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Emission Bladder
Inside the gas tank is a flexible bladder. It contracts and expands to fill the empty void that would
otherwise be filled with vapor as gasoline is consumed. The reduction of vapor emissions helps to
keep Prius extraordinarily clean.
Overfilling should be avoided, since adding gas after the pump automatically stops can create
pressure within the bladder. This could cause gas to be expelled afterward. So just don't top off.
Capacity reduces during the winter since cold temperatures cause the bladder to contract, up to 1.5
gallons (5.7 liters) in extreme conditions (below 0F / -18C degrees). That means you'll have to fill
up sooner. But when temperatures are that dangerously low, you should really fill up at the
halfway point anyway.
Gas Cap & Door
Twist the cap until it clicks. If it is not tightly secured, you may trigger an alert from the emission
sensor. After all, Prius wouldn't be so clean if vapor were allowed to leak out. In the event of an
alert, turn off the Prius and tighten the cap. Normal status should return after you restart.
Tuck the tether holding the cap to the car into the interior. Simply allowing it to be pushed by the
door may cause a tangle making the door hard to open later.
Lubricate the hinge. After extended exposure to dust, sand, and salt, the spring may struggle to
open the door due to the hinge being dry.
Adjust the latch. It’s possible to accidentally bend it. Too much can make the door difficult to
open. You may need to straighten it.
Multi-Display Care
Cleaning
The best way to remove fingerprints from the touch-screen is actually simpler that some owners
realize. You don't need a special solvent or material. Just a plain old soft cotton fabric, like a well
worn t-shirt or handkerchief. That’s it! But if must use a liquid too, try purified drinking water.
Also, make sure to only clean when the Multi-Display is off (or even better, the Prius itself is off).
This will make the fingerprints easy to see and will prevent the "Reset" button from accidentally
being pushed.
Long-Term Storage
Less than 3 Weeks
Nothing is needed, at room temperature. The engine should startup just fine. Be aware that this
duration can be shortened by the age of the auxiliary-battery and the extreme cold.
More than 3 Weeks
If you have SS/SE, press the button underneath the steering-wheel to disable it. The proximity
detector actually only causes a continuous draw from that 12-volt auxiliary battery for the first 10
days of storage, then it automatically disables itself. But it is better to just do it yourself
immediately.
If you have an alarm system, it is best to manually disconnect the 12-volt auxiliary battery
passenger side in the hatch area. With it disconnected, that continuous drain will be eliminated.
(Make note of the radio buttons you have programmed, since you'll need to manually restore them
after reconnecting the 12-volt auxiliary battery.)
Draining the 201.6-volt battery-pack while in long-term storage is never a concern. When you shut
off the Prius, an electric-relay automatically deactivates to cut the connection to the hybrid system.
So it isn’t even connected to the rest of the system until you turn the key again.
Prius User-Guide 17 of 45 Last Updated: 2/07/2006