Positioning:
The 2003 Jaguar XJ (X350) represented Jaguar's return to a more classic design ethos, blending modern technology with traditional luxury and performance.
Competitors:
Competed with luxury sedans such as the Mercedes-Benz S-Class, BMW 7 Series, Audi A8, and Lexus LS.
Aluminum Construction:
Notable for its all-aluminum monocoque chassis, contributing to reduced weight and improved rigidity.
Air Suspension:
Featured a sophisticated adaptive air suspension system for enhanced ride comfort and dynamic handling.
Engine Diagnostics:
Detailed troubleshooting, repair procedures, and specifications for all engine variants.
Powertrain Repair:
Comprehensive coverage of transmission, driveshaft, differential, and axle repairs.
Suspension Steering:
In-depth procedures for air suspension, conventional suspension, steering system components, and alignment.
Braking System:
Detailed information on ABS, brake calipers, rotors, lines, and fluid service.
Electrical System:
Extensive coverage including wiring diagrams, component testing, diagnosis, and repair of all electrical systems.
Body Chassis:
Procedures for body panel repairs, interior trim, door mechanisms, glass replacement, and chassis components.
Climate Control:
Diagnosis and repair of HVAC system, including refrigerant handling and component replacement.
Fuel System:
Coverage of fuel pump, injectors, lines, and evaporative emissions control systems.
Exhaust System:
Information on exhaust components, catalytic converters, and mufflers.
Cooling System:
Detailed procedures for radiator, thermostat, water pump, and cooling fan service.
Wheel Tire:
Specifications for wheel torque, tire pressure, and wheel bearing service.
Routine Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, and belt inspections.
Major Repairs:
Engine overhaul, transmission rebuilds, suspension component replacement, and brake system overhauls.
Troubleshooting:
Systematic diagnostic procedures for identifying and resolving common and complex issues.
Electrical Diagnostics:
Detailed fault finding for wiring harnesses, sensors, actuators, and control modules.
Component Replacement:
Step-by-step guides for replacing individual parts and assemblies.
Recalibration Procedures:
Information on resetting or recalibrating various vehicle modules after component replacement.
Depth:
Complete factory-level detail, suitable for both novice DIYers and experienced professional mechanics.
Illustrations:
Hundreds of high-quality photos, drawings, and diagrams to aid in comprehension.
Instruction Style:
Numbered steps, detailed substeps, notes, cautions, and warnings for clarity and safety.
Engine Options:
Offered with a range of V8 engines, including naturally aspirated and supercharged variants.
Engine Code Example:
AJ-V8 GEN III (e.g., 3.5L, 4.2L)
Horsepower Range:
Approx. 250 hp to 400 hp depending on engine and supercharger configuration.
Torque Range:
Approx. 280 lb-ft to 413 lb-ft depending on engine and supercharger configuration.
Fuel Injection:
Electronic Multi-Point Fuel Injection (MPI) / Sequential Electronic Fuel Injection (SEFI).
ECU Type:
Jaguar's proprietary Engine Control Unit (ECU) with diagnostic capabilities.
Wheelbase:
Approx. 118.5 inches (3010 mm)
Length:
Approx. 200.5 inches (5093 mm)
Curb Weight:
Approx. 3600 - 4100 lbs (1630 - 1860 kg), depending on engine and specifications.
Gross Vehicle Weight Rating:
Varies by model, typically around 5000 lbs (2270 kg).
NHTSA Crash Test:
Refer to specific NHTSA reports for 2003 models; typically performed well for its class, though detailed data for this year may be limited.
Stability Control:
Traction Control System (TCS) and Dynamic Stability Control (DSC) were standard or available.
Braking Assistance:
Anti-lock Braking System (ABS) and Electronic Brake-force Distribution (EBD).
Airbags:
Front, side, and curtain airbags for driver and passengers.
Seatbelts:
Pretensioning front seatbelts with load limiters.
Navigation System:
Optional touchscreen navigation system with DVD-based maps.
Audio System:
Premium audio systems available, often from brands like Alpine or Harman Kardon, with CD player and optional changer.
Parking Sensors:
Front and rear parking assist sensors available.
Telematics:
Limited by modern standards, but potentially included features like Jaguar's telematics system for emergency services (availability varied by region).
Oil Change Interval:
Typically 10,000 miles or 1 year, whichever comes first (consult manual for exact specification).
Air Filter Replacement:
Recommended every 30,000-60,000 miles, or as needed based on driving conditions.
Spark Plug Replacement:
Platinum or Iridium plugs; typically replaced every 60,000-100,000 miles.
Engine Oil Type:
Synthetic 5W-30 or 0W-30 meeting Jaguar WSS-M2C134-D specification (verify with manual).
Coolant Type:
OAT (Organic Acid Technology) type coolant, typically Jaguar Premium Coolant (refer to manual for specific type and color).
Brake Fluid Type:
DOT 4 Low Viscosity (LV) brake fluid.
Air Suspension Leaks:
Air springs and compressor can be prone to leaks over time, leading to ride height issues.
Aluminum Corrosion:
Corrosion can occur in the aluminum body panels, especially around seams and joints, requiring careful inspection and repair.
Timing Chain Tensioners:
Early models of the AJ-V8 engine (though less common in the 2003 XJ) had issues with plastic timing chain tensioners; later models were improved.
Water Pump Seals:
Water pump seal leaks are a potential concern that requires prompt attention.
Brand Legacy:
Jaguar has a long-standing reputation for producing luxurious, powerful, and stylish grand tourers and saloons.
X350 Introduction:
The X350 generation debuted in late 2002 for the 2003 model year, representing a significant redesign from the outgoing X308 XJ.
Design Philosophy:
Emphasized a return to classic Jaguar proportions and styling cues, while incorporating modern advancements like the aluminum chassis.
Manufacturing Location:
Castle Bromwich, Birmingham, United Kingdom.