Toyota RAV4 Owner's Manual page 344

344
4-5. Using the driving support systems
Operating tips

The system will operate when the shift lever is in a position other than P, how-
ever to make effective use of the system it is recommended to select a lower
shift range.
 When the downhill assist control system is operated continuously
This may cause the brake actuator to overheat. In this case, the downhill
assist control system will stop operating, a buzzer will sound and the downhill
assist control system indicator will start flashing, and the "TRC OFF" will be
shown on the multi-information display. Refrain from using the system until
the downhill assist control system indicator stays on and the message goes
off. (The vehicle can be driven normally during this time.)
Sounds and vibrations caused by the downhill assist control system

 A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound does not indicate
that a malfunction has occurred in downhill assist control system.
 Either of the following conditions may occur when the downhill assist control
system is operating. None of these are indicators that a malfunction has
occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
 System malfunction
 The downhill assist control system indicator does not come on when the
engine switch is turned to the "ON" position (vehicles without a smart entry
& start system) or IGNITION ON mode (vehicles with a smart entry & start
system).
 The downhill assist control system indicator does not come on when the
"DAC" switch is pressed.
The slip indicator comes on.

In the above cases, have your vehicle checked by any authorized Toyota
dealer or repairer, or another duly qualified and equipped professional.
RAV4_OM_OM42873E_(EE)