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Hybrid Technology Unique topics related to the LS600h L model hybrid drivetrain and other features/options found only on the LS600h. Please use the main 4LS forum for discussion about shared components with other fourth generation LS models.

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Old Dec 12, 2018 | 06:51 AM
  #1  
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DFE
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From: MD
Default LS600hL

Can anyone tell me what a “hybrid vehicle control computer, part number 89981-50015” for a 2008 LS600hL does?

I’m having some issues with the vehicle not starting or dies at random and the dealer is suggesting replacing this item.

The vehicle has a new battery and new push button starting assembly.

Thoughts??
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Old Dec 12, 2018 | 07:43 AM
  #2  
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riknchar
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From: Nebraska
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I've never heard of a failure of that item. I suppose it's simply the computer control (the brains) behind the Hybrid propulsion systems. I see it's a $750 part. Ouch! Must not be very prone to failure or someone would have complained about it before on the forum.

Sort of seems like your Lexus dealer is semi-randomly replacing parts to figure out whatever problem you are having with your LS600hL.

Good luck!
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Old Dec 12, 2018 | 08:26 PM
  #3  
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writes123
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Joined: Mar 2013
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From: CA
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new 12v battery? I have had starting issues related to a dead 12v starting battery causing me to be unable to start the car, which I was able to recharge and get back to normal operations.
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