Mazda CX-3 Owner's Manual page 286

When Driving
i-ACTIVSENSE
NOTE
The Smart Brake Support (SBS) system operates when all of the following conditions
are met:
The ignition is switched ON.
The Smart Brake Support (SBS) system is on.
The vehicle speed is about 15 km/h or faster (10 mph or faster).
The relative speed between your vehicle and the vehicle ahead is about 15 km/h or
faster (10 mph or faster).
The Dynamic Stability Control (DSC) is not operating.
The Smart Brake Support (SBS) system may not operate under the following
conditions:
If the vehicle is accelerated rapidly and it comes close to a vehicle ahead.
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.
The direction indicator is being used.
When the vehicle ahead is not equipped with tail lights or the tail lights are turned
off.
When warnings and messages, such as a dirty windscreen, related to the Forward
Sensing Camera (FSC)/laser sensor (front) are being displayed in the centre display.
Although the objects which activate the system are four-wheeled vehicles, the radar
sensor (front) could detect the following objects, determine them to be an obstruction,
and operate the Smart Brake Support (SBS) system.
Objects on the road at the entrance to a curve (including guardrails and snow banks).
A vehicle appears in the opposite lane while cornering or rounding a curve.
When crossing a narrow bridge.
When passing under a low gate or through a tunnel or narrow gate.
When entering an underground parking area.
Metal objects, bumps, or protruding objects on the road.
If you suddenly come close to a vehicle ahead.
When driving in areas where there is high grass or forage.
Two-wheeled vehicles such as motorbikes or bicycles.
Pedestrians or non-metallic objects such as standing trees.
When the system operates, the user is notifi ed by the fl ashing Smart Brake Support
(SBS) indicator light (red) and the active driving display.
The Smart Brake Support (SBS) warning light (amber) turns on when the system has a
malfunction. Refer to Warning/Indicator Lights on page 4-36 .
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