2018 Lexus RX450h

The 2018 Lexus RX450h is a hybrid luxury SUV known for its smooth ride, fuel efficiency, and comfortable interior. It’s powered by a 3.5-liter V6 engine paired with electric motors, producing a combined 308 horsepower and 247 lb-ft of torque. This powertrain is exclusively mated to an electronically controlled continuously variable transmission (ECVT). Owners often praise the RX450h for its reliability and luxurious features, but some common complaints include the infotainment system’s usability and the somewhat uninspiring driving dynamics. Some also consider the regenerative braking to feel unnatural. Below is a compilation of issues and complaints reported by owners of the 2018 Lexus RX450h.

Electric Motor

No Issues Found

Transmission (ECVT)

No Issues Found

Suspension

• Air Suspension Failure (If Equipped)
  • Description/Symptoms: The air suspension may fail, causing the vehicle to sag on one or more corners. This can lead to a rough ride and potentially damage other suspension components.
  • Solution: Replacing the failed air suspension components, such as air struts or the air compressor, can fix the issue.
  • Estimated Cost to Fix: $1,000 - $2,500+ per strut, depending on the shop and parts used.
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: The infotainment system, particularly the navigation or multimedia functions, may freeze, become unresponsive, or crash.
  • Solution: Restarting the system can sometimes temporarily fix it. Software updates might be available from the dealership. In severe cases, replacement of the head unit may be necessary.
  • Estimated Cost to Fix: Software update: free to $200, Head unit replacement: $1,000 - $3,000+
  • Recalls: None Found
• Backup Camera Failure
  • Description/Symptoms: The backup camera may fail to display an image, display a distorted image, or intermittently work.
  • Solution: Check the camera wiring and connections. If the camera itself is faulty, it needs to be replaced.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found
• Wireless Charger Malfunction (If Equipped)
  • Description/Symptoms: The wireless phone charger may not charge phones consistently, or at all.
  • Solution: Ensure the phone is compatible and properly aligned. Software updates might improve performance. In some cases, replacement of the charging pad may be required.
  • Estimated Cost to Fix: Software update: free to $200, Charging pad replacement: $200 - $500
  • Recalls: None Found

Exterior

• Automatic Liftgate Issues
  • Description/Symptoms: The automatic liftgate may fail to open or close properly. This can be due to faulty sensors, actuators, or hydraulic struts.
  • Solution: Diagnosis of the specific failed component is needed. Replacing the faulty sensor, actuator, or hydraulic strut is often the fix.
  • Estimated Cost to Fix: $200 - $800+, depending on the part.
  • Recalls: None Found

Interior

• Dashboard Cracking
  • Description/Symptoms: Cracking of the dashboard material, particularly in hot climates.
  • Solution: Replacement of the dashboard, or application of protective coverings.
  • Estimated Cost to Fix: Dashboard replacement: $1,500 - $3,000, Dashboard cover: $50 - $300
  • Recalls: None Found

Summary

The 2018 Lexus RX450h generally exhibits good reliability, but some common issues, primarily involving the infotainment system, air suspension (if equipped), and automatic liftgate, can be costly to repair. While not widespread, issues like dashboard cracking can affect the vehicle’s aesthetics. The severity of these issues ranges from minor inconveniences to significant repair costs, which prospective buyers should be aware of.