Jeep 2008 Grand Cherokee User Manual

a speed of 40 mph (64 km/h). At 40 mph (64 km/h), the
normal ESP stability function returns but TCS remains
off. When the vehicle speed drops below 35 mph (56
km/h), the ESP system shuts off. ESP is deactivated at
low vehicle speeds in 4WD low range so that it will not
interfere with off-road driving but ESP function returns
to provide the stability feature at speeds above 40 mph
(64 km/h). The 9ESP/TCS Indicator Light9 will always be
illuminated in 4WD low range when ESP is off.
NOTE: The “ESP OFF” message will display and the
audible chime will sound when the gear selector is
placed into the “P” (Park) position from any other
position, and then moved out of the “P” (Park) position.
This will occur even if the message was previously
cleared
WARNING!
With the ESP switched off, the enhanced vehicle
stability offered by ESP and ERM are unavailable. In
an emergency evasive maneuver, the ESP and ERM
systems will not engage to assist in maintaining
stability. The “Full Off” mode is intended for off-
road use only.
TSC (Trailer Sway Control)
TSC uses sensors in the vehicle to recognize an exces-
sively swaying trailer and will take the appropriate
actions to attempt to stop the sway. The system may
reduce engine power and apply the brake of the appro-
priate wheel(s) to counteract the sway of the trailer. TSC
will become active automatically once an excessively
swaying trailer is recognized. No driver action is re-
quired. Note that TSC cannot stop all trailers from
146 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Jeep 2008 Grand Cherokee Specifications

General

Brand	Jeep
Model	2008 Grand Cherokee
Category	Automobile
Language	English

Summary

INTRODUCTION

Rollover Warning

Warns about the higher rollover risk of utility vehicles and safe driving practices.

Warnings And Cautions

Details warnings against operating procedures that could cause accidents or injury.

A Word About Your Keys

Explains the keyless ignition system and its components.

Occupant Restraints

Covers the importance and proper use of seat belts and airbags for passenger safety.

THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Sentry Key

Describes the Sentry Key Immobilizer System for preventing unauthorized vehicle operation.

Remote Keyless Entry

UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Hands–Free Communication (UConnect™) — If Equipped

Electronic Brake Control System

Describes ABS, TCS, BAS, ERM, and ESP for enhanced vehicle stability and control.

UNDERSTANDING YOUR INSTRUMENT PANEL

Instrument Cluster

INSTRUMENT CLUSTER DESCRIPTION

STARTING AND OPERATING

Starting Procedure

Outlines essential steps for safely starting the vehicle before driving.

Automatic Transmission

FOUR-WHEEL DRIVE OPERATION

Details operation and precautions for Quadra-Trac I and II systems in various modes.

OFF-ROAD DRIVING TIPS

Tires — General Information

Fuel Requirements

TRAILER TOWING

Provides essential safety tips and information for towing a trailer with the vehicle.

WHAT TO DO IN EMERGENCIES

HAZARD WARNING FLASHERS

IF YOUR ENGINE OVERHEATS

Provides steps to take when the engine overheats to prevent damage.

JACKING AND TIRE CHANGING

Details safety warnings and instructions for using the jack and changing a tire.

JUMP STARTING

Offers crucial safety warnings and step-by-step instructions for jump starting a vehicle.

TOWING A DISABLED VEHICLE

MAINTAINING YOUR VEHICLE

Onboard Diagnostic System — OBD II

Explains the function of the OBD II system and the Malfunction Indicator Light.

Maintenance Procedures

Cooling System

Brake System

Stresses the importance of inspecting brake components and warns against riding the brakes.

MAINTENANCE SCHEDULES

MAINTENANCE SCHEDULE — GASOLINE ENGINES

Required Maintenance Intervals

MAINTENANCE SCHEDULES — DIESEL ENGINE

Schedule "B" — Diesel Engine

Details the maintenance schedule for diesel engines used under severe operating conditions.