2012 rx450h will not start
CL Community Team
Joined: Apr 2001
Posts: 16,524
Likes: 1,375
From: Austin, TX
Check the 12v battery in the hatch ... next to spare tire.
Other things to check are the courtesy lights and instrument cluster as they may inform you that your 12v battery is dead/weak.
Salim
Other things to check are the courtesy lights and instrument cluster as they may inform you that your 12v battery is dead/weak.
Salim
Last edited by salimshah; Oct 7, 2017 at 12:08 PM.
Lead Lap
Joined: Nov 2013
Posts: 4,264
Likes: 1,208
From: IL
Lexus/Toyota hybrids - the 12v battery doesn't actually crank the gas motor, the 288v battery does.
The 12v just triggers the relay that connects the traction battery to MG1. There are jump points under
the hood for this. You likely can not get to the actual 12v battery under the cargo floor because without
the battery it is tough to pop the hatch.
The 12v just triggers the relay that connects the traction battery to MG1. There are jump points under
the hood for this. You likely can not get to the actual 12v battery under the cargo floor because without
the battery it is tough to pop the hatch.
Last edited by mcomer; Oct 7, 2017 at 01:04 PM.
CL Community Team
Joined: Apr 2001
Posts: 16,524
Likes: 1,375
From: Austin, TX
Lexus/Toyota hybrids - the 12v battery doesn't actually crank the gas motor, the 288v battery does.
The 12v just triggers the relay that connects the traction battery to MG1. There are jump points under
the hood for this. You likely can not get to the actual 12v battery under the cargo floor because without
the battery it is tough to pop the hatch.
The 12v just triggers the relay that connects the traction battery to MG1. There are jump points under
the hood for this. You likely can not get to the actual 12v battery under the cargo floor because without
the battery it is tough to pop the hatch.
That is why I avoided the term "Jump start". Better choice of words would be providing 12v Boost to get the electronics working [READY in the cluster display]
Salim
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