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mikeavelli
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I just love this thing….
I see there's been some confusion on what exactly differs between Tundra/Sequoia's iForce Max and LX700h version.
This is the diagram for iForce Max on the Tundra/Sequoia I got from toyota-club.net. If the HV battery fails, the 12V can crank the starter and run the engine. The engine can still drive MG1 and keep the 12V system powered through the AC-DC-DC converter. It is already more robust than vast majority of the hybrids on the market (including Toyota's own), which all require a functioning HVB to start at all.
The LX700h adds an alternator so the 12V system can be completely isolated from the HV circuit. The difference is it can not only survive a HVB failure, but also MG1 AND inverter failure. It's very very rare to have all components on the HV circuit fail, since that usually means severe damage to other parts that can completely write off the vehicle. A HVB failure is the worst case scenario for most users. Apparently Lexus thinks it's necessary to have extra peace of mind for its customers. My guess is some "VIP" need it to run after surviving gunfights, which is not an uncommon scenario for LX's most hardcore customers.
This is the diagram for iForce Max on the Tundra/Sequoia I got from toyota-club.net. If the HV battery fails, the 12V can crank the starter and run the engine. The engine can still drive MG1 and keep the 12V system powered through the AC-DC-DC converter. It is already more robust than vast majority of the hybrids on the market (including Toyota's own), which all require a functioning HVB to start at all.
The LX700h adds an alternator so the 12V system can be completely isolated from the HV circuit. The difference is it can not only survive a HVB failure, but also MG1 AND inverter failure. It's very very rare to have all components on the HV circuit fail, since that usually means severe damage to other parts that can completely write off the vehicle. A HVB failure is the worst case scenario for most users. Apparently Lexus thinks it's necessary to have extra peace of mind for its customers. My guess is some "VIP" need it to run after surviving gunfights, which is not an uncommon scenario for LX's most hardcore customers.
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Tragic Bronson
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mikeavelli
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700h is an interior refresh away from being a world beater