🏷️ Basic Information

Make:

Jaguar

Model:

XJ Series (XJ6, XJ Sport, XJ Executive, XJ12)

Chassis Codes:

X300, X305

Production Years Covered:

1994-2002

Engine Codes Covered:

AJ16 (3.2L, 4.0L), AJ27 (4.0L Supercharged), V12 (6.0L)

Transmission Codes Covered:

GM 4L80-E (4-speed Automatic), ZF 8HP70 (8-speed Automatic - later models), Manual (less common)

👋 Introduction

Segment:

Full-size Luxury Sedan

Brand Identity:

Elegant design, powerful engines, luxurious interiors, refined ride quality.

Key Competitors:

Mercedes-Benz S-Class, BMW 7 Series, Lexus LS, Audi A8.

Model Distinction:

The X300/X305 generation represented a significant modernization of the Jaguar XJ, blending classic styling with improved reliability and modern amenities.

Target Audience:

Discerning drivers appreciating refined British luxury, performance, and understated elegance.

📋 Manual Details

Region Coverage:

Global (primarily North America and Europe)

Language:

English

Manual Type:

Service and Repair Manual

Format:

Digital Download (PDF)

Estimated Page Count:

1000+

Manual Purpose:

Diagnostic, Repair, Maintenance, Overhaul

📖 Manual Coverage

Engine Management:

Detailed diagnostics, component testing, ECU strategies, sensor calibration for AJ16 and V12 engines.

Engine Mechanical:

Complete engine assembly/disassembly, cylinder head overhaul, piston/ring replacement, crankshaft/bearing inspection, timing chain/belt service.

Cooling System:

Radiator, water pump, thermostat, coolant hoses, fan assembly testing and replacement.

Fuel System:

Fuel pump, injectors, fuel rail, pressure regulator diagnostics and replacement; fuel tank service.

Emission Control:

Catalytic converter, O2 sensors, EGR system, secondary air injection system troubleshooting.

Exhaust System:

Exhaust manifold, catalytic converter, mufflers, hangers inspection and replacement.

Transmission Auto:

GM 4L80-E and ZF 8HP70 (later models) diagnostics, fluid changes, internal component repair procedures.

Transmission Manual:

Service procedures for manual gearbox (where applicable), clutch assembly, flywheel replacement.

Clutch:

Clutch master cylinder, slave cylinder, hydraulic lines, clutch disc, pressure plate and release bearing service.

Supercharger:

Centrifugal supercharger (e.g., on XJR models) installation, maintenance, and seal replacement.

Driveshaft Final Drive:

Driveshaft U-joints, center bearing, differential service, axle shaft replacement.

Steering:

Power steering pump, rack and pinion, steering column, tie rods, steering angle sensor diagnostics.

Suspension Front:

Double wishbone, shock absorbers, coil springs, anti-roll bar, bushings, ball joint replacement.

Suspension Rear:

Multi-link suspension, shock absorbers, coil springs, bushings, control arm replacement.

Brakes Front:

Brake calipers, rotors, pads, brake lines, ABS sensor service.

Brakes Rear:

Brake calipers, rotors, pads, brake lines, parking brake mechanism service.

Brake System:

ABS module, hydraulic control unit (HCU), brake fluid flush and bleed procedures.

Climate Control:

AC compressor, condenser, evaporator, blower motor, refrigerant lines, HVAC control module diagnostics.

Electrical System:

Wiring diagrams, fuse box locations, relay functions, starter, alternator, battery system diagnostics.

Body Components:

Door panels, trim pieces, seat removal, dashboard components, headliner service.

Body Repair:

Panel replacement, dent repair, rust mitigation, structural component repair.

Security System:

Alarm system operation, key fob programming, immobilizer system diagnostics.

Routine Maintenance:

Oil and filter changes, air filter replacement, spark plug service, fluid level checks.

Troubleshooting:

Systematic diagnostic procedures for common and uncommon faults, fault code interpretation.

Component Replacement:

Step-by-step instructions for replacing virtually all major and minor components.

Rebuilding Overhauling:

Detailed procedures for engine, transmission, and differential rebuilds.

Electrical Diagnostics:

Wiring diagrams, testing methods for sensors, actuators, and control modules.

Bodywork Procedures:

Panel alignment, welding, sealing, and trim installation.

Depth Of Coverage:

Comprehensive from basic maintenance to full engine/transmission rebuilds and advanced electrical diagnostics.

Diagnostic Capabilities:

Includes information for using Jaguar-specific diagnostic tools (e.g., WDS) where applicable.

Illustrations Diagrams:

Features detailed exploded views, clear diagrams, and step-by-step photographic guidance.

📊 Manual Specifications

Format Type:

PDF

Searchability:

Text-searchable PDF for quick information retrieval.

Printability:

Fully printable, allowing for individual page or full manual printing.

Binding Style Digital:

N/A (Digital Download)

Paper Quality Digital:

N/A (Digital Download)

⚙️ Engine Specifications

Engine 3 2L Aj16:

Inline-6, Naturally Aspirated. Displacement: 3.2 Liters. Power: ~213 hp. Torque: ~280 lb-ft.

Engine 4 0L Aj16:

Inline-6, Naturally Aspirated. Displacement: 4.0 Liters. Power: ~241 hp. Torque: ~300 lb-ft.

Engine 4 0L Aj16 Sc:

Inline-6, Supercharged (XJR models). Displacement: 4.0 Liters. Power: ~322 hp. Torque: ~377 lb-ft.

Engine 6 0L V12:

V12, Naturally Aspirated. Displacement: 6.0 Liters. Power: ~312 hp. Torque: ~386 lb-ft.

Engine 2 9L:

Note: The inclusion of a 2.9L engine is atypical for this generation and may refer to earlier models or a specific market variant not commonly associated with the X300/X305 codes. Verification would be required.

Engine Technology:

AJ16 engines feature a sophisticated J-gate automatic transmission interface and advanced engine management for their time.

Fuel Delivery:

Multi-point Fuel Injection (MPI).

Fuel Type:

Premium Unleaded Gasoline (91 octane or higher recommended).

🔧 Transmission

Standard Transmission:

GM 4L80-E 4-speed Automatic Transmission.

Optional Transmission:

Later models (post-1997, particularly X350 onwards though the manual covers up to 2002 which might include some later X300 variants) may feature ZF 8HP70 8-speed automatic. Manual transmission options were rare and not primary for this generation.

Transmission Features:

J-gate shifter for sequential manual selection of gears (Comfort/Sport modes).

Automatic Transmission Fluid:

GM DEXRON III (or equivalent specification such as Mercon) for 4L80-E. Refer to manual for ZF 8HP70 specific fluid.

📐 Dimensions

Wheelbase:

Approximately 119.1 inches (3025 mm).

Length:

Approximately 197.4 inches (5014 mm).

Width:

Approximately 70.1 inches (1781 mm).

Height:

Approximately 54.4 inches (1382 mm).

Curb Weight:

Varies by model, typically 3700-4300 lbs (1680-1950 kg).

Gross Vehicle Weight Rating:

Refer to vehicle placard, typically around 5000 lbs (2270 kg).

🛡️ Safety Features

Crash Test Ratings:

NCAP ratings from the era may vary; generally considered safe for its class, but advanced driver-assistance systems were minimal.

Active Safety Features:

Anti-lock Braking System (ABS), Traction Control System (TCS - standard on some later models or optional).

Passive Safety Features:

Front airbags, side impact protection, seatbelt pretensioners, reinforced body structure.

💡 Technology Features

Audio System:

Premium sound systems by Alpine or Harman Kardon, often with CD changers. Cassette players were also common.

Navigation:

Optional GPS navigation systems were available, typically with screen-based interfaces.

Driver Assistance Features:

Limited by modern standards. Features included cruise control and parking sensors on some later models.

Connectivity Options:

Basic. Typically involved analog systems for telephone integration if optioned.

🔧 Maintenance

Oil Change Interval:

Typically every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, depending on driving conditions.

Coolant Flush:

Every 2 years or 30,000 miles (48,000 km).

Transmission Fluid Change:

Every 30,000-60,000 miles (48,000-96,000 km) for automatic transmissions.

Engine Oil Specification:

API SG/SH/SJ rated, SAE 5W-30 or 5W-40 (check manual for specific viscosity based on climate).

Coolant Specification:

Ethylene Glycol based coolant, typically a 50/50 mix with distilled water. Jaguar specific coolant may be recommended.

Brake Fluid Specification:

DOT 3 or DOT 4.

Common Problems:

Nikasil cylinder liner issues on early 4.0L AJ16 engines (US market), oil cooler hose leaks, ABS sensor failures, electrical gremlins, Nikasil replacement is a significant repair covered in this manual.

Common Problems V12:

V12 engines require meticulous maintenance; distributor issues, fuel injection system complexity, and cooling system capacity are potential areas of concern.

Oil Filter Example:

e.g., Mann Filter HU 719/7X, Wix 57057 (verify for specific engine variant).

Air Filter Example:

e.g., Mann Filter C34221, Wix WA9275 (verify for specific engine variant).

📚 Vehicle History

Jaguar Legacy:

Jaguar has a long-standing reputation for building luxurious, sporting sedans with a distinct focus on driver engagement and elegant styling.

X300 Development:

The X300 was a significant redesign, built on a new unibody platform, replacing the aging XJ40. It aimed to return to the classic styling cues of earlier XJs while incorporating modern engineering and manufacturing techniques.

X305 Development:

The X305 was the designation for the V12-powered XJ, representing the pinnacle of the XJ range during this period, continuing Jaguar's tradition of V12 engines.

Manufacturing Location:

Coventry, England.

Production Period:

1994-1997 for X300. The X305 (V12) ran concurrently until 1997. Some AJ16 variants continued in the X308 platform which followed.

🏆 Awards & Recognition

Industry Accolades:

The XJ series of this era was consistently praised for its ride comfort, handling balance, and luxurious interior appointments, often winning awards for design and luxury vehicle segments.