Two things here, one if your Hybrid battery (traction batteries under the rear seat) are dead then your car will not start w/o a jump. Two, it reads in the manual you are NOT
to jump another car with your hybrid. They are really great cars but there is a lot to learn re: their operation. That's one reason there is more than one manual and why they're so thick
. The 12v battery in the cargo compartment cubby is the power source for all the electrical components and computers. In my manual it details a rather exclusive way to jump start your car after opening up your fuse box but also states it can not be used to jump start another car.
It's completely different than a conventional system where you hear the starter turning over the engine. In your (h) the engine just sort of 'starts' through a direct connection inside the combined traction motors and CVT.
The diagram below is of a Prius but the technology works the same.
If either battery is dead, your car won't start. The traction batteries are designed to maintain enough charge to always start the car. They are designed to last the life of the vehicle. The 12v battery does not turn a starter motor.
Originally Posted by IS350atWOT
I thought our hybrids had a second battery like those of regular cars. At least I thought that's what I was hooking to when I had to use the RX to jump my F. So if the hybrid battery is completely dead, the car won't start?