2003 Land Rover Discovery

The 2003 Land Rover Discovery is a mid-size SUV known for its off-road capabilities. It is powered by a 4.6L V8 engine that produces 217 horsepower and 300 lb-ft of torque, paired with a 4-speed automatic transmission.

Engine

4.6L V8

• Valve Cover Gaskets Leak: Symptoms: Oil leaks on the top of the engine, visible on the valve covers. Solution: Replace valve cover gaskets. Estimated Cost to Fix: $500 - $1000+
• Timing Chain Tensioner Failure: Symptoms: Engine rattle or knocking noise. Solution: Replace timing chain and tensioner. Estimated Cost: $1500 - $2500+
• Head Gasket Failure: Symptoms: Coolant leaks, overheating, white smoke from exhaust. Solution: Replace head gaskets. Estimated Cost to Fix: $2500 - $4000+
• Intake Manifold Gasket Failure: Symptoms: Vacuum leak, reduced engine power, rough idle. Solution: Replace intake manifold gasket. Estimated Cost to Fix: $500 - $1500+
• Oxygen Sensor Failure: Symptoms: Check engine light on, reduced fuel economy, rough idle. Solution: Replace oxygen sensor. Estimated Cost: $200 - $400+
• Mass Airflow Sensor Failure: Symptoms: Check engine light on, reduced engine power, rough idle. Solution: Replace mass airflow sensor. Estimated Cost: $200 - $400+
• Catalytic Converter Failure: Symptoms: Check engine light on, reduced engine power, strong exhaust odor. Solution: Replace catalytic converter. Estimated Cost: $1000 - $2000+

Transmission

4-Speed Automatic

• Transmission Slippage: Symptoms: Difficulty shifting, slipping gears, loss of power. Solution: Rebuild or replace transmission. Estimated Cost: $1500 - $3000+
• Torque Converter Failure: Symptoms: Shuddering or vibration during acceleration, loss of power. Solution: Replace torque converter. Estimated Cost: $1000 - $2000+
• Transmission Control Module Failure: Symptoms: No gears engage, check engine light on, transmission fault codes. Solution: Replace transmission control module. Estimated Cost: $500 - $1500+
• Transmission Line Leak: Symptoms: Transmission fluid leaks, low fluid level. Solution: Repair or replace transmission line. Estimated Cost: $200 - $600+

Suspension

• Air Suspension Failure: Symptoms: Suspension sags, uneven ride height, compressor noise. Solution: Replace air suspension components (compressor, struts, bags). Estimated Cost: $1000 - $3000+
• Coil Spring Failure: Symptoms: Sagging suspension, reduced ride height, uneven ride. Solution: Replace coil springs. Estimated Cost: $500 - $1200+
• Shock Absorber Failure: Symptoms: Bouncy or rough ride, poor handling. Solution: Replace shock absorbers. Estimated Cost: $500 - $1500+
• Control Arm Bushing Wear: Symptoms: Loose or clunking steering, uneven tire wear. Solution: Replace control arm bushings. Estimated Cost: $300 - $700+
• Sway Bar Link Failure: Symptoms: Clunking noise while turning or over bumps. Solution: Replace sway bar links. Estimated Cost: $200 - $600+

Electrical

• Battery Drain: Symptoms: Battery dies quickly, electrical system not working properly. Solution: Diagnose and repair electrical system (check battery, alternator, starter, wiring). Estimated Cost: $200 - $1000+
• Alternator Failure: Symptoms: Battery not charging, electrical system not working properly. Solution: Replace alternator. Estimated Cost: $500 - $1200+
• Starter Failure: Symptoms: Engine won’t start, clicking noise when trying to start. Solution: Replace starter. Estimated Cost: $500 - $1500+
• Wiring Harness Issues: Symptoms: Electrical system malfunctions, intermittent problems. Solution: Repair or replace wiring harness. Estimated Cost: $500 - $2000+
• Faulty Sensors: Symptoms: Check engine light on, various electrical system issues. Solution: Replace faulty sensor. Estimated Cost: $100 - $500+

Exterior

• Headlight Switch Failure: Symptoms: Headlights, taillights, or brake lights not working. Solution: Replace headlight switch. Estimated Cost: $200 - $600+
• Door Lock Actuator Failure: Symptoms: Doors won’t lock or unlock electrically. Solution: Replace door lock actuator. Estimated Cost: $200 - $600+
• Sunroof Leak: Symptoms: Water leaks into cabin from sunroof. Solution: Replace sunroof seal or adjust sunroof mechanism. Estimated Cost: $300 - $1000+
• Rear Hatch Lock Failure: Symptoms: Rear hatch won’t lock or unlock electrically. Solution: Replace rear hatch lock actuator. Estimated Cost: $300 - $700+

Interior

• Instrument Cluster Failure: Symptoms: Gauges not working, warning lights not illuminating. Solution: Replace instrument cluster. Estimated Cost: $500 - $1500+
• Climate Control Failure: Symptoms: AC or heater not working properly, temperature not adjustable. Solution: Diagnose and repair climate control system (check refrigerant, compressor, blend doors, wiring). Estimated Cost: $500 - $2000+
• Heated Seat Failure: Symptoms: Heated seats don’t work. Solution: Diagnose and repair heated seat system (check wiring, heating element, switch). Estimated Cost: $200 - $800+
• Electrical Seat Adjustment Failure: Symptoms: Seats won’t adjust electrically. Solution: Diagnose and repair seat adjustment system (check wiring, motors, switches). Estimated Cost: $300 - $1000+
• Navigation System Failure: Symptoms: Navigation system doesn’t work or has errors. Solution: Update or replace navigation system. Estimated Cost: $500 - $2000+

Summary

The 2003 Land Rover Discovery has several common issues, including engine oil leaks, transmission slippage, suspension failures, and electrical system faults. These issues can range in severity and repair cost, with some being relatively minor and inexpensive to fix, while others can be more serious and require costly repairs. Overall, these issues can result in performance problems, reduced reliability, and additional maintenance expenses for owners.