Mazda CX-9 2019 Owner's Manual page 324

When Driving
i-ACTIVSENSE
CAUTION
In the following cases, turn the system off to prevent a mis-operation:
The vehicle is being towed or when towing another vehicle.
The vehicle is on a chassis roller.
When driving on rough roads such as in areas of dense grass or off-road.
Refer to Stopping the Smart City Brake Support (SCBS) system Operation on page 4-165 on
how to turn off the SCBS system.
NOTE
The SCBS system will operate under the following conditions.

The engine is running.

The Smart Brake Support/Smart City Brake Support (SBS/SCBS) system warning

indication (amber) does not illuminate.
(Rear-end collision warning)

The vehicle speed is about 4 to 80 km/h (2 to 50 mph).
(Brake control (Smart City Brake Support (SCBS) brake))

The vehicle speed is about 4 to 30 km/h (2 to 18 mph).
The SCBS system is not turned off.

Under the following conditions, the SCBS system may not operate normally:

The SCBS system will not operate if the driver is deliberately performing driving

operations (accelerator pedal and steering wheel).
If there is the possibility of partial contact with a vehicle ahead.

The vehicle is driven on a slippery road surface such as wet roads or icy or snow-bound

roads.
The braking performance is adversely affected due to cold temperatures or wet brakes.

The vehicle is driven at the same speed as the vehicle ahead.

The accelerator pedal is depressed.

The brake pedal is depressed.

The steering wheel is being operated.

The selector lever is being operated.

In the following cases, the Forward Sensing Camera (FSC) determines that there is a

vehicle ahead and the SCBS may operate.
Objects on the road at the entrance to a curve.

Vehicles passing in the opposite lane while making a curve.

Metal objects, bumps, or protruding objects on the road.

When passing through a toll gate.

When passing through low gates, narrow gates, car washing machines, or tunnels.

4-164