diff --git a/toyota_prius_2017_can1.dbc b/toyota_prius_2017_can1.dbc
index 2988020..aecb5ba 100644
--- a/toyota_prius_2017_can1.dbc
+++ b/toyota_prius_2017_can1.dbc
@@ -113,6 +113,7 @@ BO_ 37 STEER_ANGLE_SENSOR: 8 XXX
  SG_ STEER_RATE : 35|12@0- (1,0) [-2000|2000] "deg/s" XXX
 
 BO_ 467 CRUISE_2: 8 XXX
+ SG_ MAIN_ON : 15|1@0+ (1,0) [0|1] "" XXX
  SG_ SET_SPEED : 23|8@0+ (1,0) [0|255] "kph" XXX
 
 BO_ 1042 LKAS_HUD: 8 XXX