OBD port JEEP GRAND CHEROKEE 2021 Owner handbook (in English)

COMMANDVIEW SUNROOF WITH POWER SHADE — IF
EQUIPPED........................ 56
Opening Sunroof.................. 57
Closing Sunroof.................. 57
Opening Power Shade............... 57
Closing Power Shade............... 58
Pinch Protect Feature............... 58
Venting Sunroof — Express........... 58
Sunroof Maintenance............... 58
HOOD.......................... 59To Open The Hood................. 59
To Close The Hood................. 59
LIFTGATE......................... 59Opening....................... 59
Closing........................ 60
Power Liftgate — If Equipped......... 61
INTERNAL EQUIPMENT................. 62Power Outlets.................... 62
ROOF LUGGAGE RACK — IF EQUIPPED......... 64
GETTING TO KNOW YOUR
INSTRUMENT PANEL
INSTRUMENT CLUSTER DISPLAY............ 66Instrument Cluster Display Location And
Controls....................... 66
Oil Change Indicator System — If Equipped . 67
Instrument Cluster Display Selectable Items . 67
Display Menu items................ 67
Diesel Displays — If Equipped......... 68
Diesel Particulate Filter (DPF) Messages — If
Equipped...................... 69
Fuel System Messages — If Equipped..... 70
TRIP COMPUTER..................... 73WARNING LIGHTS AND MESSAGES.......... 73
Red Warning Lights................ 73
Yellow Warning Lights............... 76
Yellow Indicator Lights.............. 80
Green Indicator Lights.............. 82
White Indicator Lights.............. 83
Blue Indicator Lights............... 84
ONBOARD DIAGNOSTIC SYSTEM — OBD II...... 85Onboard Diagnostic System (OBD II)
Cybersecurity.................... 85
SAFETY
SAFETY FEATURES................... 86Anti-Lock Brake System (ABS)......... 86
Electronic Brake Control System........ 87
AUXILIARY DRIVING SYSTEMS............. 97Blind Spot Monitoring (BSM) — If Equipped . 97
Forward Collision Warning (FCW) With
Mitigation..................... 101
Tire Pressure Monitor System (TPMS).... 103
OCCUPANT RESTRAINT SYSTEMS.......... 107Occupant Restraint Systems Features.... 107
Important Safety Precautions......... 107
Seat Belt Systems................ 108
Supplemental Restraint Systems (SRS) . . . 117
Child Restraints — Carrying Children
Safely....................... 127
Transporting Pets................ 140
SAFETY TIPS..................... 140Transporting Passengers............ 140
Exhaust Gas................... 141
Safety Checks You Should Make Inside The
Vehicle...................... 141
Periodic Safety Checks You Should Make
Outside The Vehicle............... 143
STARTING AND OPERATING
STARTING THE ENGINE — GAS............ 145Automatic Transmission............. 145
Normal Starting................. 145
STARTING THE ENGINE — 3.0L DIESEL ENGINE . . 148Automatic Transmission............. 149
Normal Starting................. 149
STOP/START SYSTEM — IF EQUIPPED........ 150Automatic Mode................. 150
Possible Reasons The Engine Does Not
Autostop..................... 151
To Start The Engine While In Autostop Mode . . 151To Manually Turn Off The Stop/Start
System...................... 152
T
o Manually Turn On The Stop/Start System . . 152System Malfunction............... 152
ENGINE BREAK-IN RECOMMENDATIONS....... 1523.6L & 5.7L Engines.............. 152
Diesel Engine................... 153
SRT Engines................... 153
AUTOMATIC TRANSMISSION............. 154Ignition Park Interlock.............. 155
Brake/Transmission Shift Interlock System . 156
Fuel Economy (ECO) Mode........... 156
Eight–Speed Automatic Transmission..... 157
SPORT MODE — IF EQUIPPED............ 159
FOUR WHEEL DRIVE OPERATION........... 159
Quadra-Trac I Operating Instructions/Precautions
— If Equipped.................. 159
Quadra-Trac II Operating Instructions/Precautions
— If Equipped.................. 159
Shift Positions.................. 160
Shifting Procedures............... 161
Quadra-Drive II System — If Equipped.... 163
7

ONBOARD DIAGNOSTIC
SYSTEM — OBD II
Your vehicle is equipped with a sophisticated
Onboard Diagnostic system called OBD II.
This system monitors the performance of the
emissions, engine, and transmission control
systems. When these systems are operating
properly, your vehicle will provide excellent
performance and fuel economy, as well as
engine emissions well within current govern-
ment regulations.
If any of these systems require service, the
OBD II system will turn on the Malfunction
Indicator Light (MIL). It will also store diag-
nostic codes and other information to assist
your service technician in making repairs.
Although your vehicle will usually be drivable
and not need towing, see an authorized
dealer for service as soon as possible.
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”.
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