tire size JEEP COMPASS 2021 Owner handbook (in English)

65
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 Colli -
sion Warning (FCW) With Mitigation
System. 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 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 consumption
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. 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
label. 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 Moni -
toring System (TPMS) that illuminates a low
tire pressure telltale when one or more of
your tires is significantly under-inflated.
Accordingly, when the low tire pressure tell -
tale illuminates, 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.
CAUTION!
Do not continue driving with one or more
flat tires as handling may be
compromised. Stop the vehicle, avoiding
sharp braking and steering. If a tire
puncture occurs, repair immediately using
the dedicated tire repair kit and contact an
authorized dealer as soon as possible.
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GETTING TO KNOW YOUR INSTRUMENT PANEL
66
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 flash for approximately one
minute and then remain continuously illumi-
nated. This sequence will continue upon
subsequent vehicle start-ups as long as the
malfunction exists. When the malfunction
indicator is illuminated, the system may not
be able to detect or signal low tire pressure
as intended. TPMS malfunctions may occur
for a variety of reasons, including the instal -
lation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing
one or more tires or wheels on your vehicle to
ensure that the replacement or alternate
tires and wheels allow the TPMS to continue
to function properly.
Towing Hook Breakdown Warning Light — If
Equipped
This light illuminates when there is
a failure with the tow hook. Contact
an authorized dealer for service.
Yellow Indicator Lights
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 drive -
shafts 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 — If
Equipped” in “Starting And Operating” for
further information on four-wheel drive oper -
ation and proper use.
4WD Lock Indicator Light
This light alerts the driver that the
vehicle is in the four-wheel drive
LOCK mode. The front and rear
driveshafts are mechanically locked
together, forcing the front and rear wheels to
rotate at the same speed.
Refer to “Four-Wheel Drive Operation — If
Equipped” in “Starting And Operating” for
further information on four-wheel drive oper -
ation and proper use.
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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75
(Continued)ESC Operating Modes
NOTE:
Depending upon model and mode of opera-
tion, the ESC system may have multiple
operating modes. ESC OFF Button
ESC On
This is the normal operating mode for the
ESC. Whenever the vehicle is started, the
ESC system will be in this mode. This mode
should be used for most driving conditions.
Alternate ESC modes should only be used for
specific reasons as noted in the following
paragraphs.
Partial Off
The “Partial Off” mode is intended for times
when a more spirited driving experience is
desired. This mode may modify TCS and ESC
thresholds for activation, which allows for
more wheel spin than normally allowed. This
mode may be useful if the vehicle becomes
stuck.
WARNING!
Electronic Stability Control (ESC) cannot
prevent the natural laws of physics from
acting on the vehicle, nor can it increase
the traction afforded by prevailing road
conditions. ESC cannot prevent acci -
dents, including those resulting from
excessive speed in turns, driving on very
slippery surfaces, or hydroplaning. ESC
also cannot prevent accidents resulting
from loss of vehicle control due to inap -
propriate driver input for the conditions.
Only a safe, attentive, and skillful driver
can prevent accidents. The capabilities
of an ESC equipped vehicle must never
be exploited in a reckless or dangerous
manner which could jeopardize the
user’s safety or the safety of others.Vehicle modifications, or failure to prop -
erly maintain your vehicle, may change
the handling characteristics of your
vehicle, and may negatively affect the
performance of the ESC system.
Changes to the steering system, suspen -
sion, braking system, tire type and size
or wheel size may adversely affect ESC
performance. Improperly inflated and
unevenly worn tires may also degrade
ESC performance. Any vehicle modifica-
tion or poor vehicle maintenance that
reduces the effectiveness of the ESC
system can increase the risk of loss of
vehicle control, vehicle rollover, personal
injury and death.
WARNING! (Continued)
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87
NOTE:
When filling warm tires, the tire pressure
may need to be increased up to an additional
4 psi (28 kPa) above the recommended cold
placard pressure in order to turn the TPMS
Warning Light off.
The system will automatically update and
the TPMS Warning Light will turn off once
the system receives the updated tire pres-
sures. The vehicle may need to be driven for
up to 10 minutes above 15 mph (24 km/h)
in order for the TPMS to receive this informa -
tion.
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
approximately 24 psi (165 kPa). This tire
pressure is low enough to turn on the “TPMS
Warning Light.” Driving the vehicle may
cause the tire pressure to rise to approxi -
mately 28 psi (193 kPa), but the TPMS
Warning Light will still be on. In this situa -
tion, the TPMS Warning Light will turn off
only after the tires are inflated to the
vehicle’s recommended cold placard pres -
sure value. NOTE:
The TPMS is not intended to replace
normal tire care and maintenance, or to
provide warning of a tire failure or condi
-
tion.
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
responsibility to maintain correct tire pres-
sure using an accurate tire pressure
gauge, even if underinflation has not
reached the level to trigger illumination of
the TPMS Warning Light.
Seasonal temperature changes will affect
tire pressure, and the TPMS will monitor
the actual tire pressure in the tire.
The system only warns the tire pressure is
low: it is not able to inflate them.
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
System (TPMS) sensor to become inop -
erable. 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
from entering the valve stem, which
could damage the TPMS sensor.
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89
exists. If the system fault no longer exists,
the Tire Pressure Monitoring System Warning
Light will no longer flash, and the “SERVICE
TPM SYSTEM” message will no longer
display, and a pressure value will display in
place of the dashes. A system fault can occur
due to any of the following:
Jamming due to electronic devices or
driving next to facilities emitting the same
radio frequencies as the TPMS sensors.
Installing some form of aftermarket
window tinting that affects radio wave
signals.
Lots of snow or ice around the wheels or
wheel housings.
Using tire chains on the vehicle.
Using wheels/tires not equipped with
TPMS sensors.
Vehicles With Compact Spare or Non-Matching
Full Size Spare
1. The compact spare tire or non-matching full size does not have a Tire Pressure
Monitoring sensor. Therefore, the TPMS
will not monitor the pressure in the
compact or non-matching full size spare
tire. 2. If you install the compact or
non-matching full size spare tire in place
of a road tire that has a pressure below
the low-pressure warning limit, upon the
next ignition key cycle, the Tire Pressure
Monitoring System Warning Light will
remain on and a chime will sound. In
addition, the graphic in the instrument
cluster will still display a different color
or highlighted pressure value.
3. After driving the vehicle for up to 10 minutes above 15 mph (24 km/h),
the Tire Pressure Monitoring System
Warning Light will flash on and off for
75 seconds and then remain on solid. In
addition, the instrument cluster will
display a “SERVICE TPM SYSTEM”
message for five seconds and then
display dashes (- -) in place of the pres -
sure value.
4. For each subsequent ignition key cycle, a chime will sound, the Tire Pressure
Monitoring System Warning Light will
flash on and off for 75 seconds and then
remain on solid, and the instrument
cluster will display a “SERVICE TPM
SYSTEM” message for five seconds and
then display dashes (- -) in place of the
pressure value. 5. Once you repair or replace the original
road tire and reinstall it on the vehicle in
place of the compact spare, the TPMS
will update automatically. In addition,
the Tire Pressure Monitoring System
Warning Light will turn off and the
graphic in the instrument cluster will
display a new pressure value instead of
dashes (- -), as long as no tire pressure is
below the low-pressure warning limit in
any of the four active road tires. The
vehicle may need to be driven for up to
10 minutes above 15 mph (24 km/h) in
order for the TPMS to receive this infor -
mation.
TPMS Deactivation — If Equipped
The TPMS can be deactivated if replacing all
four wheel and tire assemblies (road tires)
with wheel and tire assemblies that do not
have TPMS Sensors, such as when installing
winter wheel and tire assemblies on your
vehicle.
To deactivate the TPMS, first replace all four
wheel and tire assemblies (road tires) with
tires not equipped with Tire Pressure Moni -
toring (TPM) sensors. Then, drive the vehicle
for 10 minutes above 15 mph (24 km/h). The TPMS will chime, the Tire Pressure
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STARTING AND OPERATING
146
FOUR-WHEEL DRIVE
OPERATION — IF EQUIPPED
Jeep Active Drive
Your vehicle may be equipped with a Power
Transfer Unit (PTU). This system is auto-
matic with no driver inputs or additional
driving skills required. Under normal driving
conditions, the front wheels provide most of
the traction. If the front wheels begin to lose
traction, power is shifted automatically to
the rear wheels. The greater the front wheel
traction loss, the greater the power transfer
to the rear wheels.
Additionally, on dry pavement under heavy
throttle input (where one may have no wheel
spin), torque will be sent to the rear in a
preemptive effort to improve vehicle launch
and performance characteristics.
Four Wheel Drive (4x4)
The four wheel drive (4WD) is fully automatic
in normal driving mode.
NOTE:
It is not possible to carry out the change of
mode when the vehicle exceeds the speed of
75 mph (120 km/h).
Enabling Four Wheel Drive (4x4)
The buttons for the activation of four wheel
drive are located on the device Selec-Terrain
and allow you to select the following:
4WD LOCK
4WD LOW — (Trailhawk models only)
Active Drive Control — If Equipped
Selec-Terrain Switch The Power Transfer Unit (PTU) is locked to
ensure immediate availability of torque to
the rear drive axles. This feature is selectable
in AUTO mode and automatic in the other
driving mode. 4WD LOCK can be enabled by
the following ways:
When the 4WD LOCK button is pushed.
When the Selec-Terrain switch is rotated
from AUTO to any other off-road modes.
Active Drive With Low Control — (Trailhawk
models only)
Selec-Terrain Switch (Trailhawk)
CAUTION!
All wheels must have the same size and
type tires. Unequal tire sizes must not be
used. Unequal tire size may cause failure
of the power transfer unit.
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161
During the maneuver, the system asks to
shift to REVERSE, select the direction indi-
cator in the direction you want to exit. Let go
of the steering wheel and press the dedi -
cated pedals, while the system handles the
steering automatically for exiting the parking
space. If the driver continues to carry out a
voluntary or involuntary action on the
steering wheel during the exit maneuver
(touching or holding the steering wheel to
prevent its movement), the maneuver will be
interrupted.
End Of Maneuver
The semi-automatic maneuver ends when
the display shows the message of a
completed maneuver. At the end of the
maneuver, the system gives back the vehicle
control to the driver.
Important Information
If the sensors undergo impact which alters
their position, the system operation could
be greatly affected.
The sensors reach top performance after
the vehicle has gone about 30 miles
(50 km) due to the dynamic tire circum -
ference calculations used for parking.
Clean the ParkSense sensors regularly,
taking care not to scratch or damage them.
The sensors must not be covered with ice,
snow, slush, mud, dirt or debris. Failure to
do so can result in the system not working
properly. The ParkSense system might not
detect an obstacle behind or in front of the
fascia/bumper, or it could provide a false
indication that an obstacle is behind or in
front of the fascia/bumper.
Construction equipment, large trucks, and
other vibrations could affect the perfor -
mance of ParkSense.
Sensors may detect a nonexistent obstacle
(echo noise) due to mechanical noises, for
example while washing the vehicle or in
the case of rain, strong wind, and hail.
The sensors may not detect objects of a
particular shape or made from particular
materials (very thin poles, trailer beams,
panels, nets, bushes, anti-parking posts,
pavements, rubbish bins, motor vehicles,
etc.). Always take great care to check that
the vehicle and its path are actually
compatible with the parking place identi -
fied by the system.
The use of wheels and tires that are
different size to the original equipment
could affect the operation of the system.
The operation of the rear sensors is auto-
matically deactivated when the trailer's
electric plug is inserted in the vehicle's
tow hook socket, while the front sensors
stay active and can provide acoustic and
visual warnings. The rear sensors are auto-
matically reactivated when the trailer's
cable plug is removed.
In "Search in progress" mode, the system
could incorrectly identify a parking place
to carry out the maneuver (e.g. by a junc-
tion, driveways, roads crossing the direc-
tion of travel, etc.).
In the case of parking maneuvers on roads
on a slope, the performance of the system
could be inferior and it may deactivate.
If a parking maneuver is being carried out
between two parked vehicles alongside the
pavement, the system may cause the
vehicle to mount the pavement.
Some maneuvers at very tight bends might
be impossible to be carried out.
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233
Tire Inflation Pressures
The proper cold tire inflation pressure is
listed on the left side B-Pillar or rear edge of
the passenger door.Tire And Loading Information Placard
This placard tells you important information
about the:
1. Number of people that can be carried in the vehicle.
2. Tire size designed for your vehicle.
3. Cold tire inflation pressures for the front, rear, and spare tires.
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 deter -mining proper inflation. Tires may look
properly inflated even when they are
underinflated.
Inspect tires for signs of tire wear or visible
damage.
Inflation pressures specified on the placard
are always “cold tire inflation pressure”.
Cold tire inflation pressure is defined as the
tire pressure after the vehicle has not been
driven for at least three hours, or driven less
than 1 mile (1.6 km) after sitting for a
minimum of three hours. The cold tire infla -
tion pressure must not exceed the maximum
inflation pressure molded into the tire side -
wall.
Check tire pressures more often if subject to
a wide range of outdoor temperatures, as tire
pressures vary with temperature changes. Tire pressures change by approximately 1 psi
(7 kPa) per 12°F (7°C) of air temperature
change. Keep this in mind when checking
tire pressure inside a garage, especially in
the Winter.
Example: If garage temperature = 68°F
(20°C) and the outside temperature = 32°F
(0°C) then the cold tire inflation pressure
should be increased by 3 psi (21 kPa), which
equals 1 psi (7 kPa) for every 12°F (7°C) for
this outside temperature condition.
Tire pressure may increase from 2 to 6 psi
(13 to 40 kPa) during operation. DO NOT
reduce this normal pressure build up or your
tire pressure will be too low.
Tire Pressures For High Speed Operation
The manufacturer advocates driving at safe
speeds and within posted speed limits.
Where speed limits or conditions are such
that the vehicle can be driven at high speeds,
maintaining correct tire inflation pressure is
very important. Increased tire pressure and
reduced vehicle loading may be required for
high speed vehicle operation. Refer to an
authorized tire dealer or original equipment
vehicle dealer for recommended safe oper
-
ating speeds, loading and cold tire inflation
pressures.
CAUTION!
After inspecting or adjusting the tire
pressure, always reinstall the valve stem
cap. This will prevent moisture and dirt
from entering the valve stem, which could
damage the valve stem.
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SERVICING AND MAINTENANCE
234
Loading
The vehicle maximum load on the tire must
not exceed the load carrying capacity of the
tire on your vehicle. You will not exceed the
tire's load carrying capacity if you adhere to
the loading conditions, tire size, and cold tire
inflation pressures specified on the Tire
Information placard.
NOTE:
Under a maximum loaded vehicle condition,
gross axle weight ratings (GAWRs) for the
front and rear axles must not be exceeded.
Radial Ply Tires
Tire Repair
If your tire becomes damaged, it may be
repaired if it meets the following criteria:
The tire has not been driven on when flat.
The damage is only on the tread section of
your tire (sidewall damage is not repair-
able).
The puncture is no greater than a ¼ of an
inch (6 mm). Consult an authorized tire dealer for tire
repairs and additional information.
Damaged Run Flat tires, or Run Flat tires
that have experienced a loss of pressure
should be replaced immediately with another
Run Flat tire of identical size and service
description (Load Index and Speed Symbol).
Replace the tire pressure sensor as well as it
is not designed to be reused.
Run Flat Tires — If Equipped

Run Flat tires allow you the capability to drive
50 miles (80 km) at 50 mph (80 km/h) after
a rapid loss of inflation pressure. This rapid
loss of inflation is referred to as the Run Flat
mode. A Run Flat mode occurs when the tire
inflation pressure is of/or below 14 psi (96
kPa). Once a Run Flat tire reaches the run flat
mode it has limited driving capabilities and
needs to be replaced immediately. A Run Flat
tire is not repairable. When a run flat tire is
changed after driving with underinflated tire
condition, please replace the TPM sensor as it
is not designed to be reused when driven
under run flat mode (14 psi (96 kPa)) condi -
tion.

NOTE:
TPM Sensor must be replaced after driving
the vehicle on a flat tire condition.
WARNING!
High speed driving with your vehicle under
maximum load is dangerous. The added
strain on your tires could cause them to
fail. You could have a serious collision. Do
not drive a vehicle loaded to the maximum
capacity at continuous speeds above
75 mph (120 km/h).
WARNING!
Overloading of your tires is dangerous.
Overloading can cause tire failure, affect
vehicle handling, and increase your
stopping distance. Use tires of the
recommended load capacity for your
vehicle. Never overload them.
WARNING!
Combining radial ply tires with other types
of tires on your vehicle will cause your
vehicle to handle poorly. The instability
could cause a collision. Always use radial
ply tires in sets of four. Never combine
them with other types of tires.
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SERVICING AND MAINTENANCE
236
(Continued)
NOTE:
Wheel Valve Stem must be replaced as well
when installing new tires due to wear and
tear in existing tires.
Keep dismounted tires in a cool, dry place
with as little exposure to light as possible.
Protect tires from contact with oil, grease,
and gasoline.
Replacement Tires
The tires on your new vehicle provide a
balance of many characteristics. They should
be inspected regularly for wear and correct
cold tire inflation pressures. The manufac-
turer strongly recommends that you use tires
equivalent to the originals in size, quality
and performance when replacement is
needed. Refer to the paragraph on “Tread
Wear Indicators” in this section. Refer to the
Tire and Loading Information placard or the
Vehicle Certification Label for the size desig -
nation of your tire. The Load Index and
Speed Symbol for your tire will be found on
the original equipment tire sidewall.
It is recommended to replace the two front
tires or two rear tires as a pair. Replacing just
one tire can seriously affect your vehicle’s
handling. If you ever replace a wheel, make
sure that the wheel’s specifications match
those of the original wheels. It is recommended you contact an authorized
tire dealer or original equipment dealer with
any questions you may have on tire specifica
-
tions or capability. Failure to use equivalent
replacement tires may adversely affect the
safety, handling, and ride of your vehicle.
Tire Types
All Season Tires — If Equipped
All Season tires provide traction for all
seasons (Spring, Summer, Fall, and Winter).
Traction levels may vary between different all
season tires. All season tires can be identi -
fied by the M+S, M&S, M/S or MS designa -
tion on the tire sidewall. Use all season tires
only in sets of four; failure to do so may
adversely affect the safety and handling of
your vehicle.
WARNING!
Do not use a tire, wheel size, load rating,
or speed rating other than that specified
for your vehicle. Some combinations of
unapproved tires and wheels may change
suspension dimensions and performance
characteristics, resulting in changes to
steering, handling, and braking of your
vehicle. This can cause unpredictable
handling and stress to steering and
suspension components. You could lose
control and have a collision resulting in
serious injury or death. Use only the tire
and wheel sizes with load ratings
approved for your vehicle.
Never use a tire with a smaller load index
or capacity, other than what was origi -
nally equipped on your vehicle. Using a
tire with a smaller load index could result
in tire overloading and failure. You could
lose control and have a collision.
Failure to equip your vehicle with tires
having adequate speed capability can
result in sudden tire failure and loss of
vehicle control.
CAUTION!
Replacing original tires with tires of a
different size may result in false
speedometer and odometer readings.
WARNING! (Continued)
2020_JEEP_M6_UG_UK.book Page 236