check engine light JEEP COMPASS 2023 User Guide

214SAFETY
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.
Redundant Air Bag Warning Light
If a fault with the Air Bag Warning Light is
detected, which could affect the
Supplemental Restraint System (SRS),
the Redundant Air Bag Warning Light will
illuminate on the instrument panel. The
Redundant Air Bag Warning Light will stay on until
the fault is cleared. In addition, a single chime will
sound to alert you that the Redundant Air Bag
Warning Light has come on and a fault has been
detected. If the Redundant Air Bag Warning Light comes on intermittently or remains on while driving
have an authorized dealer service the vehicle
immediately Ú
page 89.
Front Air Bags
This vehicle has front air bags and lap/shoulder
belts for both the driver and front passenger. The
front air bags are a supplement to the seat belt
restraint systems. The driver front air bag is
mounted in the center of the steering wheel.
The passenger front air bag is mounted in the
instrument panel, above the glove compartment.
The words “SRS AIRBAG” or “AIRBAG” are
embossed on the air bag covers.

Front Air Bag/Knee Bolster Locations

Driver And Passenger Front Air Bag
Features
The Advanced Front Air Bag system has multistage
driver and front passenger air bags. This system
provides output appropriate to the severity and
type of collision as determined by the Occupant
Restraint Controller (ORC), which may receive
information from the front impact sensors
(if equipped) or other system components.
WARNING!
Ignoring the Air Bag Warning Light in your
instrument panel could mean you won’t have the
air bag system to protect you in a collision. If the
light does not come on as a bulb check when the
ignition is first turned on, stays on after you start
the vehicle, or if it comes on as you drive, have
an authorized dealer service the air bag system
immediately.
1 — Driver And Passenger Front Air Bags
2 — Driver Knee Impact Bolster/Supplemental
Driver Knee Air Bag
3 — Passenger Knee Impact Bolster
WARNING!
Being too close to the steering wheel or instru -
ment panel during front air bag deployment
could cause serious injury, including death. Air
bags need room to inflate. Sit back, comfort -
ably extending your arms to reach the steering
wheel or instrument panel.
Never place a rear-facing child restraint in
front of an air bag. A deploying passenger
front air bag can cause death or serious injury
to a child 12 years or younger, including a
child in a rear-facing child restraint.
Never install a rear-facing child restraint in the
front seat of a vehicle. Only use a rear-facing
child restraint in the rear seat. If the vehicle
does not have a rear seat, do not transport a
rear-facing child restraint in that vehicle.

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224SAFETY
Enhanced Accident Response System
In the event of an impact, if the communication
network remains intact, and the power remains
intact, depending on the nature of the event, the
Occupant Restraint Controller (ORC) will determine
whether to have the Enhanced Accident Response
System perform the following functions:
Cut off fuel to the engine (if equipped)
Cut off battery power to the electric motor
(if equipped)
Flash hazard lights as long as the battery has
power
Turn on the interior lights, which remain on as
long as the battery has power or for 15 minutes
from the intervention of the Enhanced Accident
Response System
Unlock the power door locks Your vehicle may also be designed to perform any
of these other functions in response to the
Enhanced Accident Response System:
Turn off the Fuel Filter Heater, Turn off the HVAC
Blower Motor, Close the HVAC Circulation Door
Cut off battery power to the:
Engine
Electric Motor (if equipped)
Electric power steering
Brake booster
Electric park brake
Automatic transmission gear selector
Horn
Front wiper
Headlamp washer pump (if equipped)
NOTE:After an accident, remember to cycle the ignition to
the STOP (OFF/LOCK) position and remove the key
from the ignition switch to avoid draining the
battery. Carefully check the vehicle for fuel leaks in
the engine compartment and on the ground near
the engine compartment and fuel tank before
resetting the system and starting the engine. If
there are no fuel leaks or damage to the vehicle
electrical devices (e.g. headlights) after an
accident, reset the system by following the
procedure described below. If you have any doubt,
contact an authorized dealer.

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SAFETY225
Enhanced Accident Response System Reset Procedure
After the event occurs, when the system is active, a message regarding fuel cutoff is displayed. Turn the ignition switch from ignition AVV/START or MAR/ON/
RUN to ignition STOP/OFF/LOCK. Carefully check the vehicle for fuel leaks in the engine compartment and on the ground near the engine compartment and fuel
tank before resetting the system and starting the engine.

Depending on the nature of the event the left and right turn signal lights, located in the instrument panel, may both be blinking and will continue to blink. In order
to move your vehicle to the side of the road, you must follow the system reset procedure.

Customer Action
NOTE:
Each step MUST BE held for at least two seconds
Customer Will See
1. Turn ignition STOP/OFF/LOCK. (Turn Signal Switch Must be placed
in Neutral State).
2. Turn ignition MAR/ON/RUN. Right turn light BLINKS.
Left turn light is OFF.
3. Turn right turn signal switch ON. Right turn light is ON SOLID.
Left turn light BLINKS.
4. Place turn signal in neutral state. Right turn light is OFF.
Left turn light BLINKS.
5. Turn left turn signal switch ON. Right turn light BLINKS.
Left turn light is ON SOLID.
6. Place turn signal in neutral state. Right turn light BLINKS.
Left turn light is OFF.
6

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242SAFETY
(Continued)
PERIODIC SAFETY CHECKS YOU SHOULD
M
AKE OUTSIDE THE VEHICLE
Tires
Examine tires for excessive tread wear and uneven
wear patterns. Check for stones, nails, glass, or
other objects lodged in the tread or sidewall.
Inspect the tread for cuts and cracks. Inspect
sidewalls for cuts, cracks, and bulges. Check the
lug nut/bolt torque 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 locking.
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 immediately.
ONLY use the driver’s side floor mat on the
driver’s side floor area. To check for interfer -
ence, 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 inter -
feres 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.
WARNING!
NEVER place any objects under the floor mat
(e.g., towels, keys, etc.). These objects could
change the position of the floor mat and may
cause interference 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
accelerator, 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 secured to your vehicle using
the floor mat fasteners by lightly pulling mat.
WARNING!

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267
SERVICING AND MAINTENANCE
SCHEDULED SERVICING
Your vehicle is equipped with an automatic oil
change indicator system. The oil change indicator
system will remind you that it is time to take your
vehicle in for scheduled maintenance.
Based on engine operation conditions, the oil
change indicator message will illuminate in the
instrument cluster. This means that service is
required for your vehicle. Operating conditions
such as frequent short-trips, trailer tow and
extremely hot or cold ambient temperatures will
influence when the “Change Oil” or “Oil Change
Required” message is displayed. Have your vehicle
serviced as soon as possible, within the next
500 miles (805 km).An authorized dealer will reset the oil change
indicator message after completing the scheduled
oil change. If a scheduled oil change is performed
by someone other than an authorized dealer, the
message can be reset by referring to the steps
described under Instrument Cluster Display
Ú
page 77.
NOTE:Under no circumstances should oil change
intervals exceed 10,000 miles (16,000 km), one
year or 350 hours of engine run time, whichever
comes first. The 350 hours of engine run or idle
time is generally only a concern for fleet
customers.
NOTE:The Oil Change Indicator will not illuminate under
these conditions. Once A Month Or Before A Long Trip:
Check engine oil level.
Check windshield washer fluid level.
Check the tire inflation pressures 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 reservoir,
and brake master cylinder reservoir, and fill as
needed.
Check function of all interior and exterior lights.
8

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282SERVICING AND MAINTENANCE
(Continued)
Do not overfill the coolant expansion bottle.
Check the coolant freeze point in the radiator
and in the coolant expansion bottle. If engine
coolant needs to be added, the contents of the
coolant expansion bottle must also be protected
against freezing.
If frequent engine coolant additions are
required, the cooling system should be pressure
tested for leaks.
Maintain engine coolant concentration at a
minimum of 50% OAT coolant (conforming to
MS.90032) and distilled water for proper corro-
sion protection of your engine which contains
aluminum components.
Make sure that the coolant expansion bottle
overflow hoses are not kinked or obstructed.
Keep the front of the radiator clean. If your
vehicle is equipped with air conditioning, keep
the front of the condenser clean.
Do not change the thermostat for Summer or
Winter operation. If replacement is ever neces -
sary, install ONLY the correct type thermostat.
Other designs may result in unsatisfactory
engine cooling performance, poor gas mileage,
and increased emissions.
BRAKE SYSTEM
In order to ensure brake system performance, all
brake system components should be inspected
periodically. For the proper maintenance intervals
Ú page 268.
Brake Master Cylinder
The fluid in the master cylinder should be checked
when performing under hood services or
immediately if the Brake Warning Light is
illuminated.
Be sure to clean the top of the master cylinder area
before removing the cap. If necessary, add fluid to
bring the fluid level up to the requirements
described on the brake fluid reservoir. With disc
brakes, fluid level can be expected to fall as the
brake pads wear. Brake fluid level should be
checked when pads are replaced. However, low
fluid level may be caused by a leak and a checkup
may be needed. Use only the manufacturer recommended brake
fluid Ú
page 324.
WARNING!

Riding the brakes can lead to brake failure and
possibly a collision. Driving with your foot resting or
riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear,
and possible brake damage. You would not have
your full braking capacity in an emergency.

WARNING!
Use only the manufacturer recommended
brake fluid Úpage 324. Using the wrong type
of brake fluid can severely damage your brake
system and/or impair its performance. The
proper type of brake fluid for your vehicle is
also identified on the original factory installed
hydraulic master cylinder reservoir.
To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that
has been in a tightly closed container. Keep
the master cylinder reservoir cap secured at
all times. Brake fluid in a open container
absorbs moisture from the air resulting in a
lower boiling point. This may cause it to boil
unexpectedly during hard or prolonged
braking, resulting in sudden brake failure.
This could result in a collision.
Overfilling the brake fluid reservoir can result
in spilling brake fluid on hot engine parts,
causing the brake fluid to catch fire. Brake
fluid can also damage painted and vinyl
surfaces, care should be taken to avoid its
contact with these surfaces.

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319
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION NUMBER (VIN)
The VIN is found on the left front corner of the
windshield and is visible from the outside of the
vehicle.
Vehicle Identification Number

NOTE:It is illegal to remove or alter the VIN.
BRAKE SYSTEM
Your vehicle is equipped with power assisted
brakes as standard equipment. In the event power
assist is lost for any reason (for example, repeated
brake applications with the engine off), the brakes will still function. However, the effort required to
brake the vehicle will be much greater than that
required with the power system operating.
If either of the two hydraulic systems lose normal
capability, the remaining system will still function
with some loss of overall braking effectiveness.
This will be evident by increased pedal travel
during application and greater pedal force
required to slow or stop. In addition, if the
malfunction is caused by an internal leak, as
the brake fluid in the master cylinder drops, the
Brake Warning Light will light.
WHEEL AND TIRE TORQUE SPECIFICATIONS
Proper lug nut/bolt torque is very important to
ensure that the wheel is properly mounted to the
vehicle. Any time a wheel has been removed and
reinstalled on the vehicle, the lug nuts/bolts
should be torqued using a properly calibrated
torque wrench using a six-sided (hex) deep wall
socket.
TORQUE SPECIFICATIONS
**Use only authorized dealer recommended lug
nuts/bolts and clean or remove any dirt or oil
before tightening.
Inspect the wheel mounting surface prior to
mounting the tire and remove any corrosion or
loose particles.
WARNING!
Driving a vehicle with the Brake Warning Light on
is dangerous. A significant decrease in braking
performance or vehicle stability during braking
may occur. It will take you longer to stop the
vehicle or will make your vehicle harder to
control. You could have a collision. Have the
vehicle checked immediately.
Lug Nut/Bolt
Torque
**Lug Nut/
Bolt SizeLug Nut/Bolt
Socket Size
100 Ft-Lb
(135 N·m) M12 x 1.25 19 mm
9

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320TECHNICAL SPECIFICATIONS

Wheel Mounting Surface

Tighten the lug nuts/bolts in a star pattern until
each nut/bolt has been tightened twice. Ensure
that the socket is fully engaged on the lug nut/bolt
(do not insert it halfway).

Torque Patterns
After 25 miles (40 km), check the lug nut/bolt
torque to be sure that all the lug nuts/bolts are
properly tightened.
FUEL REQUIREMENTS
While operating on gasoline with the required
octane number, hearing a light knocking sound
from the engine is not a cause for concern.
However, if the engine is heard making a heavy
knocking sound, see a dealer immediately. Use of
gasoline with a lower than recommended octane
number can cause engine failure and may void or
not be covered by the New Vehicle Limited
Warranty.
2.4L ENGINE
This engine is designed to meet all
emission regulations and provide
excellent fuel economy and performance
when using high quality unleaded regular
gasoline having a octane rating of 87 using the
(R+M)/2 method. The use of premium gasoline is
not recommended, as it will not provide any benefit
over regular gasoline in these engines.
REFORMULATED GASOLINE
Many areas of the country require the use of
cleaner-burning gasoline referred to as
“reformulated gasoline”. Reformulated gasoline
contains oxygenates and are specifically blended
to reduce vehicle emissions and improve air
quality.
The use of reformulated gasoline is recommended.
Properly blended reformulated gasoline will
provide improved performance and durability of
engine and fuel system components.
WARNING!
To avoid the risk of forcing the vehicle off the
jack, do not tighten the lug nuts/bolts fully until
the vehicle has been lowered. Failure to follow
this warning may result in personal injury.

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329
INDEX
A
Active Lane Management System................. 145Adaptive Cruise Control (ACC)........................ 116Adding Engine Coolant (Antifreeze)............... 280Additives, Fuel............................................... 322Air Bag........................................................... 214Air Bag Operation...................................... 215Air Bag Warning Light...................... 213, 216Driver Knee Air Bag................................... 219Enhanced Accident Response......... 224, 266Event Data Recorder (EDR)....................... 266Front Air Bag............................................. 216If Deployment Occurs................................ 223Knee Impact Bolsters................................ 219Maintaining Your Air Bag System.............. 227Maintenance............................................. 227Redundant Air Bag Warning Light.............214Side Air Bags............................................. 220Transporting Pets...................................... 240Air Bag Light........................................ 213, 241Air Cleaner, Engine
(Engine Air Cleaner Filter).............................. 274Air Conditioner Maintenance......................... 274Air Conditioner Refrigerant.................. 274, 275Air Conditioner System.................................. 274Air Conditioning Filter............................. 57, 275
Air Conditioning, Operating Tips....................... 56Air Filter........................................................ 274Air PressureTires......................................................... 306AlarmArm The System.......................................... 21Disarm The System..................................... 22Security Alarm...................................... 21, 92Alarm SystemSecurity Alarm............................................. 21Alterations/ModificationsVehicle......................................................... 10Antifreeze (Engine Coolant)................. 280, 323Disposal................................................... 281Anti-Lock Brake System (ABS)...................... 187Anti-Lock Warning Light................................... 92Arming SystemSecurity Alarm............................................. 21Assist, Hill Start............................................. 193Audio Systems (Radio).................................. 164Auto Down Power Windows............................. 62Auto Hold...................................................... 105Automatic Dimming Mirror............................... 37Automatic Door Locks...................................... 25Automatic Headlights....................................... 45Automatic High Beams.................................... 45
Automatic Temperature Control (ATC)..............56Automatic Transaxle..................................... 106Automatic Transmission................................ 107Adding Fluid..................................... 283, 324Fluid And Filter Change............................. 283Fluid Change............................................. 283Fluid Level Check...................................... 283Fluid Type........................................ 283, 324Special Additives...................................... 283Automatic Transmission Limp Home Mode......25Auxiliary Electrical Outlet (Power Outlet)..........59Axle Fluid....................................................... 324Axle Lubrication............................................ 324
B
Battery................................................... 90, 272Charging System Light.................................90Keyless Key Fob Replacement....................15Battery Saver Feature......................................88Belts, Seat.................................................... 241Blind Spot Monitoring................................... 194Body Mechanism Lubrication........................ 275B-Pillar Location............................................ 303Brake Assist System..................................... 188Brake Control System, Electronic.................. 188Brake Fluid.................................................... 324
11

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330 Brake System
...................................... 282, 319Anti-Lock (ABS).......................................... 319Fluid Check..................................... 282, 324Master Cylinder......................................... 282Parking...................................................... 103Warning Light.............................................. 90Brake/Transmission Interlock....................... 107Brightness, Interior Lights......................... 46, 47Bulb Replacement......................................... 291Bulbs, Light.................................................... 242
C
Camera, Rear...................................... 148, 150Capacities, Fuel............................................. 323Caps, Filler Fuel........................................................... 152Oil (Engine)................................................ 271Radiator (Coolant Pressure)...................... 281Car Washes................................................... 316Carbon Monoxide Warning............................ 243Cargo Area Cover............................................. 70Cargo Load Floor............................................. 70Cargo Tie-Downs....................................... 70, 71Cellular Phone............................................... 186Certification Label......................................... 153Chains, Tire.................................................... 311Change Oil Indicator........................................ 80Changing A Flat Tire....................................... 247Chart, Tire Sizing............................................ 299
Check Engine Light
(Malfunction Indicator Light)............................ 99Checking Your Vehicle For Safety................. 240Checks, Safety.............................................. 240Child Restraint.............................................. 228Child RestraintsBooster Seats........................................... 231Child Seat Installation.............................. 239How To Stow An unused ALR Seat Belt.... 236Infant And Child Restraints....................... 230Lower Anchors And TethersFor Children......................................... 233Older Children And Child Restraints......... 230Seating Positions...................................... 232Child Safety Locks........................................... 25Clean Air Gasoline......................................... 320CleaningWheels..................................................... 315Windshield Wiper Blades.......................... 275Climate Control................................................ 50Automatic.................................................... 50Manual........................................................ 53Coin Holder...................................................... 58Cold Weather Operation............................... 101Compact Spare Tire...................................... 310ConnectorUniversal Consumer Interface (UCI)............. 58Console............................................................ 58Floor............................................................ 58
Contract, Service........................................... 326Cooling Pressure Cap (Radiator Cap)............ 281Cooling System............................................. 279Adding Coolant (Antifreeze)...................... 280Coolant Level................................... 280, 281Cooling Capacity....................................... 323Disposal Of Used Coolant......................... 281Drain, Flush, And Refill............................. 280Inspection................................................. 281Points To Remember................................ 281Pressure Cap............................................ 281Radiator Cap............................................. 281Selection Of Coolant (Antifreeze)..... 280, 323Corrosion Protection..................................... 315Cruise Control (Speed Control)...................... 116Cruise Light............................................... 97, 98Customer Assistance.................................... 325Cybersecurity................................................ 164
D
Daytime Running Lights............................43, 44Defroster, Windshield................................... 241Dimmer SwitchHeadlight..............................................43, 44DipsticksOil (Engine)............................................... 272Disabled Vehicle Towing............................... 264DisposalAntifreeze (Engine Coolant)...................... 281

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