2007 JEEP COMPASS brake

ELECTRONIC BRAKE CONTROL SYSTEM –
ABS/TCS/BAS/ERM/ESP
Your vehicle may be equipped with an optional ad-
vanced electronic brake control system that includes
Anti-Lock Brake System (ABS), Traction Control System
(TCS), Brake Assist System ( BAS), Electronic Roll Miti-
gation (ERM) and Electronic Stability Program (ESP). All
systems work together to enhance vehicle stability and
control in various driving conditions and are commonly
referred to as ESP.
Anti-Lock Brake System – ABS
This system aids the driver in maintaining vehicle control
under adverse braking conditions. The system controls
hydraulic brake pressure to prevent wheel lock-up and
help avoid skidding on slippery surfaces during braking.
Refer to “Anti-Lock Brake System” in this Section of the
manual for more information about ABS.
Traction Control System (TCS)
This system monitors the amount of wheel spin of each of
the driven wheels. If wheel spin is detected, brake
pressure is applied to the slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability. A feature of the TCS system functions similar to
a limited slip differential and controls the wheel spin
across a driven axle. If one wheel on a driven axle is
spinning faster than the other, the system will apply the
brake of the spinning wheel. This will allow more engine
torque to be applied to the wheel that is not spinning.
This feature remains active even if TCS and ESP are in
either the “Partial Off” or “ESP Off” modes. Refer to
“Electronic Stability Program (ESP)” in this Section of this
manual.
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Brake Assist System (BAS)
The BAS is designed to optimize the vehicle’s braking
capability during emergency braking maneuvers. The
system detects an emergency braking situation by sens-
ing the rate and amount of brake application and then
applies optimum pressure to the brakes. This can help
reduce braking distances. The BAS complements the
Anti-Lock Brake System (ABS). Applying the brakes very
quickly results in the best BAS assistance. To receive the
benefit of the system, you must apply continuous brak-
ing pressure during the stopping sequence. Do not
reduce brake pedal pressure unless braking is no longer
desired. Once the brake pedal is released, the BAS is
deactivated.WARNING!
•BAS cannot prevent the natural laws of physics
from acting on the vehicle, nor can it increase
braking efficiency beyond that afforded by the
condition of the vehicle brakes and tires or the
traction afforded.
•The BAS cannot prevent accidents, including
those resulting from excessive speed in turns,
following another vehicle too closely, or hydro-
planing. Only a safe, attentive, and skillful driver
can prevent accidents.
•The capabilities of a BAS-equipped vehicle must
never be exploited in a reckless or dangerous
manner which could jeopardize the user ’s safety
or the safety of others.
140 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Electronic Roll Mitigation (ERM)
This system anticipates the potential for wheel lift by
monitoring the driver ’s steering wheel input and the
speed of the vehicle. When ERM determines that the rate
of change of the steering wheel angle and vehicles speed
are sufficient to potentially cause wheel lift, it applies the
appropriate brake and may reduce engine power to
lessen the chance that wheel lift will occur. ERM will only
intervene during very severe or evasive driving maneu-
vers.
ERM can only reduce the chance of wheel lift occurring
during severe or evasive driving maneuvers. It can not
prevent wheel lift due to other factors such as road
conditions, leaving the roadway or striking objects or
other vehicles.WARNING!
Many factors, such as vehicle loading, road condi-
tions and driving conditions, influence the chance
that wheel lift or rollover may occur. ERM can not
prevent all wheel lift or rollovers, especially those
that involve leaving the roadway or striking objects
or other vehicles. Only a safe, attentive, and skillful
driver can prevent accidents. The capabilities of an
ERM equipped vehicle must never be exploited in a
reckless or dangerous manner which could jeopar-
dize the user’s safety or the safety of others.
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ESP (Electronic Stability Program)
This system enhances directional control and stability of
the vehicle under various driving conditions. ESP cor-
rects for over/under steering of the vehicle by applying
the brake of the appropriate wheel to assist in counter-
acting the over/under steer condition. Engine power
may also be reduced to help the vehicle maintain the
desired path. ESP uses sensors in the vehicle to determine
the vehicle path intended by the driver and compares it
to the actual path of the vehicle. When the actual path
does not match the intended path, ESP applies the brake
of the appropriate wheel to assist in counteracting the
oversteer or understeer condition
•Oversteer - when the vehicle is turning more than
appropriate for the steering wheel position.
•Understeer - when the vehicle is turning less than
appropriate for the steering wheel position.
ESP/TCS Indicator Light
The “ESP/TCS Indicator Light” located in the instrument
cluster, starts to flash as soon as the tires lose traction and
the ESP system becomes active. The “ESP/TCS Indicator
Light” also flashes when TCS is active. If the “ESP/TCS
Indicator Light” begins to flash during acceleration, ease
up on the accelerator and apply as little throttle as
possible. Be sure to adapt your speed and driving to the
prevailing road conditions.
142 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

INSTRUMENT CLUSTER DESCRIPTIONS
1. Fuel Gauge/Fuel Door Location
When the ignition switch is in the ON position,
the pointer will show the level of fuel remain-
ing in the fuel tank. The fuel pump symbol
points to the side of the vehicle where the fuel
door is located
2. Charging System Light
This light shows the status of the electrical charg-
ing system. The light should come on briefly when
the ignition switch is first turned ON and remain on
briefly as a bulb check. If the light stays on or comes on
while driving, it means that there is a problem with the
charging system. Obtain SERVICE IMMEDIATELY.3. Electronic Throttle Control Indicator Light
This light informs you of a problem with the
Electronic Throttle Control system. If a prob-
lem is detected, the light will come on while the
engine is running. If the light remains lit with
the engine running your vehicle will usually be drivable
and not need towing, however see your dealer for service
as soon as possible.
If the light is flashing when the engine is running you
may experience power loss, an elevated/rough idle, and
increased brake pedal effort, and your vehicle may
require towing. Immediate service is required.
The light will come on when the ignition switch is first
turned on and remain on briefly as a bulb check. This is
normal. If the light does not come on during starting,
have the system checked by an authorized dealer.
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10. Anti-Lock Warning Light (ABS) — If Equipped
This light monitors the Anti-Lock Brake System
(ABS) described elsewhere in this manual. This
light will come on when the ignition key is
turned to the ON position and may stay on for
as long as four seconds.
If the ABS light remains on or comes on during driving,
it indicates that the Anti-Lock portion of the brake system
is not functioning and that service is required, however,
the conventional brake system will continue to operate
normally provided that the BRAKE warning light is not
on.
If the ABS light is on, the brake system should be serviced
as soon as possible to restore the benefit of Anti-Lock
Brakes.
The warning light should be checked frequently to assure
that it is operating properly. Turn the ignition key to theon position, but do not start the vehicle. The light should
come on. If the light does not come on, have the system
checked by an authorized dealer.
11. Seat Belt Reminder Light
When the ignition switch is first turned ON, this
light will come on for about six seconds. A chime
will sound if you have not pulled the shoulder belt
out of the retractor. This is a reminder to “buckle up”. If
you do not buckle up, the light will remain on.
12. Tachometer
The white area of the scale shows the permissible engine
revolutions-per-minute (rpm x 1000) for each gear range.
Before reaching the red area, ease up on the accelerator to
prevent engine damage.
13. Engine Temperature Warning Light
This light warns of an overheated engine condi-
tion. If the engine is critically hot, a warning chime
168 UNDERSTANDING YOUR INSTRUMENT PANEL

will sound 10 times. After the chime turns off, the engine
will still be critically hot until the light goes out.
14. Brake System Warning Light
This light monitors various brake functions, in-
cluding brake fluid level and parking brake appli-
cation. If the brake light turns on, it may indicate that the
parking brake is applied, there is a low brake fluid level
or there is a problem with the anti-lock brake system.
The dual brake system provides a reserve braking capac-
ity in the event of a failure to a portion of the hydraulic
system. Failure of either half of the dual brake system is
indicated by the Brake Warning Light which will turn on
when the brake fluid level in the master cylinder has
dropped below a specified level.
The light will remain on until the cause is corrected.NOTE:The light may flash momentarily during sharp
cornering maneuvers which change fluid level condi-
tions. The vehicle should have service performed, and
the brake fluid level checked.
If brake failure is indicated, immediate repair is neces-
sary.
WARNING!
Driving a vehicle with the brake light on is danger-
ous. Part of the brake system may have failed. It will
take longer to stop the vehicle. You could have an
accident. Have the vehicle checked immediately.
Vehicles equipped with Anti-Lock brakes (ABS), are also
equipped with Electronic Brake Force Distribution (EBD).
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In the event of an EBD failure, the Brake Warning Light
will turn on along with the ABS Light. Immediate repair
to the ABS system is required.
The operation of the Brake Warning Light can be checked
by turning the ignition switch from the OFF position to
the ON position. The light should illuminate for approxi-
mately two seconds. The light should then turn off unless
the parking brake is applied or a brake fault is detected.
If the light does not illuminate, have the light inspected
by an authorized dealer.
The light also will turn on when the parking brake is
applied with the ignition switch in the ON position.
NOTE:This light shows only that the parking brake is
applied. It does not show the degree of brake application.15. Transmission Over Temp Light
During sustained high speed driving on hot
days, the automatic transaxle oil may become
too hot. If this happens, the transmission over-
heat indicator light will come on and the
vehicle will slow slightly until the automatic transaxle
cools down enough to allow a return to the requested
speed. If the high speed is maintained, the overheating
will reoccur as before in a cyclic fashion.
16. Theft Alarm Light — If Equipped
This light will flash rapidly for several seconds when the
alarm system is arming. The light will begin to flash
slowly indicating that the system is armed.
17. Temperature Gauge
If the pointer rises to theH(red) mark, the instrument
cluster will sound a chime. Pull over and stop the vehicle.
Idle the vehicle with the air conditioner turned off until
170 UNDERSTANDING YOUR INSTRUMENT PANEL