2004 INFINITI Q45

Introduction:

The 2004 INFINITI Q45 is a full-size luxury sedan known for its powerful engine, spacious interior, and advanced technology. It came with two engine and transmission options:

• V8 4.5L Engine: 340 horsepower, 333 lb-ft torque
• 6-speed Automatic Transmission

Engine

V8 4.5L Engine

• VQ35DE Oil Consumption:
  • Description/Symptoms: Excessive oil consumption, leading to low oil levels and engine damage
  • Solution: Repair or replacement of piston rings and valve seals
  • Estimated Cost to Fix: $4,000 - $8,000+
• CEL and Misfires:
  • Description/Symptoms: Check Engine Light (CEL) illumination due to misfires caused by faulty ignition coils or spark plugs
  • Solution: Replacement of ignition coils and/or spark plugs
  • Estimated Cost to Fix: $200 - $500+
• Intake Manifold Gasket Leak:
  • Description/Symptoms: Engine vacuum leak, causing rough idle and decreased performance
  • Solution: Replacement of intake manifold gaskets
  • Estimated Cost to Fix: $300 - $500+

Transmission

6-Speed Automatic Transmission

• No Issues Found

Suspension

• Sway Bar Link Failure:
  • Description/Symptoms: Clunking and rattling noises during suspension travel, decreased handling
  • Solution: Replacement of sway bar links
  • Estimated Cost to Fix: $200 - $300+
• Air Suspension Malfunction:
  • Description/Symptoms: Abnormal ride height, decreased shock absorption, warning lights
  • Solution: Repair or replacement of air suspension components
  • Estimated Cost to Fix: $1,000 - $2,000+

Electrical

• Battery Issues:
  • Description/Symptoms: Premature battery failure, difficulty starting, electrical system malfunctions
  • Solution: Replacement of battery and/or alternator
  • Estimated Cost to Fix: $200 - $500+
• HVAC System Failure:
  • Description/Symptoms: Malfunctioning climate control, weak or inoperative airflow
  • Solution: Diagnosis and repair of HVAC components (e.g., blower motor, actuators)
  • Estimated Cost to Fix: $300 - $1,000+

Exterior

• Headlight Condensation:
  • Description/Symptoms: Moisture buildup inside headlights, impairing visibility
  • Solution: Replacement of headlight lenses with sealed units
  • Estimated Cost to Fix: $500 - $800+
• Sunroof Leaks:
  • Description/Symptoms: Water leaking into the interior from the sunroof
  • Solution: Repair or replacement of sunroof seals
  • Estimated Cost to Fix: $300 - $500+

Interior

• Dashboard Crack:
  • Description/Symptoms: Crack or deformation of the dashboard
  • Solution: Dashboard replacement
  • Estimated Cost to Fix: $1,000 - $2,000+
• Navigation System Malfunction:
  • Description/Symptoms: Inoperable navigation system, frozen screen, error messages
  • Solution: Repair or update of navigation system software/hardware
  • Estimated Cost to Fix: $500 - $1,000+

Summary

The 2004 INFINITI Q45 is a capable and luxurious vehicle, but it is prone to some mechanical issues, particularly with the engine and suspension. The severity and cost of these issues vary, but they can impact the vehicle’s reliability and overall value. Potential buyers should be aware of these issues before purchasing a Q45.