Toyota 2013 Avalon Hybrid Owner's Manual page 195

214
4-4. Refueling
Opening the fuel tank cap
1
With the doors unlocked, press
the center of the rear edge of
the fuel filler door.
Push until you hear a click and take
your hand away to slightly open the
fuel filler door. Then open the door
fully by hand.
2
Turn the fuel tank cap slowly to
open.
3
Hang the fuel tank cap on the
back of the fuel filler door.
AVALON_HV_U (OM41451U)