low oil pressure JEEP CHEROKEE 2020 Owner handbook (in English)

7
WINDSHIELD WIPERS AND WASHERS ..... 34
Windshield Wiper Operation............. 34
Rain Sensing Wipers —
If Equipped ................................... 35 Rear Window Wiper/Washer ............. 36
CLIMATE CONTROLS............................... 36
Automatic Climate Control
Overview ........................................ 37 Climate Control Functions ............... 45
Automatic Temperature
Control (ATC) ................................ 45 Operating Tips ............................... 46
WINDOWS ............................................ 47
Power Window Controls ................... 47
Auto-Up Feature With Anti-Pinch
Protection ..................................... 48 Window Lockout Switch .................. 48
POWER SUNROOF WITH POWER SHADE —
IF EQUIPPED ......................................... 49
Opening Sunroof ............................ 49
Venting Sunroof.............................. 50
Closing Sunroof .............................. 50
Wind Buffeting .............................. 50
Opening Power Shade ..................... 50
Closing Power Shade....................... 51
Pinch Protect Feature ..................... 51
Sunroof Maintenance ...................... 51
Ignition Off Operation ..................... 51
HOOD ....................................................52
Opening The Hood ......................... 52
Closing The Hood ........................... 52
LIFTGATE...............................................53
Opening ........................................ 53
Closing .......................................... 53
Hands-Free Liftgate —
If Equipped .................................. 54
INTERNAL EQUIPMENT ........................... 55
Power Outlets ............................... 55
Power Inverter — If Equipped ........ 56
ROOF LUGGAGE RACK — IF EQUIPPED ....57
ENVIRONMENTAL PROTECTION
SYSTEMS — IF EQUIPPED ...................... 58
GETTING TO KNOW YOUR INSTRUMENT
PANEL
INSTRUMENT CLUSTER DISPLAY ............ 59
Instrument Cluster Display Location
And Controls .................................. 59 Oil Change Indicator System —
If Equipped .................................. 60 Gear Shift Indicator (GSI) —
If Equipped ................................... 60 Instrument Cluster Display Selectable
Items ............................................ 61 Diesel Displays .............................. 61
Diesel Particulate Filter (DPF)
Messages ..................................... 61 Fuel System Messages .................... 62
WARNING LIGHTS AND MESSAGES ..........64
Red Warning Lights .........................64
Yellow Warning Lights .....................67
Yellow Indicator Lights ....................71
Green Indicator Lights .....................72
White Indicator Lights .....................73
Blue Indicator Lights .......................74
ONBOARD DIAGNOSTIC SYSTEM —
OBD II ..................................................74
Onboard Diagnostic System (OBD II)
Cybersecurity..................................75
SAFETY
SAFETY FEATURES .................................76
Anti-Lock Brake System (ABS) ........76
Electronic Brake Control (EBC)
System .........................................77
AUXILIARY DRIVING SYSTEMS ................87
Blind Spot Monitoring (BSM) —
If Equipped ....................................87 Forward Collision Warning (FCW) With
Mitigation — If Equipped ................90 Tire Pressure Monitoring
System (TPMS)...............................93
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GETTING TO KNOW YOUR INSTRUMENT PANEL
66
If the light continues to flash when the
vehicle is running, immediate service is
required. You may experience reduced
performance, an elevated/rough idle, or
engine stall and your vehicle may require
towing. The light will come on when the igni-
tion is placed in the ON/RUN or ACC/ON/
RUN position and remain on briefly as a bulb
check. If the light does not come on during
starting, have the system checked by an
authorized dealer.
— Engine Coolant Temperature Warning
Light
This light warns of an overheated engine
condition. If the engine coolant temperature
is too high, this indicator will illuminate and
a single chime will sound.
If the light turns on while driving, safely pull
over and stop the vehicle. If the A/C system
is on, turn it off. Also, shift the transmission
into NEUTRAL and idle the vehicle. If the
temperature reading does not return to
normal, turn the engine off immediately and
call for service. Refer to “If Your Engine
Overheats” in “In Case Of Emergency” for
further information.
— Hood Open Warning Light
This warning light will illuminate when the
hood is left open and not fully closed.
NOTE:
If the vehicle is moving, there will also be a
single chime.
— Liftgate Open Warning Light
This warning light will illuminate when the
liftgate is open.
NOTE:
If the vehicle is moving, there will also be a
single chime.
— Oil Pressure Warning Light
This warning light will illuminate to indicate
low engine oil pressure. A chime will sound
when this light turns on and a message “Oil
Pressure Low” will display in the message
screen. If the light turns on while driving,
pull the vehicle to the side of the road at a
safe location, stop the vehicle, shut off the
engine as soon as possible, check the oil
level and correct the oil level if it is low.
Contact an authorized dealer. Do not operate the vehicle until the cause is
corrected. This light may or may not indicate
how much oil is in the engine. The engine oil
level must be checked according to section
“Scheduling Service” Checking Oil Level. If
the oil level is low and corrected, the engine
can be restarted. Otherwise the vehicle
should be serviced by an authorized dealer.
NOTE:
The light may flash, a message in the center
of the dash may be displayed momentarily
“low oil pressure” and a chime may occur
during sharp cornering maneuvers. If this
happen it may indicate a low oil level. The oil
level should be checked and serviced by a
dealer if this occurs.
— Oil Temperature Warning Light

This warning light will illuminate to indicate
the engine oil temperature is high. If the light
turns on while driving, stop the vehicle and
shut off the engine as soon as possible. Wait for
oil temperature to return to normal levels.

CAUTION!
If the vehicle is driven with low oil levels
severe engine damage can occur. Have the
vehicle checked immediately.
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71
The system only warns the tire pressure is
low: it is not able to inflate them.
Yellow Indicator Lights — Active Speed Limiter Fault Indicator
Light — If Equipped
This warning light will illuminate to signal
when there is a fault detected with the Active
Speed Limiter.
— Forward Collision Warning Off
Indicator Light — If Equipped
This light indicates that Forward Collision
Warning is off.
— 4WD Low Indicator Light — If
Equipped
This light alerts the driver that the vehicle is
in the four-wheel drive LOW mode. The front
and rear driveshafts are mechanically locked
together forcing the front and rear wheels to
rotate at the same speed. Low range provides
a greater gear reduction ratio to provide
increased torque at the wheels.
Refer to “Four-Wheel Drive Operation” in
“Starting And Operating” for further informa -
tion on four-wheel drive operation and proper
use.
— Rear Axle Lock Indicator Light
This light indicates when the rear axle lock
has been activated.
— Rear Fog Indicator — If Equipped
This indicator light will illuminate when the
rear fog lights are on.
— Glow Plug Light — If Equipped
This vehicle will inhibit engine cranking
when the ambient temperature is less than
–22° F (–30° C) and the oil temperature
sensor reading indicates an engine block
heater has not been used. The Glow Plug
light will flash during in cold weather for up
to ten seconds.
If equipped with a block heater harness the
message “Plug In Engine Heater”, will be
displayed in the instrument cluster when the
ambient temperature is below 5°F (-15° C) at
the time the engine is shut off as a reminder
to avoid possible crank delays at the next
cold start.
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 operation
or sensor damage may result when using
replacement equipment that is not of the
same size, type, and/or style. Aftermarket
wheels can cause sensor damage. Using
aftermarket tire sealants may cause the
Tire Pressure Monitoring System (TPMS)
sensor to become inoperable. After using
an aftermarket tire sealant it is
recommended that you take your vehicle to
an authorized dealer to have your sensor
function checked.
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STARTING AND OPERATING
140
during the pre-heat process, When the
engine “Wait To Start” telltale goes off the
engine will automatically crank.
3. The system will automatically engage thestarter 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 ENGINE START/STOP button again.
5. Check that the oil pressure warning light has turned off.
6. Release the parking brake.Engine Warm Up
Avoid full throttle operation when the engine
is cold. When starting a cold engine, bring
the engine up to operating speed slowly to
allow the oil pressure to stabilize as the
engine warms up.
NOTE:
High-speed, no-load running of a cold engine
can result in excessive white smoke and poor
engine performance. No-load engine speeds
should be kept under 1,200 RPM during the
warm-up period, especially in cold ambient
temperature conditions.
ENGINE BREAK-IN
RECOMMENDATIONS
A long break-in period is not required for the
engine and drivetrain (transmission and axle)
in your vehicle.
Drive moderately during the first 300 miles
(500 km). After the initial 60 miles
(100 km), speeds up to 50 or 55 mph (80 or
90 km/h) are desirable. While cruising, brief full-throttle accelera
-
tion within the limits of local traffic laws
contributes to a good break-in. Wide-open
throttle acceleration in low gear can be detri -
mental and should be avoided.
The engine oil installed in the engine at the
factory is a high-quality energy conserving
type lubricant. Oil changes should be consis -
tent with anticipated climate conditions
under which vehicle operations will occur.
For the recommended viscosity and quality
grades, refer to “Fluids And Lubricants” in
“Technical Specifications”.
NOTE:
A new engine may consume some oil during
its first few thousand miles (kilometers) of
operation. This should be considered a
normal part of the break-in and not inter -
preted as a problem.
CAUTION!
To prevent damage to the starter, do not
crank continuously for more than 10
seconds at a time. Wait 10 to 15 seconds
before trying again.
CAUTION!
Never use Non-Detergent Oil or Straight
Mineral Oil in the engine or damage may
result.
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IN CASE OF EMERGENCY
206
3. Place the transmission in PARK (P) (autotransmission) or in Gear (manual trans -
mission) and place the ignition in the
OFF position.
4. Apply the parking brake.
(B) Setting Up To Use Tire Service Kit:
1. Push in the Mode Select Knob and turn to the Sealant Mode position.
2. Uncoil the Sealant Hose and then remove the cap from the fitting at the end of the
hose.
3. Place the Tire Service Kit flat on the ground next to the deflated tire.
4. Remove the cap from the valve stem and then screw the fitting at the end of the
Sealant Hose onto the valve stem.
5. Uncoil the Power Plug and insert the plug into the vehicle’s 12 Volt power outlet.
NOTE:
Do not remove foreign objects (e.g., screws
or nails) from the tire.
(C) Injecting Tire Service Kit Sealant Into
The Deflated Tire:
Always start the engine before turning ON
the Tire Service Kit.
NOTE:
Manual transmission vehicles must have the
parking brake engaged and the gear selector
in NEUTRAL.
After pushing the Power Button, the
sealant (white fluid) will flow from the
Sealant Bottle through the Sealant Hose
and into the tire.
NOTE:
Sealant may leak out through the puncture in
the tire. If the sealant (white fluid) does not flow within
0 – 10 seconds through the Sealant Hose:
1. Push the Power Button to turn Off the
Tire Service Kit. Disconnect the Sealant
Hose from the valve stem. Make sure the
valve stem is free of debris. Reconnect
the Sealant Hose to the valve stem.
Check that the Mode Select Knob is in
the Sealant Mode position and not Air
Mode. Push the Power Button to turn On
the Tire Service Kit.

2. Connect the Power Plug to a different 12 Volt power outlet in your vehicle or another
vehicle, if available. Make sure the engine is
running before turning ON the Tire Service
Kit.

3. The Sealant Bottle may be empty due to previous use. Call for assistance.
NOTE:
If the Mode Select Knob is on Air Mode and
the pump is operating, air will dispense from
the Air Pump Hose only, not the Sealant
Hose.
If the sealant (white fluid) does flow through the
Sealant Hose: 1. Continue to operate the pump until
sealant is no longer flowing through the
hose (typically takes 30 - 70 seconds). As the sealant flows through the Sealant
Hose, the Pressure Gauge can read as
high as 70 psi (4.8 Bar). The Pressure
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IN CASE OF EMERGENCY
208
(D) Drive Vehicle:
Immediately after injecting sealant and
inflating the tire, drive the vehicle five miles
(8 km) or 10 minutes to ensure distribution
of the Tire Service Kit Sealant within the tire.
Do not exceed 50 mph (80 km/h).
(E) After Driving:
Pull over to a safe location. Refer to “(A)
Whenever You Stop To Use Tire Service Kit”
in this section, before continuing.
1. Push in the Mode Select Knob and turnto the Air Mode position.
2. Uncoil the power plug and insert the plug into the vehicle's 12 Volt power outlet. 3. Uncoil the Air Pump Hose (black in color)
and screw the fitting at the end of hose
onto the valve stem.
4. Check the pressure in the tire by reading the Pressure Gauge.
If tire pressure is less than 19 psi (1.3 Bar):
The tire is too badly damaged. Do not
attempt to drive the vehicle further. Call for
assistance.
If the tire pressure is 19 psi (1.3 Bar) or higher:
1. Push the Power Button to turn on Tire Service Kit and inflate the tire to the
pressure indicated on the tire and
loading information label on the
driver-side door opening.
NOTE:
If the tire becomes over-inflated, push the
Deflation Button to reduce the tire pressure
to the recommended inflation pressure
before continuing.
2. Disconnect the Tire Service Kit from the valve stem, reinstall the cap on the valve
stem and unplug from 12 Volt outlet. 3. Place the Tire Service Kit in its proper
storage area in the vehicle.
4. Have the tire inspected and repaired or replaced at the earliest opportunity at an
authorized dealer or tire service center.
5. Remove the Speed Limit sticker from the instrument panel after the tire has been
repaired.
6. Replace the Sealant Bottle and Sealant Hose assembly at an authorized dealer as
soon as possible. Refer to “Sealant
Bottle And Hose Replacement” in this
section for further information.
NOTE:
When having the tire serviced, advise the
authorized dealer or service center that the
tire has been sealed using the Tire Service
Kit.
WARNING!
Tire Service Kit is not a permanent flat tire
repair. Have the tire inspected and
repaired or replaced after using Tire
Service Kit. Do not exceed 50 mph
(80 km/h) until the tire is repaired or
replaced. Failure to follow this warning
can result in injuries that are serious or
fatal to you, your passengers, and others
around you.
WARNING!
You must always indicate that the tire was
repaired using the Tire Service Kit. Give
the booklet to the technicians who will be
handling the tire that was treated using
the Tire Service Kit.
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219
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 oil and filter.
Rotate the tires.
Rotate at the first sign of
irregular wear, even if it occurs before the
oil indicator system turns on.
Inspect battery and clean and tighten
terminals as required.
Inspect the CV/Universal joints.
Inspect brake pads, shoes, rotors, drums,
hoses and park brake.
Inspect engine cooling system protection
and hoses.
Inspect exhaust system.
Inspect engine air cleaner if using in dusty
or off-road conditions. Maintenance Plan — Gasoline Engine
NOTE:
Once you have carried out the last interven
-
tion in the table, continue with the sched -
uled servicing, maintaining the frequency
indicated in the plan by marking each oper -
ation with a dot or dedicated note. Simply
restarting the maintenance from the start of
the plan may cause the allowed interval to be
exceeded for some operations.
CAUTION!
Failure to perform the required
maintenance items may result in damage
to the vehicle.
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225
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.
Control and recovery of additive level for
AdBlue® Diesel emissions (UREA) (if
equipped) 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.
Inspect the CV/Universal joints.
Demanding Vehicle Use
Restore additive level for AdBlue® Diesel
emissions (UREA) (if equipped), when the
lamp is illuminated or the message on the
instrument panel.
Maintenance Plan — Diesel Engine
NOTE:
Once you have carried out the last interven -
tion in the table, continue with the sched -
uled servicing, maintaining the frequency
indicated in the plan by marking each oper -
ation with a dot or dedicated note. Simply
restarting the maintenance from the start of
the plan may cause the allowed interval to be
exceeded for some operations.
CAUTION!
Failure to perform the required
maintenance items may result in damage
to the vehicle.
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233
(Continued)
Checking Oil Level
To ensure proper engine lubrication, the
engine oil must be maintained at the correct
level. Check the oil level at regular intervals,
such as every fuel stop. The best time to
check the engine oil level is about five
minutes after a fully warmed up engine is
shut off.
Checking the oil while the vehicle is on level
ground will improve the accuracy of the oil
level readings.There are four possible dipstick types,
Crosshatched zone.
Crosshatched zone marked SAFE.
Crosshatched zone marked with MIN at
the low end of the range and MAX at the
high end of the range.
Crosshatched zone marked with dimples
at the MIN and the MAX ends of the range.
NOTE:
Always maintain the oil level within the
crosshatch markings on the dipstick.
Adding 1 quart (1.0 liters) of oil when the
reading is at the low end of the dipstick
range will raise the oil level to the high end
of the range marking.
WARNING!
Never smoke while working in the engine
compartment: gas and inflammable
vapors may be present, with the risk of
fire.
Be very careful when working in the
engine compartment when the engine is
hot: you may get burned. Do not get too
close to the radiator cooling fan: the
electric fan may start; danger of injury.
Scarves, ties and other loose clothing
might be pulled by moving parts.
CAUTION!
Be careful not to confuse the various
types of fluids while topping up: they are
not compatible with each other! Topping
up with an unsuitable fluid could
severely damage your car.
The oil level must never exceed the MAX
mark.
Always top up using engine oil of the
same specifications as that already in
the engine.
If the engine oil is being topped up, wait
for the engine to cool down before loos-
ening the filler cap, particularly for vehi -
cles with aluminium cap (if equipped).
WARNING: risk of burns!
Overfilling or underfilling the crankcase
will cause aeration or loss of oil pressure.
This could damage your engine.
CAUTION! (Continued)
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TECHNICAL SPECIFICATIONS
256
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
high quality 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.
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 Pattern
After 25 miles (40 km), check the lug nut/
bolt torque to be sure that all the lug nuts/
bolts are properly seated against the wheel.
WHEELS
Refer to the tire placard label located on the
door sill of the vehicle or to the Registration
Document for the tire size and pressure.
Refer to “Tires” in the “Servicing and main -
tenance” for further information.
WEIGHTS
For further information refer to “Vehicle
Loading” in the “Starting And Operating”
chapter.
Lug Nut/Bolt
Torque **Lug Nut/
Bolt SizeLug Nut/Bolt
Socket Size
100 Ft-Lbs
(135 N·m) M12 x 1.25 17 mm
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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