2007 Lexus RX400h

Introduction

The 2007 Lexus RX400h is a luxury hybrid SUV that combines a 3.3-liter V6 engine with an electric motor to produce 270 horsepower and 247 lb-ft of torque. It comes standard with a continuously variable transmission (CVT). Known for its fuel efficiency, comfort, and reliability, the RX400h also received some criticism for its lack of handling agility and sluggish acceleration.

Engine

• 3.3L V6

  • Valve Cover Gasket Leak Description/Symptoms: Oil leaking from the top of the engine, visible as dark spots or streaks on the valve covers. Solution: Replace the valve cover gaskets. Estimated Cost to Fix: $500 - $1,000+

  • Water Pump Failure Description/Symptoms: Overheating, coolant leaks, or a squealing noise from the engine. Solution: Replace the water pump. Estimated Cost to Fix: $700 - $1,200+
  • EGR Valve Failure Description/Symptoms: Decreased fuel efficiency, rough idling, or reduced power. Solution: Clean or replace the EGR valve. Estimated Cost to Fix: $200 - $500+

Transmission

• Continuously Variable Transmission (CVT)

  • Belt Wear Description/Symptoms: Transmission slipping, shuddering, or a burning smell. Solution: Replace the CVT belt and pulleys. Estimated Cost to Fix: $3,000 - $5,000+
  • Control Unit Failure Description/Symptoms: Transmission not shifting properly, erratic behavior, or a warning light on the dashboard. Solution: Replace the transmission control unit. Estimated Cost to Fix: $1,000 - $2,000+

Suspension

• Front Lower Control Arm Bushing Failure Description/Symptoms: Clunking noises when turning or going over bumps, uneven tire wear. Solution: Replace the front lower control arm bushings. Estimated Cost to Fix: $400 - $800+
• Rear Shock Absorber Failure Description/Symptoms: Excessive bouncing or swaying, poor handling. Solution: Replace the rear shock absorbers. Estimated Cost to Fix: $600 - $1,200+

Electrical

• Battery Failure Description/Symptoms: Difficulty starting the engine, dimming headlights or interior lights. Solution: Replace the battery. Estimated Cost to Fix: $200 - $400+
• Alternator Failure Description/Symptoms: Dimming headlights or interior lights, electrical system malfunctions. Solution: Replace the alternator. Estimated Cost to Fix: $500 - $1,000+

Exterior

• No Issues Found

Interior

• Navigation System Failure Description/Symptoms: Screen not working or showing an error message. Solution: Update or replace the navigation system software. Estimated Cost to Fix: $500 - $1,500+
• Climate Control Unit Failure Description/Symptoms: Buttons not working properly, incorrect temperature settings. Solution: Replace the climate control unit. Estimated Cost to Fix: $400 - $800+
• Power Window Failure Description/Symptoms: Windows not opening or closing properly. Solution: Replace the window motor or switch. Estimated Cost to Fix: $300 - $600+

Summary

The 2007 Lexus RX400h is generally a reliable vehicle with a few common issues. The most serious problems include CVT belt wear and transmission control unit failure, which can be expensive to repair. Other issues, such as valve cover gasket leaks and battery failure, are less severe and less costly to fix. Overall, the RX400h is a comfortable and efficient SUV that requires some maintenance and potential repairs as it ages.