Toyota PRIUS Manual page 465

NOTICE
 Water on the floor
Do not wash the vehicle floor with water.
Vehicle systems such as the audio system may be damaged if water comes
into contact with electrical components such as the audio system above or
under the floor of the vehicle. Water may also cause the body to rust.
 Cleaning the inside of the rear window
 Do not use glass cleaner to clean the rear window, as this may cause
damage to the rear window defogger heater wires. Use a cloth dampened
with lukewarm water to gently wipe the window clean. Wipe the window in
strokes running parallel to the heater wires.
 Be careful not to scratch or damage the heater wires.
PRIUS PHV_OM_OM47831E_(EE)
4-1. Maintenance and care
465
4