2010 Lexus RX450h

Here is a comprehensive list of common issues and complaints for the 2010 Lexus RX 450h, categorized by major components. This hybrid SUV features a 3.5L V6 engine paired with an electric motor, delivering a combined 295 horsepower. It’s known for its smooth ride, luxurious interior, and excellent fuel economy, but some owners have reported issues with hybrid system components, interior trim, and certain electronic features. Potential buyers should be aware of these potential problems when considering a 2010 RX 450h.

Electric Motor

• Inverter Failure
  • Description/Symptoms: Hybrid system malfunction light, reduced power, complete failure to start or move. Can be caused by overheating, component failure within the inverter, or electrical shorts.
  • Solution: Replace the hybrid inverter assembly.
  • Estimated Cost to Fix: $4,000 - $6,000+
  • Recalls: None Found
• Hybrid Battery Degradation
  • Description/Symptoms: Reduced fuel economy, decreased acceleration, longer engine run times, “Check Hybrid System” warning light, and eventual failure to start. Gradual loss of capacity over time.
  • Solution: Replacement or reconditioning of the hybrid battery pack.
  • Estimated Cost to Fix: $2,500 - $4,500+
  • Recalls: None Found

Transmission

• CVT Chain Slippage/Failure
  • Description/Symptoms: Delayed acceleration, shuddering or vibrations during acceleration, a “whining” noise from the transmission, and eventual transmission failure.
  • Solution: Replacement of the CVT assembly.
  • Estimated Cost to Fix: $4,500 - $6,500+
  • Recalls: None Found

Suspension

• Air Suspension Compressor Failure (If Equipped)
  • Description/Symptoms: Vehicle sagging on one or more corners, compressor running constantly, “Check Air Suspension” warning light.
  • Solution: Replacement of the air suspension compressor.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found
• Air Suspension Air Spring Leak (If Equipped)
  • Description/Symptoms: Vehicle sagging on one or more corners, hissing sound coming from the suspension.
  • Solution: Replacement of the leaking air spring.
  • Estimated Cost to Fix: $600 - $1200+ per air spring
  • Recalls: None Found

Electrical

• Navigation System Failure
  • Description/Symptoms: Freezing, unresponsive touchscreen, inability to locate vehicle, or complete system failure.
  • Solution: Replacement or repair of the navigation unit.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found
• Power Liftgate Malfunction
  • Description/Symptoms: Liftgate failing to open or close, slow operation, beeping sounds, or getting stuck mid-cycle.
  • Solution: Replacement of the liftgate struts, motor, or control module.
  • Estimated Cost to Fix: $400 - $1,000+
  • Recalls: None Found
• Headlight Bulb Failure
  • Description/Symptoms: Frequent headlight bulb burnout, dim headlights.
  • Solution: Replacement of the headlight bulbs.
  • Estimated Cost to Fix: $50 - $200+ per bulb depending on HID/LED configuration
  • Recalls: None Found

Exterior

• Door Lock Actuator Failure
  • Description/Symptoms: Door failing to lock or unlock electronically, requiring manual operation.
  • Solution: Replacement of the door lock actuator.
  • Estimated Cost to Fix: $250 - $500+ per door.
  • Recalls: None Found

Interior

• Dashboard Cracking
  • Description/Symptoms: Cracks appearing on the dashboard surface, particularly in warmer climates.
  • Solution: Replacement of the dashboard (expensive), or use of a dashboard cover.
  • Estimated Cost to Fix: $1,500 - $3,000+ for replacement, $50 - $150 for a cover.
  • Recalls: None Found

Summary

The 2010 Lexus RX 450h has a good reputation for reliability, but some owners have reported issues with the hybrid system, particularly the inverter and hybrid battery. These repairs can be quite costly. Other common issues include navigation system problems and power liftgate malfunctions. While less frequent, air suspension issues can also be expensive to repair if equipped. Potential buyers should have these areas inspected prior to purchase.