Bendix Commercial Vehicle Systems WINGMAN ADVANCED FLR20 SENSOR - Manual (Page 55)

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Appendix F
Bendix ® Driver Interface Unit (DIU): Displays & Alerts
F7.0 Brake Overuse Alert
Using cruise control on downhill runs is the primary cause for this alert to be activated. Cruise control should
NOT be used on downhill grades. Approach grades as you would normally, with the appropriate gear selected
and at a safe speed.
To guard against foundation brake overuse by the adaptive cruise control with braking feature of the Bendix ® Wingman ®
Advanced ™ system, the frequency of foundation brake interventions is monitored. If the system detects a situation
where the brakes are being applied too frequently by the system in a given time period, the brake overuse alert will
activate. This is designed to help prevent overheating of the brakes, which may lead to brake fade and reduced vehicle
braking capability. In this situation, the Brake Overuse Alert will flash a message requesting driver intervention. Also, an
audible alert will sound and a blue LED will blink on the Bendix Driver Interface Unit (DIU), as illustrated below:
Screen
flashes
between
these two
displays
ACB REQUIRES
DRIVER INTERVENTION
ACB REQUIRES
DRIVER INTERVENTION
Blue
LED
Blinks
ACB REQUIRES
DRIVER INTERVENTION
This alert will continue for 15 seconds, during which time the driver should step on the brake or turn off cruise
control using the cruise control on/off switch.
If the system
detects that
the driver has
intervened
within 15
seconds after a
brake overuse
alert
(Typically by
applying the
brakes, or
cancelling cruise
control)
• The intervention cancels cruise control.
• After a Brake Overuse Alert, for a period of time (typically 20 minutes), the Wingman
Advanced system will not use the foundation brakes when intervening. The system
will be limited to de-throttling the engine and applying the engine retarder during this time.
Note: In all cases, the driver still has the ability to apply the foundation brakes if
necessary. The driver should take care since overheated brakes may reduce the
vehicle’s braking capability.
• The time period for this mode is measured from the time the Brake Overuse Alert was
activated and lasts approximately 20 minutes.
• Note: The driver will continue to receive all three alerts (FDA, Impact, and Stationary Object).
• Additionally, the DIU message will change to “ACB Braking Overuse” and the blue LED will
remain lit, as shown below:
Blue LED
Stays On
Bendix
_____________________
ACB BRAKING OVERUSE
Press OK for Menu
At the end of the
“cooling-off” period, the
“ACB Braking Overuse”
message and the blue
LED will turn off.
If the system
does not detect
an intervention
by the driver
within 15
seconds after a
brake overuse
alert
• The system will shut itself off, and set a Diagnostic Trouble Code (DTC).
• All intervention features of Wingman Advanced will be disabled until the next ignition
cycle.
• Note: The driver will continue to receive all three alerts (FDA, Impact, and Stationary Object).
• Note: In all cases, the driver still has the ability to apply the foundation brakes if
necessary. The driver should take care since overheated brakes may reduce the
vehicle’s braking capability.
Appendix F