The lifespan of the hybrid battery in a 2008 Lexus RX400 is not an easy estimate to make since it really depends on outside factors like the amount of use it gets, the environment it is used in and the care it receives. Lexus warranties the battery for 10 years or 100,000 miles so that should give You an idea of their faith in the part. It was thought that hybrid batteries would need to be replaced at 10 years but many people are going well past that now and have had no problem. The mileage is also not what everyone initially thought, with owners havinG200,000 plus miles on the stock battery. The one thing to make sure of is You are buying a RX400 used, You need to have the battery checked by Lexus just to make sure it is working as it should since the cost to replace it will be around $5,000 for an OEM replacement.
Paul M
October 25, 2021
Well I have a 08 with 305000 miles original battery so I think they did pretty good on the hybrid batteries
JJ
July 24, 2022
What if the battery die? Can you drive it without the hybrid mode?
Juan R
July 16, 2020
Hybrid batteries in your 2008 lexus rx400h may last between 10-15 years or 150,000 miles without failing.
Anca
March 3, 2022
Mine is a 2007 and has about 160k miles with the original battery.
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