2018 JEEP COMPASS fuel pressure

SERV4WD— Service 4WD Warning Light — If
Equipped
If the light stays on or comes on during
driving, it means that the 4WD system is not
functioning properly and that service is re-
quired. We recommend you drive to the near-
est service center and have the vehicle ser-
viced immediately.
— Service Stop/Start System Warning
Light — If Equipped
This telltale will turn on to indicate the Stop/
Start system is not functioning properly and
service is required. Contact your authorized
dealer for service.
— Tire Pressure Monitoring System
(TPMS) Warning Light
The warning light switches on and a message
is displayed to indicate that the tire pressure
is lower than the recommended value and/or
that slow pressure loss is occurring. In these
cases, optimal tire duration and fuel con-
sumption may not be guaranteed.Should one or more tires be in the condition
mentioned above, the display will show the
indications corresponding to each tire in
sequence.
CAUTION!
Do not continue driving with one or more
flat tires as handling may be compro-
mised. Stop the vehicle, avoiding sharp
braking and steering. If a tire puncture
occurs, repair immediately using the dedi-
cated tire repair kit and contact your au-
thorized dealer as soon as possible.
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure la-
bel. (If your vehicle has tires of a different
size than the size indicated on the vehicle
placard or tire inflation pressure label, you
should determine the proper tire inflation
pressure for those tires.)As an added safety feature, your vehicle has
been equipped with a tire pressure monitor-
ing system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale illu-
minates, you should stop and check your tires
as soon as possible, and inflate them to the
proper pressure. Driving on a significantly
under-inflated tire causes the tire to overheat
and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread
life, and may affect the vehicle’s handling
and stopping ability.
Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the
driver’s responsibility to maintain correct tire
pressure, even if under-inflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The
TPMS malfunction indicator is combined
with the low tire pressure telltale. When the
system detects a malfunction, the telltale will
67

For example, your vehicle may have a recom-
mended cold (parked for more than three
hours) placard pressure of 33 psi (227 kPa).
If the ambient temperature is 68°F (20°C)
and the measured tire pressure is 28 psi
(193 kPa), a temperature drop to 20°F (-7°C)
will decrease the tire pressure to approxi-
mately 24 psi (165 kPa). This tire pressure is
low enough to turn on the “Tire Pressure
Monitoring Telltale Light.” Driving the ve-
hicle may cause the tire pressure to rise to
approximately 28 psi (193 kPa), but the “Tire
Pressure Monitoring Telltale Light” will still
be on. In this situation, the “Tire Pressure
Monitoring Telltale Light” will turn off only
after the tires are inflated to the vehicle’s
recommended cold placard pressure value.
NOTE:
When filling warm tires, the tire pressure may
need to be increased up to an additional 4 psi
(30 kPa) above the recommended cold plac-
ard pressure in order to turn the Tire Pressure
Monitoring Telltale Light off.CAUTION!
• The TPMS has been optimized for the
original equipment tires and wheels.
TPMS pressures and warning have been
established for the tire size equipped on
your vehicle. Undesirable system opera-
tion or sensor damage may result when
using replacement equipment that is not
of the same size, type, and/or style. The
TPM sensor is not designed for use on
aftermarket wheels and may contribute
to a poor overall system performance or
sensor damage. Customers are encour-
aged to use OEM wheels to assure
proper TPM feature operation.
• Using aftermarket tire sealants may
cause the Tire Pressure Monitoring Sys-
tem (TPMS) sensor to become inoper-
able. After using an aftermarket tire
sealant it is recommended that you take
your vehicle to your authorized dealer to
have your sensor function checked.
• After inspecting or adjusting the tire
pressure always reinstall the valve stem
cap. This will prevent moisture and dirt
CAUTION!
from entering the valve stem, which
could damage the TPMS sensor.
NOTE:
• The TPMS is not intended to replace nor-
mal tire care and maintenance, or to pro-
vide warning of a tire failure or condition.
• The TPMS should not be used as a tire
pressure gauge while adjusting your tire
pressure.
• Driving on a significantly underinflated tire
causes the tire to overheat and can lead to
tire failure. Underinflation also reduces
fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping
ability.
• The TPMS is not a substitute for proper tire
maintenance, and it is the driver’s respon-
sibility to maintain correct tire pressure
using an accurate tire pressure gauge, even
if underinflation has not reached the level
to trigger illumination of the “Tire Pressure
Monitoring Telltale Light”.
SAFETY
92

WARNING!
• ONLY use the driver’s side floor mat on
the driver’s side floor area. To check for
interference, with the vehicle properly
parked with the engine off, fully depress
the accelerator, the brake, and the
clutch pedal (if present) to check for
interference. If your floor mat interferes
with the operation of any pedal, or is not
secure to the floor, remove the floor mat
from the vehicle and place the floor mat
in your trunk.
• ONLY use the passenger’s side floor mat
on the passenger’s side floor area.
• ALWAYS make sure objects cannot fall or
slide into the driver’s side floor area
when the vehicle is moving. Objects can
become trapped under accelerator,
brake, or clutch pedals and could cause
a loss of vehicle control.
• NEVER place any objects under the floor
mat (e.g., towels, keys, etc.). These ob-
jects could change the position of the
floor mat and may cause interference
WARNING!
with the accelerator, brake, or clutch
pedals.
• If the vehicle carpet has been removed
and re-installed, always properly attach
carpet to the floor and check the floor
mat fasteners are secure to the vehicle
carpet. Fully depress each pedal to
check for interference with the accelera-
tor, brake, or clutch pedals then re-
install the floor mats.
• It is recommended to only use mild soap
and water to clean your floor mats. After
cleaning, always check your floor mat
has been properly installed and is se-
cured to your vehicle using the floor mat
fasteners by lightly pulling mat.
Periodic Safety Checks You Should Make
Outside The Vehicle
Tires
Examine tires for excessive tread wear and
uneven wear patterns. Check for stones,
nails, glass, or other objects lodged in thetread or sidewall. Inspect the tread for cuts
and cracks. Inspect sidewalls for cuts,
cracks, and bulges. Check the wheel nuts for
tightness. Check the tires (including spare)
for proper cold inflation pressure.
Lights
Have someone observe the operation of brake
lights and exterior lights while you work the
controls. Check turn signal and high beam
indicator lights on the instrument panel.
Door Latches
Check for proper closing, latching, and lock-
ing.
Fluid Leaks
Check area under the vehicle after overnight
parking for fuel, coolant, oil, or other fluid
leaks. Also, if gasoline fumes are detected or
if fuel, or brake fluid leaks are suspected. The
cause should be located and corrected imme-
diately.
SAFETY
138

WARNING!
• Do not leave children or animals inside
parked vehicles in hot weather. Interior
heat build-up may cause serious injury
or death.
NOTE:
Engine start up in very low ambient tempera-
ture could result in evident white smoke. This
condition will disappear as the engine warms
up.
CAUTION!
The engine is allowed to crank as long as
30 seconds. If the engine fails to start
during this period, please wait at least two
minutes for the starter to cool before re-
peating start procedure.
Normal Starting Procedure — Keyless
Enter-N-Go
Observe the instrument panel cluster lights
when starting the engine.
NOTE:
Normal starting of either a cold or a warm
engine is obtained without pumping or press-
ing the accelerator pedal.
1. Always apply the parking brake.
2. Press and hold the brake pedal while
pushing the ENGINE START/STOP button
once.
NOTE:
A delay of the start of up to five seconds is
possible under very cold conditions. The
“Wait to Start” telltale will be illuminated
during the pre-heat process, When the
engine Wait To Start light goes off the
engine will automatically crank.
CAUTION!
If the “Water in Fuel Indicator Light” re-
mains on, DO NOT START the engine be-
fore the water is drained from the fuel
filters to avoid engine damage.
3. The system will automatically engage the
starter to crank the engine. If the vehicle
fails to start, the starter will disengage
automatically after 30 seconds.
4. If you wish to stop the cranking of the
engine prior to the engine starting, push
the button again.
5. Check that the oil pressure warning light
has turned off.
6. Release the parking brake.
STARTING AND OPERATING
144

Once A Month Or Before A Long Trip
• Check engine oil level.
• Check windshield washer fluid level.
• Check tire pressure and look for unusual
wear or damage. Rotate tires at the first
sign of irregular wear, even if it occurs
before the oil indicator system turns on.
• Check the fluid levels of the coolant reser-
voir and brake master cylinder, fill as
needed.
• Check function of all interior and exterior
lights.
At Each Oil Change
• Change the engine oil filter.
• Inspect the brake hoses and lines.
• Inspect for the presence of water in the fuel
filter/water separator unit.
CAUTION!
Failure to perform the required mainte-
nance items may result in damage to the
vehicle.
227

TIRES
Tires — General Information
Tire Pressure
Proper tire inflation pressure is essential to
the safe and satisfactory operation of your
vehicle. Four primary areas are affected by
improper tire pressure:
• Safety and Vehicle Stability
• Economy
• Tread Wear
• Ride Comfort
Safety
WARNING!
• Improperly inflated tires are dangerous
and can cause collisions.
• Underinflation increases tire flexing and
can result in overheating and tire failure.
• Overinflation reduces a tire's ability to
cushion shock. Objects on the road and
chuckholes can cause damage that re-
sult in tire failure.
WARNING!
• Overinflated or underinflated tires can
affect vehicle handling and can fail sud-
denly, resulting in loss of vehicle con-
trol.
• Unequal tire pressures can cause steer-
ing problems. You could lose control of
your vehicle.
• Unequal tire pressures from one side of
the vehicle to the other can cause the
vehicle to drift to the right or left.
• Always drive with each tire inflated to
the recommended cold tire inflation
pressure.
Both under-inflation and over-inflation affect
the stability of the vehicle and can produce a
feeling of sluggish response or over respon-
siveness in the steering.
NOTE:
• Unequal tire pressures from side to side
may cause erratic and unpredictable steer-
ing response.
• Unequal tire pressure from side to side may
cause the vehicle to drift left or right.Fuel EconomyUnderinflated tires will increase tire rolling re-
sistance resulting in higher fuel consumption.
Tread Wear
Improper cold tire inflation pressures can
cause abnormal wear patterns and reduced
tread life, resulting in the need for earlier tire
replacement.
Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a comfort-
able ride. Over-inflation produces a jarring
and uncomfortable ride.
Tire Inflation Pressures
The proper cold tire inflation pressure is
listed on the left side B-Pillar or rear edge of
the passenger door.
At least once a month:
• Check and adjust tire pressure with a good
quality pocket-type pressure gauge. Do not
make a visual judgement when determining
proper inflation. Tires may look properly
inflated even when they are under-inflated.SERVICING AND MAINTENANCE
238

Adaptive Cruise Control (ACC)
Off ..............164, 165, 166
On ..............164, 165, 166
Adaptive Cruise Control (ACC) (Cruise
Control)..................164
Additives, Fuel................256
AirBag ....................107
Air Bag Operation............108
Air Bag Warning Light.........106
Enhanced Accident Response. . . .220
Event Data Recorder (EDR)......220
If A Deployment Occurs........117
Knee Impact Bolsters.........113
Maintaining Your Air Bag System . .119
Redundant Air Bag Warning Light . .106
Side Air Bags..............113
Transporting Pets............135
Air Bag Light...........61, 106, 137
Air Bag Maintenance............119
Air Conditioner Maintenance.......234
Air Conditioning Filter.........47, 235
Air Conditioning, Operating Tips......47
Air Conditioning Refrigerant........234
Air Conditioning System.......46, 234
Air Pressure, Tires..............238Alarm
Arm The System.............20
Disarm The System............20
Alarm (Security Alarm).........19, 64
Alarm System (Security Alarm). . . .19, 21
Antifreeze (Engine Coolant)........258
Anti-Lock Brake System (ABS).......76
Anti-Lock Warning Light...........65
Arming System (Security Alarm)......19
Assist, Hill Start................83
Audio Jack...............274, 282
Audio Systems (Radio)...........267
Auto Down Power Windows.........48
Automatic Dimming Mirror.........34
Automatic Headlights............35
Automatic Temperature Control (ATC) . . .46
Automatic Transaxle............150
Automatic Transmission..........152
Adding Fluid.............
.259
Fluid
Level Check...........237
Fluid Type................259
Auto Up Power Windows...........48
Auxiliary Electrical Outlet (Power Outlet) .56
Auxiliary Power Outlet............56
Axle Fluid...................259Axle Lubrication...............259
Back-Up...................176
Back-Up Camera..............176
Battery..................62, 233
Charging System Light.........62
Belts, Seat..................137
Blind Spot Monitoring............85
Brake Assist System.............77
Brake Control System, Electronic.....77
Brake Fluid..................259
Brake System................236
Fluid Check...........236, 259
Master Cylinder.............236
Parking..................145
Brake/Transmission Interlock.......151
Bulb Replacement.............186
Bulbs, Light.................138
Camera....................176
Capacities, Fluid..............258
Caps, Filler
Fuel....................176
Oil (Engine)...............230
Carbon Monoxide Warning.....136, 257
INDEX
333

Key-In Reminder...............16
Keyless Enter-N-Go..............22
Keyless Entry System............13
Key, Replacement............14, 19
Keys.......................13
Lane Change And Turn Signals. . . .34, 36
Lane Change Assist...........34, 37
LaneSense..................173
Lap/Shoulder Belts..............99
Latches....................138
Hood....................53
Leaks, Fluid.................138
Leveling, Headlight..............37
Life Of Tires.................241
Liftgate.....................54
Liftgate Window Wiper/Washer. . . .37, 39
Light Bulbs..................138
Lights.....................138
AirBag ............61, 106, 137
Automatic Headlights..........35
Battery Saver...............34
Brake Assist Warning..........81
Bulb Replacement...........186
Cruise..............69, 70, 71
Daytime Running..........34, 35
Dimmer Switch, Headlight . .34, 35, 36Engine Temperature Warning.....63
Exterior..................138
Fog .....................69
Hazard Warning Flasher........186
Headlight Leveling............37
Headlights.................34
Headlights On Reminder........34
Headlight Switch.............34
High Beam..............34, 35
High Beam/Low Beam Select . . .34, 35
Hill Descent Control Indicator.....82
Instrument Cluster............34
Lights On Reminder...........34
Low Fuel..................66
Malfunction Indicator (Check Engine) .66
Park....................69
Passing................34, 35
Seat Belt Reminder...........64
Security Alarm..............64
Service.................
.186
Tire Pressure Monitoring (TPMS) .67, 91
T
raction Control.............81
Turn Signal.......34, 36, 70, 138
Warning (Instrument Cluster
Description).............63, 70
Locks
Child Protection.............25Steering Wheel...........16, 17
Low Tire Pressure System..........91
Lug Nuts...................255
Maintenance Free Battery.........233
Maintenance Schedule...........222
Malfunction Indicator Light (Check
Engine)...................66
Manual Transmission........147, 237
Fluid Level Check...........237
Shift Speeds..............148
Master Cylinder (Brakes)..........236
Memory Feature (Memory Seat)......25
Memory Seat..................25
Memory Seats And Radio..........25
Mini-Trip Computer..............61
Mirrors.....................34
Automatic Dimming...........34
Heated...................34
Outside..................34
Rearview..................34
Monitor, Tire Pressure System.......91
Multi-Function Control Lever.....34, 36
Occupant Restraints.............97
Octane Rating, Gasoline (Fuel) . .255, 259
Oil, Engine..................259
INDEX
336