Toyota 2013 Prius Owner's Manual page 355

Hill-start assist control
■
→P. 333
PCS (Pre-Collision System) (if equipped)
■
→P. 335
When the TRAC/VSC/ABS systems are operating
PRIUS PHV_OM_OM47787U_(U)
2-4. Using other driving systems
The slip indicator light will flash
while the TRAC/VSC/ABS sys-
tems are operating.
2
329