2019 JEEP COMPASS catalytic converter

Each time the ignition is turned to ON/RUN
or ACC/ON/RUN, the ESC system will be on,
even if it was turned off previously.
— Fuel Cutoff Warning Light —
If Equipped
This warning light will illuminate after an
accident has occurred, and the system has
shut the fuel off.
— LaneSense Warning Light —
If Equipped
The LaneSense Warning Light will be solid
yellow when the vehicle is approaching a lane
marker. The warning light will flash when the
vehicle is crossing the lane marker.
Refer to “LaneSense — If Equipped" in
“Starting And Operating” for further informa-
tion.
— Service LaneSense Warning Light
— If Equipped
This warning light will illuminate when the
LaneSense system is not operating and re-
quires service. Please see an authorized
dealer.
— Low Coolant Level Warning Light
This telltale will turn on to indicate the ve-
hicle coolant level is low.
— Low Fuel Warning Light
Depending on whether the tank size is
13.5 gal (51 L) or 15.8 gal (60 L), the Low
Fuel Indicator Light will turn on when the fuel
level goes below 1.5 gal (5.6 L) or 1.7 gal
(6.6 L) respectively.
— Low Washer Fluid Warning Light —
If Equipped
This warning light will illuminate when the
windshield washer fluid is low.
— Engine Check/Malfunction
Indicator Warning Light (MIL)
The Engine Check/Malfunction Indicator
Light (MIL) is a part of an Onboard Diagnostic
System called OBD II that monitors engine
and automatic transmission control systems.
This warning light will illuminate when the
ignition is in the ON/RUN position beforeengine start. If the bulb does not come on
when turning the ignition switch from OFF to
ON/RUN, have the condition checked
promptly.
Certain conditions, such as a loose or missing
gas cap, poor quality fuel, etc., may illumi-
nate the light after engine start. The vehicle
should be serviced if the light stays on
through several typical driving styles. In most
situations, the vehicle will drive normally and
will not require towing.
When the engine is running, the MIL may
flash to alert serious conditions that could
lead to immediate loss of power or severe
catalytic converter damage. The vehicle
should be serviced by an authorized dealer as
soon as possible if this occurs.WARNING!
A malfunctioning catalytic converter, as
referenced above, can reach higher tem-
peratures than in normal operating condi-
tions. This can cause a fire if you drive
slowly or park over flammable substances
such as dry plants, wood, cardboard, etc.
69

WARNING!
This could result in death or serious injury
to the driver, occupants or others.
CAUTION!
Prolonged driving with the Malfunction
Indicator Light (MIL) on could cause dam-
age to the vehicle control system. It also
could affect fuel economy and driveability.
If the MIL is flashing, severe catalytic
converter damage and power loss will soon
occur. Immediate service is required.
— AdBlue (UREA) Injection System
Failure Warning Light — If Equipped
This warning light will illuminate along with a
dedicated message on the display (If
Equipped) if an unknown fluid not conform-
ing with acceptable characteristics is in-
serted, or if an average consumption of Ad-
Blue (UREA) over 50% is detected. Contact
an authorized dealer as soon as possible.If the problem is not solved, a specific mes-
sage will appear on the Instrument Cluster
Display whenever a certain threshold is
reached until it will no longer be possible to
start the engine.
When about 125 mi (200 km) are remaining
before the AdBlue (UREA) tank is empty, a
continuous dedicated message will appear on
the instrument panel, accompanied by a
buzzer sound (If Equipped).
— Service Adaptive Cruise Control
Warning Light — If Equipped
This light will turn on when a ACC is not
operating and needs service. Refer to “Adap-
tive Cruise Control (ACC)” in “Starting And
Operating” for further information.
SERV4WD— Service 4WD Warning Light —
If Equipped
This warning light will illuminate to signal a
fault with the 4WD system. If the light stays
on or comes on during driving, it means that
the 4WD system is not functioning properly
and that service is required. We recommend
you drive to the nearest service center and
have the vehicle serviced immediately.
— Service Forward Collision Warning
(FCW) Light — If Equipped
This warning light will illuminate to indicate
a fault in the Forward Collision Warning Sys-
tem. Contact an authorized dealer for service.
Refer to "Forward Collision Warning (FCW)" in
"Safety" for further information.
— Service Stop/Start System Warning
Light — If Equipped
This warning light will illuminate when the
Stop/Start system is not functioning properly
and service is required. Contact an autho-
rized 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.
GETTING TO KNOW YOUR INSTRUMENT PANEL
70

CAUTION!
• Prolonged driving with the MIL on could
cause further damage to the emission
control system. It could also affect fuel
economy and driveability. The vehicle
must be serviced before any emissions
tests can be performed.
• If the MIL is flashing while the vehicle is
running, severe catalytic converter dam-
age and power loss will soon occur. Im-
mediate service is required.
Onboard Diagnostic System (OBD II)
Cybersecurity
Your vehicle is required to have an Onboard
Diagnostic system (OBD II) and a connection
port to allow access to information related to
the performance of your emissions controls.
Authorized service technicians may need to
access this information to assist with the
diagnosis and service of your vehicle and
emissions system.
WARNING!
• ONLY an authorized service technician
should connect equipment to the OBD II
connection port in order to read the VIN,
diagnose, or service your vehicle.
• If unauthorized equipment is connected
to the OBD II connection port, such as a
driver-behavior tracking device, it may:
• Be possible that vehicle systems,
including safety related systems,
could be impaired or a loss of ve-
hicle control could occur that may
result in an accident involving seri-
ous injury or death.
• Access, or allow others to access,
information stored in your vehicle
systems, including personal infor-
mation.
For further information, refer to “Cybersecu-
rity” in “Multimedia”.
EMISSIONS INSPECTION
AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal require-
ment to pass an inspection of your vehicle's
emissions control system. Failure to pass
could prevent vehicle registration.
Normally, the OBD II system will
be ready. The OBD II system may
notbe ready if your vehicle was
recently serviced, recently had a dead battery
or a battery replacement. If the OBD II sys-
tem should be determined not ready for the
I/M test, your vehicle may fail the test.
Your vehicle has a simple ignition actuated
test, which you can use prior to going to the
test station. To check if your vehicle's OBD II
system is ready, you must do the following:
1. Cycle the ignition switch to the ON posi-
tion, but do not crank or start the engine.
NOTE:
If you crank or start the engine, you will
have to start this test over.
77

Operation of the wipers on dry glass for long
periods may cause deterioration of the wiper
blades. Always use washer fluid when using
the wipers to remove salt or dirt from a dry
windshield or rear window.
Avoid using the wiper blades to remove frost
or ice from the windshield or rear window.
Make sure that they are not frozen to the
glass before turning them on to avoid damag-
ing the blade. Keep the wiper blade out of
contact with petroleum products such as en-
gine oil, gasoline, etc.
NOTE:
Life expectancy of wiper blades varies de-
pending on geographical area and frequency
of use. Poor performance of blades may be
present with chattering, marks, water lines or
wet spots. If any of these conditions are
present, clean the wiper blades or replace as
necessary.
Exhaust System
The best protection against carbon monoxide
entry into the vehicle body is a properly
maintained engine exhaust system.If you notice a change in the sound of the
exhaust system; or if the exhaust fumes can
be detected inside the vehicle; or when the
underside or rear of the vehicle is damaged;
have an authorized technician inspect the
complete exhaust system and adjacent body
areas for broken, damaged, deteriorated, or
mispositioned parts. Open seams or loose
connections could permit exhaust fumes to
seep into the passenger compartment. In
addition, have the exhaust system inspected
each time the vehicle is raised for lubrication
or oil change. Replace as required.
WARNING!
• Exhaust gases can injure or kill. They
contain carbon monoxide (CO), which is
colorless and odorless. Breathing it can
make you unconscious and can eventu-
ally poison you. To avoid breathing CO,
refer to “Safety Tips” in “Safety” for
further information.
•
A hot exhaust system can start a fire if
you park over materials that can burn.
Such materials might be grass or leaves
coming into contact with your exhaust
WARNING!
system. Do not park or operate your ve-
hicle in areas where your exhaust system
can contact anything that can burn.
CAUTION!
• The catalytic converter requires the use
of unleaded fuel only. Leaded gasoline
will destroy the effectiveness of the
catalyst as an emissions control device
and may seriously reduce engine perfor-
mance and cause serious damage to the
engine.
• Damage to the catalytic converter can
result if your vehicle is not kept in proper
operating condition. In the event of en-
gine malfunction, particularly involving
engine misfire or other apparent loss of
performance, have your vehicle serviced
promptly. Continued operation of your
vehicle with a severe malfunction could
cause the converter to overheat, result-
ing in possible damage to the converter
and vehicle.
SERVICING AND MAINTENANCE
246

Under normal operating conditions, the cata-
lytic converter will not require maintenance.
However, it is important to keep the engine
properly tuned to assure proper catalyst opera-
tion and prevent possible catalyst damage.
NOTE:
Intentional tampering with emissions control
systems can result in civil penalties being
assessed against you.
In unusual situations involving grossly mal-
functioning engine operation, a scorching
odor may suggest severe and abnormal cata-
lyst overheating. If this occurs, stop the ve-
hicle, turn off the engine and allow it to cool.
Service, including a tune-up to manufactur-
er's specifications, should be obtained imme-
diately.
To minimize the possibility of catalytic con-
verter damage:
• Do not interrupt the ignition when the
transmission is in gear and the vehicle is in
motion.
• Do not try to start the vehicle by pushing or
towing the vehicle.• Do not idle the engine with any ignition
components disconnected or removed,
such as when diagnostic testing, or for
prolonged periods during very rough idle or
malfunctioning operating conditions.Cooling System
WARNING!
• You or others can be badly burned by hot
engine coolant (antifreeze) or steam
from your radiator. If you see or hear
steam coming from under the hood, do
not open the hood until the radiator has
had time to cool. Never open a cooling
system pressure cap when the radiator or
coolant bottle is hot.
• Keep hands, tools, clothing, and jewelry
away from the radiator cooling fan when
the hood is raised. The fan starts auto-
matically and may start at any time,
whether the engine is running or not.
• When working near the radiator cooling
fan, turn the ignition to the OFF mode.
The fan is temperature controlled and
can start at any time the ignition is in the
ON mode.
Coolant Checks
Check engine coolant (antifreeze) protection
every 12 months (before the onset of freezing
weather, where applicable). If the engine
coolant (antifreeze) is dirty or rusty in appear-
ance, the system should be drained, flushed
and refilled with fresh engine coolant (anti-
freeze). Check the front of the A/C condenser
for any accumulation of bugs, leaves, etc. If
dirty, clean by gently spraying water from a
garden hose vertically down the face of the
condenser.
Cooling System Pressure Cap
The cap must be fully tightened to prevent
loss of engine coolant (antifreeze), and to
ensure that engine coolant (antifreeze) will
return to the radiator from the coolant expan-
sion bottle/recovery tank if so equipped.
The cap should be inspected and cleaned if
there is any accumulation of foreign material
on the sealing surfaces.
247

Fuel IconsWhat It Means
Diesel fuel containing up to7%(V/V) Fatty Acid Methyl Esters (FAME)EN590compliant fuel
Diesel fuel containing up to 10 % (V/V) Fatty Acid Methyl Esters (FAME)EN16734compliant fuel
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your
vehicle’s performance:
• The use of leaded gasoline is prohibited
by law. Using leaded gasoline can impair
engine performance and damage the
emissions control system.
• An out-of-tune engine or certain fuel or
ignition malfunctions can cause the
catalytic converter to overheat. If you
notice a pungent burning odor or some
light smoke, your engine may be out of
CAUTION!
tune or malfunctioning and may require
immediate service. Contact an autho-
rized dealer for service assistance.
• The use of fuel additives, which are now
being sold as octane enhancers, is not
recommended. Most of these products
contain high concentrations of metha-
nol. Fuel system damage or vehicle per-
formance problems resulting from the
use of such fuels or additives is not the
responsibility of the manufacturer and
may void or not be covered under the
New Vehicle Limited Warranty.NOTE:
Intentional tampering with the emissions
control system can result in civil penalties
being assessed against you.
271