2011 Toyota Prius Owners Manual - Page 209

2 -1 . Driving proc e dure s H or n To sound the horn, press on or close to the mark. ITO21P113 2 When driving n After adjusting the steering wheel Mark sure that the steering wheel is securely locked. The horn may not sound if the steering wheel is not securely locked. (→P. 92) 183 PRIUS_U (OM47685U) DVD