service JEEP COMPASS TRAILHAWK 2018 Owners Manual

NOTE:The head restraints should only be removed by
qualified technicians, for service purposes only. If either of
the head restraints require removal, see an authorized
dealer.

NOTE:The head restraints should only be removed by
qualified technicians, for service purposes only. If either of
the head restraints require removal, see an authorized
dealer.

If the light remains on when the parking brake has been
disengaged, and the fluid level is at the full mark on the
master cylinder reservoir, it indicates a possible brake
hydraulic system malfunction or that a problem with the
Brake Booster has been detected by the Anti-Lock Brake
System (ABS) / Electronic Stability Control (ESC) system.
In this case, the light will remain on until the condition has
been corrected. If the problem is related to the brake
booster, the ABS pump will run when applying the brake,
and a brake pedal pulsation may be felt during each stop.
The dual brake system provides a reserve braking capacity
in the event of a failure to a portion of the hydraulic
system. A leak in 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 conditions.
The vehicle should have service performed, and the brake
fluid level checked.
If brake failure is indicated, immediate repair is necessary.

ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated Onboard
Diagnostic system called OBD II. This system monitors the
performance of the emissions, engine, and automatic trans-
mission control systems. When these systems are operating
properly, your vehicle will provide excellent performance
and fuel economy, as well as emissions well within current
government regulations.
If any of these systems require service, the OBD II system
will turn on the Malfunction Indicator Light (MIL). It will
also store diagnostic codes and other information to assist
your service technician in making repairs. Although your
vehicle will usually be drivable and not need towing, see
an authorized dealer for service as soon as possible.

WARNING!(Continued)
•The capabilities of an ABS equipped vehicle must
never be exploited in a reckless or dangerous manner
that could jeopardize the user ’s safety or the safety of
others.
ABS is designed to function with the OEM tires. Modifica-
tion may result in degraded ABS performance.
Anti-Lock Brake Warning Light
The yellow “Anti-Lock Brake Warning Light” will turn on
when the ignition is turned to the ON/RUN mode and
may stay on for as long as four seconds.
If the “Anti-Lock Brake Warning Light” remains on or
comes on while driving, it indicates that the anti-lock
portion of the brake system is not functioning and that
service is required. However, the conventional brake sys-
tem will continue to operate normally if the “Anti-Lock
Brake Warning Light” is on.
If the “Anti-Lock Brake Warning Light” is on, the brake
system should be serviced as soon as possible to restore the
benefits of anti-lock brakes. If the “Anti-Lock Brake Warning
Light” does not come on when the ignition is turned to the
ON/RUN mode, have the light repaired as soon as possible.
Electronic Brake Control System
Your vehicle is equipped with an advanced Electronic
Brake Control system (EBC). This system includes Elec-
tronic Brake Force Distribution (EBD), Anti-Lock Brake
System (ABS), Brake Assist System (BAS), Hill Start Assist
(HSA), Traction Control System (TCS), Electronic Stability
Control (ESC), and Electronic Roll Mitigation (ERM). These
systems work together to enhance both vehicle stability
and control in various driving conditions.
Your vehicle may also be equipped with Ready Alert
Braking (RAB), Rain Brake Support (RBS), Trailer Sway
Control (TSC), Hill Descent Control (HDC), and Dynamic
Steering Torque (DST).
Traction Control System (TCS)
This system monitors the amount of wheel spin of each of
the driven wheels. If wheel spin is detected, the TCS may
apply brake pressure to the spinning wheel(s) and/or
reduce vehicle power to provide enhanced acceleration
and stability. A feature of the TCS, Brake Limited Differen-
tial (BLD), 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
5
SAFETY 139

7. The driver and front passenger seats should be movedback as far as practical to allow the front air bags room
to inflate.
8. Do not lean against the door or window. If your vehicle has side air bags, and deployment occurs, the side air
bags will inflate forcefully into the space between occu-
pants and the door and occupants could be injured.
9. If the air bag system in this vehicle needs to be modified to accommodate a disabled person, refer to the “Cus-
tomer Assistance” section for customer service contact
information.

NOTE:If the speedometer, tachometer, or any engine
related gauges are not working, the Occupant Restraint
Controller (ORC) may also be disabled. In this condition
the air bags may not be ready to inflate for your protection.
Have an authorized dealer service the air bag system
immediately.

NOTE:A dedicated message will appear in the instrument
cluster display if Brake Service Mode cannot be deactivated.

•Check threaded fasteners for looseness, particularly on
the chassis, drivetrain components, steering, and sus-
pension. Retighten them, if required, and torque to the
values specified in the Service Manual.
• Check for accumulations of plants or brush. These things
could be a fire hazard. They might hide damage to fuel
lines, brake hoses, axle pinion seals, and propeller shafts.
• After extended operation in mud, sand, water, or similar
dirty conditions, have the radiator, fan, brake rotors,
wheels, brake linings, and axle yokes inspected and
cleaned as soon as possible.

WARNING!
ALWAYS obey traffic laws and pay attention to the
road. ALWAYS drive safely with your hands on the
steering wheel. You have full responsibility and as-
sume all risks related to the use of the features and
applications in this vehicle. Only use the features and
applications when it is safe to do so. Failure to do so
may result in an accident involving serious injury or
death.
NOTE:
• Your vehicle may be transmitting data as authorized by
the subscriber.
• The SOS and ASSIST buttons will only function if you
are connected to an operable LTE (voice/data) or 4G
(data) network. Other Uconnect services will only be
operable if your SiriusXM Guardian service is active and
you are connected to an operable LTE (voice/data) or 4G
(data) network. ASSIST Call
The ASSIST Button is used to automatically connect you to
any one of the following support centers:
•
Roadside Assistance – If you get a flat tire, or need a tow,
just push the ASSIST button and you will be connected
to a representative for assistance. Roadside Assistance
will know what vehicle you’re driving and its location.
Additional fees may apply for roadside assistance.
• SiriusXM Guardian Customer Care – In-vehicle support
for SiriusXM Guardian.
• Vehicle Customer Care – Total support for all other
vehicle issues.
SOS Call
1. Push the SOS Call button on the Rearview Mirror.
NOTE: In case the SOS Call button is pushed in error, there
will be a ten second delay before the SOS Call system
initiates a call to a SOS operator. To cancel the SOS Call
connection, push the SOS call button on the Rearview
Mirror or press the cancellation button on the Device
Screen. Termination of the SOS Call will turn off the green
LED light on the Rearview Mirror.
324 IN CASE OF EMERGENCY