Guide Lines are Displayed with Vehicle Center Line [08/2013 - ]: Description
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
The rear television camera assembly can create parking guide lines. Since this function is not necessary on vehicles with the parking assist monitor system, the guide line creation function of the rear television camera assembly is disabled.