Toyota Prius 2011 Manual page 255

Reduced effectiveness of EPS
■
The effectiveness of EPS is reduced to prevent the system from overheating
when there is frequent steering input over an extended period of time. The
steering wheel may feel heavy as a result. Should this occur, refrain from
excessive steering input or stop the vehicle and turn the hybrid system off.
The system should return to normal within 10 minutes.
CAUTION
The ABS does not operate effectively when
■
●
The limits of tire gripping performance have been exceeded.
●
The vehicle hydroplanes while driving at high speed on the wet or slick
road.
Stopping distance when the ABS is operating on the wet or slick roads
■
The ABS is not designed to shorten the vehicle's stopping distance. Always
maintain a safe distance from the vehicle in front of you in the following situ-
ations.
●
When driving on dirt, gravel or snow-covered roads
●
When driving with tire chains
●
When driving over bumps in the road
●
When driving over roads with potholes or roads with uneven pavement
TRAC may not operate effectively when
■
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRAC is operating. 
Do not drive the vehicle in conditions where stability and power may be lost.
2-4. Using other driving systems
2
255