Positioning:
The Land Rover Discovery 3 (LR3) was positioned as a premium, highly capable, and versatile SUV, excelling in off-road performance and luxury comfort. This manual caters to owners and technicians seeking detailed factory-level repair information for this segment.
Competitors:
Competed against vehicles like the Toyota Land Cruiser, Lexus GX, BMW X5, Mercedes-Benz M-Class, and Audi Q7 during its production run.
Features:
Body-on-frame construction, advanced Terrain Response system, sophisticated air suspension, powerful V8 engine option, robust off-road capability, premium interior appointments.
Engine Service Repair:
Comprehensive coverage of engine disassembly, assembly, diagnostics, and repair.
Transmission Service Repair:
Detailed procedures for automatic and potentially manual transmission service, repair, and overhaul.
Brake System:
In-depth coverage of brake component diagnosis, repair, bleeding, and system maintenance.
Wiring Diagram:
Includes detailed electrical wiring diagrams for all vehicle systems.
Electrical System:
Extensive coverage of electrical components, diagnostics, and troubleshooting.
Suspension:
Detailed information on air suspension, control arms, bushings, and alignment procedures.
Steering:
Coverage of steering rack, power steering system, and steering column repair.
Cooling System:
Maintenance, repair, and troubleshooting of the engine cooling system, including radiators and thermostats.
Fuel Injection:
Detailed diagnostics and repair procedures for fuel injection systems.
Fuel System:
Coverage of fuel pump, fuel lines, and fuel tank maintenance and repair.
Emission System:
Information on emission control components and troubleshooting.
Heater Air Conditional:
Detailed service and repair procedures for the HVAC system.
Engine Control System:
In-depth diagnostics and repair for the Engine Control Module (ECM) and related sensors/actuators.
Chassis Body:
Repair and maintenance of chassis components and body panels.
Restraint System:
Information on airbags, seatbelts, and related safety systems.
Interior:
Repair and trim details for interior components.
Differential Drive:
Service and repair of front, rear, and center differentials, and drivetrain components.
Axle:
Information on axle shafts, CV joints, and related components.
Body And Frame:
Details on body panel removal/installation, structural components, and chassis repair.
General Maintenance:
Routine maintenance tasks, fluid changes, filter replacements, and inspections.
Troubleshooting:
Systematic diagnostic procedures and troubleshooting guides for common and uncommon faults.
Periodic Lubrication:
Detailed lubrication points, schedules, and fluid specifications.
Circuit Diagrams:
Inclusion of detailed electrical circuit diagrams for troubleshooting.
Equipment Data:
Technical data and specifications for various vehicle equipment.
Engine Overhaul:
Detailed step-by-step instructions for complete engine disassembly, inspection, repair, and reassembly, including torque specifications for all fasteners.
Transmission Rebuild:
Comprehensive guide to the overhaul of the ZF 6HP26 automatic transmission, including component identification, torque settings, and fluid management.
Air Suspension Repair:
Detailed procedures for diagnosing and repairing the air suspension system, including compressor, air springs, lines, and height sensors.
Wheel Alignment:
Specifications and procedures for performing wheel alignment.
Electrical Diagnostics:
In-depth diagnostic trees and procedures for all major electrical systems, utilizing wiring diagrams.
Depth:
Complete Factory Level - Covers everything from basic maintenance to complex repairs and diagnostics, suitable for professional technicians and advanced DIYers.
Diagnostic Tools Required:
Likely requires factory-level diagnostic equipment (e.g., IDS - Integrated Diagnostic Software) for advanced troubleshooting of complex electronic systems, as well as standard hand and power tools.
Example Length:
Approx. 4,834 mm (190.3 in)
Example Width:
Approx. 1,915 mm (75.4 in)
Example Height:
Approx. 1,890 mm (74.4 in) with standard suspension
Curb Weight:
Approx. 2,375 kg - 2,500 kg (5,236 - 5,512 lbs) depending on engine and configuration.
Towing Capacity:
Typically rated at 3,500 kg (7,716 lbs) (check specific market regulations).
Example NHTSA Rating:
Varies by model year and testing jurisdiction. Generally received good ratings for its era.
Active Safety:
ABS, Electronic Brakeforce Distribution (EBD), Emergency Brake Assist (EBA), Dynamic Stability Control (DSC), Traction Control System (TCS), Hill Descent Control (HDC), Roll Stability Control (RSC), Terrain Response.
Passive Safety:
Multiple airbags (front, side, curtain), seatbelt pre-tensioners, reinforced safety cage.
Oil Change Interval:
Typically every 10,000 miles or 12 months, whichever comes first (check specific engine/oil type).
Air Filter Replacement:
Recommended every 30,000 miles or as needed based on operating conditions.
Transmission Fluid Change:
Intervals vary, often around 60,000 miles for automatic transmissions. Critical to use the correct fluid type (e.g., ZF lifeguard fluid).
Engine Oil Petrol V8:
e.g., Castrol SLX Professional 5W-30 or equivalent meeting Ford WSS-M2C185-A or Jaguar STJLR.03.5003
Engine Oil Diesel Tdv6:
e.g., Castrol TXT SOFE 5W-30 or equivalent meeting Ford WSS-M2C913-A/B or STJLR.03.5003
Transmission Fluid Auto:
ZF LifeguardFluid 6 (or equivalent approved fluid)
Coolant:
OAT (Organic Acid Technology) based coolant, e.g., Havoline XLC or similar meeting Jaguar/Land Rover specification STJLR.651.5003
Common Problems:
Air suspension compressor and height sensors, EGR valve issues (diesel), timing chain issues on early V8s, electronic handbrake faults, water ingress into electronics, prop shaft center bearing wear.
