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Hybrid Technology Unique topics related to the 2010 - 2015 RX450H model hybrid drivetrain and other features/options found only on the RX450H. Please use the main forum for discussion about shared components with other third generation RX models.

Auxiliary belt 3.5L engine

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Old 09-06-17, 08:17 PM
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ukrkoz
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Default Auxiliary belt 3.5L engine
I byu mistake asked that question in the first gen hybrid forum
SO I'll ask here.
If everything is electric, what is auxiliary belt for?
Attached Thumbnails Auxiliary belt 3.5L engine-inked3644_li.jpg  
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Old 09-07-17, 06:34 AM
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Droid13
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The water pump is still engine driven.
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Old 09-08-17, 07:35 PM
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That's ONE pulley. It's wrapped around THREE. One being main pulley.
Hmm, could be a tensioner. No telling without removing wheel and tire well cover.
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Old 09-09-17, 07:24 AM
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It is the tensioner. Main pulley, water pump and the tensioner. There is also a slot for 5mm hex key (allen) to hold the tensioner.

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Old 09-09-17, 08:32 PM
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OK. Thank you.
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