links to:
https://www.hybridautomotives.com.au/lexus-rx450h-hybrid-common-problems-solution/
which has :
QT:{{”
6. 12V Auxiliary Battery Failure
Symptoms:
Vehicle won’t start
Warning lights flash randomly
Door locks or electronics glitch
Causes:
Old or discharged 12V battery
Loose or corroded battery terminals
Fix:
Replace with a high-quality 12V AGM battery
Clean and tighten terminals
Note: Many “hybrid” issues are actually caused by a weak 12V battery. “}}
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