Roll Stability Advisor
IMPORTANT: This is not an advance warning
system. The roll stability advisor displays a mes-
sage only after the driving maneuver is com-
pleted.
The roll stability system uses a lateral-acceleration
sensor that monitors rollover risk. Shortly after a
curve, lane change, or other driving maneuver that
results in a rollover-risk detection, a dash warning
light illuminates, an audible tone sounds, and a driver
advisory message is displayed in the driver message
center. The purpose is to advise the driver that the
previous maneuver produced a rollover risk.
The roll stability advisor displays different text mes-
sages depending on the severity of the risk of each
occurrence of risky driving. From the highest risk
level to the lowest risk level, the system will sound
an audible alert, and display a message, as shown in
Fig. 6.29.
NOTE: The system will calculate and recom-
mend a speed reduction value. It may be differ-
ent than the values shown here.
Bring the vehicle to an authorized service facility if a
system failure message is displayed.
Roll Stability Control
WARNING
The Roll Stability Control system is intended only
as an aid for a conscientious and alert driver.
Carefully read the information in this manual to
understand this system and its limitations. The
Roll Stability Control system is not a substitute
for safe driving procedures. Failure to drive
safely, and use the system properly, could result
in personal injury and/or death and property
damage.
The roll stability control system automatically reduces
engine power, applies the engine brake, and/or ap-
plies the tractor and trailer brakes when the accelera-
tion sensor detects that the vehicle is at risk of rolling
over. The control can intervene even before an advi-
sory message is displayed.
The dash indicator light illuminates whenever the roll
stability control system intervenes.
Message to Display
41
MessageMSG
No.
System Fault1
WARNING
RAC SYSTEM FAIL
ACTIVE SLOWING
ROLLOVER RISK
4 NoneRSC2
VERY HIGH RISK OF
ROLLOVER DETECTED
REDUCE SPEED
AT LEAST 11 KPH
REDUCE SPEED
AT LEAST 7 MPH
or in metric
19.6 10RSA Level 33
HIGH RISK OF
ROLLOVER DETECTED
REDUCE SPEED
AT LEAST 11 KPH
REDUCE SPEED
AT LEAST 7 MPH
or in metric
14 5RSA Level 24
ROLLOVER RISK
DETECTED
REDUCE SPEED
AT LEAST 11 KPH
or in metric
REDUCE SPEED
AT LEAST 7 MPH
8.4 2RSA Level 15
HARD BRAKING WITH
ABS ACTIVATED
LOOK AHEAD
BRAKE SOONER
14 0.5HBED Level 36
HARD BRAKING
DETECTED
LOOK AHEAD
BRAKE SOONER
14 0.5HBED Level 27
LOSS OF TRACTION
ABS ACTIVATED
ROAD SURFACE
MAY BE POOR
14 0.5HBED Level 18
07/25/2008 f040769
Display
Time:
Seconds
Buzzer
Time:
Seconds
Fig. 6.29, Roll Stability and Hard-Braking Warnings
Driver Assistance Features
6.12
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