2004 Lexus SC430

Introduction

The 2004 Lexus SC430 is a luxury coupe that offers a stylish and comfortable driving experience. It is powered by a 4.3-liter V8 engine that produces 300 horsepower and 325 lb-ft of torque, paired with a 6-speed automatic transmission. The SC430 is known for its smooth ride, spacious interior, and advanced technology features. However, it is not without its drawbacks, including some common issues reported by owners.

Engine

• 4.3L V8 Engine
  • Intake manifold runner control system failure
    • Description/Symptoms: Malfunctioning intake manifold runner control system can cause rough idling, hesitation, stalling, and decreased engine performance.
    • Solution: Replace the intake manifold runner control system.
    • Estimated Cost to Fix: $500 - $1,000
    • Recalls: NHTSA Campaign Number 11V156000
  • Oil consumption
    • Description/Symptoms: Excessive oil consumption, requiring frequent topping up between oil changes
    • Solution: Piston ring replacement and oil consumption test
    • Estimated Cost to Fix: $2,000 - $5,000+

Transmission

• 6-Speed Automatic Transmission
  • Transmission shudder
    • Description/Symptoms: Vibration or shuddering felt when shifting gears or at certain speeds
    • Solution: Torque converter replacement or transmission fluid flush
    • Estimated Cost to Fix: $500 - $3,000
  • Transmission failure
    • Description/Symptoms: Complete failure of the transmission, preventing the vehicle from moving
    • Solution: Transmission replacement or rebuild
    • Estimated Cost to Fix: $3,000 - $6,000+

Suspension

• Front suspension wear
  • Description/Symptoms: Excessive wear on front suspension components, leading to noise, vibration, and poor handling
  • Solution: Replace worn suspension components (control arms, ball joints, bushings, etc.)
  • Estimated Cost to Fix: $1,000 - $2,500+
• Rear suspension failure
  • Description/Symptoms: Complete failure of a rear suspension component, resulting in a leaning or sagging rear end
  • Solution: Replacement of failed suspension component (shock absorbers, springs, etc.)
  • Estimated Cost to Fix: $500 - $1,500+

Electrical

• Battery drain
  • Description/Symptoms: Rapid battery discharge, leading to difficulty starting the vehicle
  • Solution: Test and replace faulty electrical components or parasitic draw
  • Estimated Cost to Fix: $100 - $500+
• Headlight failure
  • Description/Symptoms: Dim or malfunctioning headlights
  • Solution: Replace burnt-out headlight bulbs
  • Estimated Cost to Fix: $50 - $200+

Exterior

• Sunroof leaks
  • Description/Symptoms: Water leakage into the interior through the sunroof assembly
  • Solution: Replace sunroof seals or adjust sunroof alignment
  • Estimated Cost to Fix: $200 - $500+

Interior

• Instrument panel failure
  • Description/Symptoms: Malfunctioning instrument panel, causing gauges or displays to not work
  • Solution: Repair or replace instrument panel
  • Estimated Cost to Fix: $500 - $1,200+
• Navigation system failure
  • Description/Symptoms: Inability to use or display navigation system features
  • Solution: Update or replace navigation system software
  • Estimated Cost to Fix: $200 - $1,000+

Summary

The 2004 Lexus SC430 is a luxurious and comfortable coupe, but it is not immune to certain common issues. Engine and transmission problems can be the most severe and expensive, while suspension and electrical issues are less costly but still inconvenient. Interior issues, such as instrument panel and navigation system failures, can also affect the overall functionality of the vehicle. Overall, the cost to fix these issues can vary significantly depending on the severity of the problem and the parts required.