RX 450h FWD V6-3.5L (2GR-FXE) Hybrid (2010)
Auxiliary Battery, Hybrid Drive: Technical Service Bulletins
Hybrid System - HV and Auxiliary Battery Maintenance
L-SB-0053-09
Rev1
May 6, 2009
Maintenance for HV & Auxiliary Batteries
Service Category
General
Section
Pre-Delivery Service
Market
USA
Applicability
May 27, 2009 Rev1:
TSB REVISION NOTICE
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The auxiliary battery location references have been corrected throughout the document.
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The CAUTION in step 5 "Before Delivery" section has been updated.
Any previous printed versions of this service bulletin should be discarded.
Introduction
The RX 450h is equipped with 2 types of batteries:
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Hybrid Vehicle (HV) battery
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12-volt auxiliary battery
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If the RX 450h is put into storage the state of charge (SOC) of its HV battery and auxiliary battery will gradually decrease. To prevent the auxiliary
battery from becoming discharged during storage proper maintenance is necessary.
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Please perform the following maintenance service for the HV battery and 12-volt auxiliary battery.
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Before disconnecting the auxiliary battery, confirm the shift lever is in the "P" position and apply the parking brake completely. The shift lever
cannot be shifted from the "P" position with the 12-volt auxiliary battery disconnected.
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If the auxiliary battery is disconnected when the back door is closed, the door will lock. To unlock the door; use the security opener on the inside of
the back door. For details, refer to the Owner's Manual.
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If the negative (-) terminal of the auxiliary battery is reconnected, even if the power switch is selected to the "START" mode, the hybrid system may
NOT start. In this case, push the POWER switch to select "START" again to start the hybrid system (the "READY" light is ON). If the hybrid system
still does NOT start (the "READY" light is OFF), refer to the Repair Manual.