Segment:
Mid-size/Full-size Luxury SUV
Key Competitors:
Toyota 4Runner, Ford Explorer, Chevrolet Trailblazer, Nissan Pathfinder, Land Rover Discovery
Vehicle Strengths:
Off-road capability (available Quadra-Drive II), comfortable ride, spacious interior, strong towing capacity, premium interior options
Powertrain:
Engine mechanical, engine management, fuel system, exhaust system, cooling system, transmission (automatic and manual where applicable), driveline (2WD/4WD systems, differentials, axles, driveshafts)
Chassis:
Suspension (front/rear), steering system, brake system (front/rear disc, ABS, ESP), wheels and tires
Electrical:
Body control modules (BCM), Powertrain Control Module (PCM), instrument cluster, lighting systems, audio systems, climate control systems, safety systems (airbags, seatbelt pretensioners), power windows, locks, mirrors, diagnostic systems (OBD-II)
Body:
Body structure, exterior panels, interior trim, doors, windows, glass, seats, HVAC system, collision repair information
Powertrain Control:
Engine control module (ECM) diagnostics, fuel injection system, ignition system, emissions control systems.
Body And Frame:
Frame construction, body panel alignment, door mechanisms, interior trim removal and installation, glass replacement.
Heating Ventilation Air Conditioning:
HVAC system operation, diagnosis, refrigerant system, climate control modules.
Maintenance:
Scheduled maintenance, oil changes, fluid checks and changes, filter replacements, tire rotation, battery maintenance
Repair:
Component removal and installation, troubleshooting procedures, diagnostic flowcharts, repair specifications and tolerances, major overhauls
Diagnostics:
Diagnostic trouble codes (DTCs), scan tool operation, electrical circuit testing, component testing, system diagnostics
Wiring Diagrams:
Detailed electrical schematics and wiring diagrams for all systems.
Technical Data:
Torque specifications, clearances, measurements, material specifications, fluid capacities.
Troubleshooting:
Systematic troubleshooting guides for common and uncommon drivability issues, electrical faults, and mechanical failures.
Depth:
Comprehensive: Covers everything from basic scheduled maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures and wiring diagrams.
Diagnostic Tools Required:
Includes information on using OBD-II scanners, multimeter, specialized diagnostic tools for specific systems (e.g., transmission diagnostics).
Engine Options:
3.7L V6 (210-241 hp), 4.7L V8 (235-238 hp), 5.7L HEMI V8 (360-365 hp), 6.1L HEMI V8 (SRT8 - 420 hp)
Engine Code Examples:
2.7L V6: EER, 3.7L V6: EXF, 4.7L V8: END, 5.7L V8: EZH, 6.1L V8: ESG
Torque Range:
235 lb-ft to 419 lb-ft (depending on engine)
Fuel Delivery:
Electronic Multi-port Fuel Injection (MPI)
ECU Type:
Chrysler P-series or similar integrated powertrain control module
NHTSA Frontal Crash Rating:
4 stars (driver and passenger)
IIHS Side Crash Rating:
Good (for models equipped with side airbags)
Stability Control:
Electronic Stability Control (ESC) / ESP
Traction Control:
Traction Control System (TCS)
Braking Assist:
Anti-lock Braking System (ABS), Brake Assist (BA)
Airbags:
Front, side-curtain, and optional front-seat side airbags
Seat Belts:
Pretensioners, load limiters
Oil Change Interval:
Every 5,000-7,500 miles or 6-12 months (depending on oil type and driving conditions)
Transmission Fluid Change Interval:
Every 30,000-60,000 miles or as per severe service schedule
Engine Oil Specification:
SAE 5W-20 or 5W-30 (API SN/SM/SL or ILSAC GF-5)
Coolant Specification:
HOAT (Hybrid Organic Additive Technology) Antifreeze/Coolant, Mopar OAT or equivalent
Transmission Fluid Specification:
ATF+4 (for 545RFE), MB 236.10 (for W5A580)
Brake Fluid Specification:
DOT 3 or DOT 4
Common Problems:
Water pump leaks (especially with 3.7L), HVAC blower motor resistor failure, front suspension/steering component wear (ball joints, tie rods), differential seal leaks, electronic throttle control issues, catalytic converter failure on some models.
Common Problems Detail:
Thermostat housing leaks on V8 engines, differential pinion seal leaks, HVAC blend door actuator failure, sometimes minor electrical gremlins related to body control modules.
