brake fluid JEEP PATRIOT 2021 Owner handbook (in English)

WARNING!(Continued)
•Always make sure that objects cannot fall
into the driver footwell while the vehicle is
moving. Objects can become trapped un-
der the brake pedal and accelerator pedal
causing a loss of vehicle control.
•If required, mounting posts must be prop-
erly installed, if not equipped from the
factory.
Failure to properly follow floor mat installa-
tion or mounting can cause interference with
the brake pedal and accelerator pedal opera-
tion causing loss of control of the vehicle.
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 the tread 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 locking.
Fluid Leaks
Check area under vehicle after overnight park-
ing for fuel, engine coolant, oil, or other fluid
leaks. Also, if gasoline fumes are detected or if
fuel, power steering fluid (if equipped), or brake
fluid leaks are suspected. The cause should be
located and corrected immediately.
60

Brake Warning Light
Red Telltale Light What It Means
Brake Warning Light
This light monitors various brake functions, including brake fluid level and parking brake application. If the brake light turns
on it may indicate that the parking brake is applied, that the brake fluid level is low, or that there is a problem with the
anti-lock brake system reservoir.
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.
124

•AutoStick (CVT) — If Equipped.....................177•FOUR-WHEEL DRIVE OPERATION — IF EQUIPPED . . . . . . . . . .178
•ON-ROAD DRIVING TIPS . . . . . . . . . . . . . . . . . .........179
•OFF-ROAD DRIVING TIPS..........................179
•When To Use Low (L Off-Road) With The 4WD Lock Lever Engaged —
If Equipped..................................179
•Driving In Snow, Mud And Sand.....................180
•Hill Climbing.................................181
•Driving Through Water...........................182
•After Driving Off-Road...........................183
•POWER STEERING . . . . . . . . . .....................184•Power Steering Fluid Check.......................184•PARKING BRAKE . ..............................185
•BRAKE SYSTEM . . . . . . . . . . . . . . . . . ..............186
•ELECTRONIC BRAKE CONTROL SYSTEM . . . . . . . . . ......187
•Electronic Brake Force Distribution (EBD)...............187
•Brake System Warning Light.......................187
•Anti-Lock Brake System (ABS)......................187
•Anti-Lock Brake Warning Light......................188
•Brake Assist System (BAS)........................189
•Hill Start Assist (HSA)...........................189
•Traction Control System (TCS)......................191
•Electronic Stability Control (ESC)....................191
•Electronic Roll Mitigation (ERM).....................194
•Hill Descent Control (HDC) — If Equipped...............195
•TIRES — GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . .195•Tire Pressure................................195
162

NOTE:
Even if the transmission can be reset, we
recommend that you visit your authorized
dealer at your earliest possible conve-
nience. Your authorized dealer has diagnos-
tic equipment to determine if the problem
could recur.
If the transmission cannot be reset, authorized
dealer service is required.
Overdrive Operation
The automatic transmission includes an elec-
tronically controlled Overdrive (sixth gear). The
transmission will automatically shift into Over-
drive if the following conditions are present:
•The gear selector is in the DRIVE position.
•The transmission fluid has reached an ad-
equate temperature.
•The engine coolant has reached an ad-
equate temperature.
•The vehicle speed is sufficiently high.
•The driver is not heavily pressing the
accelerator.Torque Converter Clutch
A feature designed to improve fuel economy
has been included in the automatic transmis-
sion on your vehicle. A clutch within the torque
converter engages automatically at calibrated
speeds. This may result in a slightly different
feeling or response during normal operation in
the upper gears. When the vehicle speed drops
or during some accelerations, the clutch auto-
matically disengages.
NOTE:
Engagement of the torque converter clutch
is inhibited at very cold temperatures. Be-
cause the engine speed is higher when the
torque converter clutch is not engaged, it
may seem as if the transmission is not
shifting into Overdrive when cold. This is
normal. The torque converter clutch will
function normally once the transmission is
sufficiently warm.
Continuously Variable Automatic
Transmission (CVT) — If Equipped
The transmission gear position display (located
in the instrument cluster) indicates the transmis-
sion gear range. You must press the brakepedal to move the gear selector out of PARK
(refer to “Brake/Transmission Shift Interlock
System” in this section). To drive, move the gear
selector from PARK or NEUTRAL to the DRIVE
position.
NOTE:
The Continuously Variable Automatic Trans-
mission (CVT) changes ratios in a continu-
ous manner. This may sometimesfeelas if
it is slipping, but this is normal and does not
harm anything.
Only shift from DRIVE to PARK or REVERSE
when the accelerator pedal is released and the
vehicle is stopped. Be sure to keep your foot on
the brake pedal when shifting between these
gears.
The transmission gear selector has only PARK,
REVERSE, NEUTRAL, and DRIVE shift posi-
tions. Manual shifts can be made using the
AutoStick shift control (refer to"AutoStick"in
this section). Moving the gear selector to the left
or right (-/+) while in the DRIVE position will
manually select from a set of predefined trans-
mission gear ratios, and will display the current
gear in the instrument cluster as 1, 2, 3, etc.
173

WARNING!
Do not descend a steep grade in NEUTRAL.
Use vehicle brakes in conjunction with en-
gine braking. Descending a grade too fast
could cause you to lose control and be
seriously injured or killed.
Driving Across An Incline
If at all possible avoid driving across an incline.
If it is necessary, know your vehicle’s abilities.
Driving across an incline places more weight on
the down-hill wheels, which increases the pos-
sibilities of a down-hill slide or rollover. Make
sure the surface has good traction with firm and
stable soils. If possible transverse the incline at
an angle heading slightly up or down.
WARNING!
Driving across an incline increases the risk of
a rollover, which may result in severe injury.
If You Stall Or Begin To Lose Headway
If you stall or begin to lose headway while
climbing a steep hill, allow your vehicle to cometo a stop and immediately apply the brake.
Restart the engine and shift to REVERSE. Back
slowly down the hill allowing engine and hill
descent braking to control the descent and
apply your brakes if necessary, but do not allow
the tires to lock.
WARNING!
If the engine stalls or you lose headway or
cannot make it to the top of a steep hill or
grade, never attempt to turn around. To do so
may result in tipping and rolling the vehicle,
which may result in severe injury. Always
back carefully straight down a hill in RE-
VERSE gear. Never back down a hill in
NEUTRAL using only the vehicle brakes.
Never drive diagonally across a hill, always
drive straight up or down.
Driving Through WaterExtreme care should be taken crossing any
type of water. Water crossings should be
avoided if possible, and only be attempted
when necessary in a safe responsible manner.You should only drive through areas which are
designated and approved. You should tread
lightly and avoid damage to the environment.
You should know your vehicles abilities and be
able to recover it if something goes wrong. You
should never stop or shut a vehicle off when
crossing deep water unless you ingested water
into the engine air intake. If the engine stalls, do
not attempt to restart it. Determine if it has
ingested water first. The key to any crossing is
low and slow. You want to use low (L Off-Road
[if equipped] ) with the 4WD LOCK engaged
and proceed very slowly with a constant slow
speed (3-5 mph [5–8 km/h] maximum) and light
throttle. Keep the vehicle moving; do not try to
accelerate through the crossing. After crossing
any water higher than the bottom of the axle
differentials, you should inspect all of the ve-
hicle fluids for signs of water ingestion.
CAUTION!
Water ingestion into the transaxle, transfer
case, engine or vehicle interior can occur if
you drive too fast or through too deep of
(Continued)
182

WARNING!
Abrasive material in any part of the brakes
may cause excessive wear or unpredictable
braking. You might not have full braking
power when you need it to prevent a colli-
sion. If you have been operating your vehicle
in dirty conditions, get your brakes checked
and cleaned as necessary.
•If you experience unusual vibration after driv-
ing in mud, slush or similar conditions, check
the wheels for impacted material. Impacted
material can cause a wheel imbalance and
freeing the wheels of it will correct the
situation.
POWER STEERING
The standard power steering system will give
you good vehicle response and increased ease
of maneuverability in tight spaces. The system
will provide mechanical steering capability if
power assist is lost.
If for some reason the power assist is inter-
rupted, it will still be possible to steer yourvehicle. Under these conditions, you will ob-
serve a substantial increase in steering effort,
especially at very low vehicle speeds and dur-
ing parking maneuvers.
NOTE:
•Increased noise levels at the end of the
steering wheel travel are considered nor-
mal and do not indicate that there is a
problem with the power steering system.
•Upon initial start-up in cold weather, the
power steering pump may make noise for
a short amount of time. This is due to the
cold, thick fluid in the steering system.
This noise should be considered normal,
and it does not in any way damage the
steering system.CAUTION!
Prolonged operation of the steering system
at the end of the steering wheel travel will
increase the steering fluid temperature and it
should be avoided when possible. Damage
to the power steering pump may occur.
Power Steering Fluid CheckChecking the power steering fluid level at a
defined service interval is not required. The fluid
should only be checked if a leak is suspected,
abnormal noises are apparent, and/or the sys-
tem is not functioning as anticipated. Coordi-
nate inspection efforts through an authorized
dealer.
CAUTION!
Do not use chemical flushes in your power
steering system as the chemicals can dam-
age your power steering components. Such
damage is not covered by the New Vehicle
Limited Warranty.
WARNING!
Fluid level should be checked on a level
surface and with the engine off to prevent
injury from moving parts and to ensure ac-
184

WARNING!(Continued)
curate fluid level reading. Do not overfill. Use
only manufacturer’s recommended power
steering fluid.
If necessary, add fluid to restore to the proper
indicated level. With a clean cloth, wipe any
spilled fluid from all surfaces. Refer to “Fluids,
Lubricants, And Genuine Parts” in “Maintaining
Your Vehicle” for further information.
PARKING BRAKE
Before leaving the vehicle, make sure that the
parking brake is fully applied. Also, be certain to
leave an automatic transmission in PARK, or
manual transmission in REVERSE or first gear.
The parking brake lever is located in the center
console. To apply the parking brake, pull the
lever up as firmly as possible. To release the
parking brake, pull the lever up slightly, press
the center button, then lower the lever com-
pletely.When the parking brake is applied with the
ignition switch in the ON position, the “Brake
Warning Light” in the instrument cluster will
illuminate.
NOTE:
•When the parking brake is applied and the
automatic transmission is placed in gear,
the “Brake Warning Light” will flash. If
vehicle speed is detected, a chime will
sound to alert the driver. Fully release the
parking brake before attempting to move
the vehicle.•This light only shows that the parking
brake is applied. It does not show the
degree of brake application.
When parking on a hill, it is important to turn the
front wheels toward the curb on a downhill
grade and away from the curb on an uphill
grade. For vehicles equipped with an automatic
transmission, apply the parking brake before
placing the gear selector in PARK, otherwise
the load on the transmission locking mecha-
nism may make it difficult to move the gear
selector out of PARK. The parking brake should
always be applied whenever the driver is not in
the vehicle.
Parking Brake Lever
185

WARNING!
•Never leave children alone in a vehicle, or
with access to an unlocked vehicle. Allow-
ing children to be in a vehicle unattended
is dangerous for a number of reasons. A
child or others could be seriously or fatally
injured. Children should be warned not to
touch the parking brake, brake pedal or the
gear selector.
•Do not leave the Key Fob in or near the
vehicle, or in a location accessible to chil-
dren. A child could operate power win-
dows, other controls, or move the vehicle.
•Be sure the parking brake is fully disen-
gaged before driving; failure to do so can
lead to brake failure and a collision.
•
Always fully apply the parking brake when
leaving your vehicle, or it may roll and cause
damage or injury. Also, be certain to leave a
manual transmission in REVERSE or first
gear. Failure to do so may cause the vehicle
to roll and cause damage or injury.
CAUTION!
If the “Brake Warning Light” remains on with
the parking brake released, a brake system
malfunction is indicated. Have the brake
system serviced by an authorized dealer
immediately.
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 sys-
tem operating.
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
(Continued)
WARNING!(Continued)
result in abnormally high brake tempera-
tures, excessive lining wear, and possible
brake damage. You would not have your full
braking capacity in an emergency.
If either of the two hydraulic systems lose
normal capability, the remaining system will still
function with some loss of overall braking effec-
tiveness. 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.
WARNING!
Driving a vehicle with the “Brake Warning
Light” on is dangerous. A significant de-
crease in braking performance or vehicle
stability during braking may occur. It will take
you longer to stop the vehicle or will make
(Continued)
186

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 selec-
tor in NEUTRAL.
•After pushing the Power Button (4), the seal-
ant (white fluid) will flow from the Sealant
Bottle (1) through the Sealant Hose (6) and
into the tire.
NOTE:
Sealant may leak out through the puncture
in the tire.
If the sealant (white fluid) does not flow
within0–10seconds through the Sealant
Hose (6):
1. Push the Power Button (4) to turn Off the Tire
Service Kit. Disconnect the Sealant Hose (6)from the valve stem. Make sure the valve
stem is free of debris. Reconnect the Seal-
ant Hose (6) to the valve stem. Check that
the Mode Select Knob (5) is in the Sealant
Mode position and not Air Mode. Push the
Power Button (4) to turn On the Tire Service
Kit.
2. Connect the Power Plug (8) 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 (1) may be empty due to
previous use. Call for assistance.
NOTE:
If the Mode Select Knob (5) is on Air Mode
and the pump is operating, air will dispense
from the Air Pump Hose (7) only, not the
Sealant Hose (6).
If the sealant (white fluid) does flow through
the Sealant Hose (6):
1. Continue to operate the pump until sealant is
no longer flowing through hose (typicallytakes 30 - 70 seconds). As the sealant flows
through the Sealant Hose (6), the Pressure
Gauge (3) can read as high as 70 psi (4.8
Bar). The Pressure Gauge (3) will decrease
quickly from approximately 70 psi (4.8 Bar)
to the actual tire pressure when the Sealant
Bottle (1) is empty.
2. The pump will start to inject air into the tire
immediately after the Sealant Bottle (1) is
empty. Continue to operate the pump and
inflate the tire to the pressure indicated on
the tire pressure label on the driver-side
latch pillar (recommended pressure). Check
the tire pressure by looking at the Pressure
Gauge (3).
If the tire does not inflate to at least 26 psi
(1.8 Bar) pressure within 15 minutes:
•The tire is too badly damaged. Do not at-
tempt to drive the vehicle further. Call for
assistance.
238

7
MAINTAINING YOUR VEHICLE
•ENGINE COMPARTMENT — 2.0L . . . . . . . . . . . . .. . . . . .253
•ENGINE COMPARTMENT — 2.4L . . . . . . . . . . . . .. . . . . .254
•ONBOARD DIAGNOSTIC SYSTEM — OBD II . . ..........255
•Onboard Diagnostic System (OBD II) Cybersecurity.......255
•Loose Fuel Filler Cap Message...................256
•REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . .256
•MAINTENANCE PROCEDURES . . . . . . . . . . . . . . ......256
•Engine Oil................................256
•Engine Oil Filter............................258
•Engine Air Cleaner Filter.......................258
•Maintenance-Free Battery.......................258
•Air Conditioner Maintenance.....................259
•Body Lubrication............................261
•Windshield Wiper Blades.......................261
•Adding Washer Fluid.........................261
•Exhaust System............................262
•Cooling System............................263
•Brake System..............................266
•Automatic Transmission (6-Speed) — If Equipped........267
251