RH 450h 2010 ENGINE OVERHEAT

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04-13-23 | 03:27 AM

MrHoangChu

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2nd gear

Joined: Jun 2021

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From: Viet Nam

RH 450h 2010 ENGINE OVERHEAT

Hello!
Lexus 450h manufactured in March 2009 after maintenance or error: "ENGINE OVERHEAT". Please ask why?
Thanks a lot!

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04-13-23 | 04:18 AM

jer

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Joined: Jan 2007

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From: fl

Was the radiator flushed and not refilled properly? There should be fluid in the overflow, would check there.

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MrHoangChu (06-18-24)

04-14-23 | 12:54 PM

salimshah

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From: Austin, TX

Please write more details. Like what maintenance?

First suspect for cooling issues is coolant [is it full, is there air trapped]. If the coolant was drained during maintenance, did you put the vehicle in service mode to fill up and purge air].
Next is air flow? Is the radiator air flow good?
Is the thermostat working correctly?
Does the radiator fan run after the operating temperature is reached?

Salim
PS: Please search on "coolant"

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