Lexus RX400h Common Problems and Solutions
Rear seat rattle
Problem:
Have you noticed a rattling noise coming from the rear seats? This is most noticeable when driving over speed bumps or poorly surfaced roads. The issue arises from poor fitments of the rear seats, which allows the seat to move slightly, creating some play in the seat mechanism.
Solution:
Adjusting and tightening the rear seats should resolve the problem.
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Braking problems
Problem:
There have been several reports of braking problems with the RX400h. This braking system is regenerative, and users are claiming that they sometimes have to press harder on the brake pedal to fully engage the brakes or face issues with the braking system not functioning properly. This is a known issue with most hybrid braking systems.
Solution:
If the vehicle is still under warranty, you can take it to your dealer, who should be able to resolve the issue free of charge. A software upgrade can often fix the problem. If you need to change your RX400h brake pads, you can watch the video below and do it yourself to save a lot of money.
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Leaking inverter
Problem:
Have you noticed that the inverter is leaking on your RX400h? The inverter is a vital part of the hybrid system and is known to leak coolant. If you observe that the liquid levels in the inverter coolant reservoir are decreasing or there is a crusty pink substance around the inverter, these are signs of a leaking inverter.
Solution:
Replacing the inverter can be very costly, but if your vehicle is still under warranty, Lexus should repair it free of charge. Otherwise, the expense is your responsibility. We aim to help you find a replacement inverter at a very affordable price.
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