panel menu.
The sensitivity of the warning may be changed
and is retained when the ignition is switched
off:
• 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.
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 utilizes 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 5 mph (7 km/h)
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 87,
EMERGENCY BRAKE ASSIST (EBA).
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 center. 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.