BYD Shark 6 AEB: How Automatic Emergency Braking Actually Works?

The BYD Shark 6 pairs Forward Collision Warning (FCW) with Automatic Emergency Braking (AEB), using front millimetre-wave radar and a forward camera. FCW warns you with sound, text, and short brake pulses from 16 km/h. If you do not react, AEB brakes the car automatically from 4 km/h up to 150 km/h to avoid or soften an impact. It detects vehicles and pedestrians, but BYD is clear that it is an aid, not a replacement for the driver.

Quick-Stats: Shark 6 AEB at a Glance

Measurement	Detail (from the Shark 6 manual)
Sensors	Front mmWave radar plus multi-purpose camera
FCW speed range	16 to 150 km/h
AEB speed range	4 to 150 km/h
Detects	Vehicles and pedestrians ahead
Warning types	Audio, text, intermittent braking
Driver override	Steer, accelerate, or brake to cancel
Settings path	Touchscreen, ADAS, Safety Assist

FCW vs AEB: Warning vs Autonomous Braking

These are two stages of the same system.

• FCW (the warning): when a collision risk is detected, the system sounds an alert, shows a message on the cluster, and can give short intermittent brake pulses. It also pre-charges the brakes so they respond faster if you do hit the pedal.
• AEB (the braking): if the risk increases and you have not acted, the system applies braking pressure automatically to avoid the crash or reduce the impact.

In short, FCW asks you to brake. AEB brakes for you when you do not.

The Radar and Camera Sensors Used for AEB

The Shark 6 reads the road ahead with two sensor types working together:

• Front millimetre-wave radar measures distance and closing speed to objects ahead.
• Multi-purpose forward camera classifies what those objects are, such as a vehicle or a pedestrian.

Because the system depends on both, a dirty, blocked, or damaged sensor reduces its ability to react. Keep the front bumper radar area and the windscreen camera zone clean.

At What Speed Does AEB Activate? 

The two stages work over different speed bands.

• FCW operates from 16 to 150 km/h.
• AEB operates from 4 to 150 km/h, so it covers low-speed car park nudges as well as highway speeds.

For AEB to be available, several conditions must all be met: the function is switched on, the car is in Drive, the electronic park brake is released, the car is not rolling backwards, all doors and the bonnet and tailgate are closed, the driver seat belt is fastened, and ESC is on. Above 150 km/h the system will not intervene.

AEB for Pedestrians vs Vehicles

The system is designed to detect both vehicles and pedestrians, but pedestrian protection is harder and more limited.

• Pedestrians can be missed if they are partly hidden, blend into the background, or are obscured by certain clothing or materials.
• People who step into the sensor's range very quickly may not be detected in time.
• On winding roads the pedestrian function can also trigger braking that is not needed.

BYD states plainly that the system cannot fully protect pedestrians or avoid serious injury on its own.

How Hard Does AEB Brake?

The manual describes the braking in stages rather than a fixed figure.

• On the warning stage, the system raises the available brake pressure so braking begins sooner when needed.
• On the braking stage, it applies braking pressure automatically to avoid the collision or lessen the impact.

BYD does not publish a specific deceleration or g-force number for the Shark 6, so we will not quote one. What matters in practice is that AEB is a last-resort aid: if the car ahead brakes suddenly, the manual warns a collision may still be unavoidable.

AEB Limitations: Night, Fog, High Speed, Dusty Sites

Performance can drop in conditions that are common on Australian roads and worksites.

• Weather and light: rain, snow, fog, direct sun, glare, or rapidly changing light can delay or stop detection.
• Dust and grime: a sensor covered by mud, dust, or snow may not work until cleaned, which matters on building and mine sites.
• Radar interference: multi-storey car parks and metal road plates can reflect or jam the radar.
• Small or fast targets: motorcycles, bicycles, and small objects may be detected late or not at all.
• Tight geometry: sharp curves, circular ramps, and long tunnels can cause a temporary loss of function that returns after a restart or normal driving.

What Happens After an Impact: Multi-Collision Brake

AEB works before a crash. The Shark 6 also has Multi-Collision Brake (MCB), which works after one.

• If a collision is severe enough to deploy the airbags, MCB applies automatic braking to slow the car.
• ESC and ABS help keep it stable and in its lane, reducing the chance of a second impact.
• The hazard and brake lights come on to warn other traffic.
• Once the car has stopped, the brakes release and the lights go off so it can be moved for rescue.
• You can interrupt MCB at any time by accelerating or braking.

False Activation: Speed Bumps, Tight Turns, Worksites

No system is perfect, and the manual is honest about false triggers.

• Metal plates, well covers, and overhead road signs can be read as obstacles and cause an unnecessary warning or brake.
• Sharp turns and winding roads can confuse target selection.
• Busy worksites with steel plate and clutter are a common trigger for false braking.

Reassuringly, AEB will not fight you: if you are aware of the warning and steer, accelerate, or brake yourself, the system stands down and lets you drive.

Common Mistakes Owners Make

• Treating AEB as autopilot. It is an auxiliary aid, not a substitute for braking.
• Ignoring a dirty bumper or windscreen. A blocked sensor quietly reduces protection.
• Expecting it above 150 km/h. It does not operate there.
• Skipping recalibration after repairs. Bumper, windscreen, or wheel-alignment work needs the radar and camera recalibrated by an authorised provider.
• Assuming pedestrians are always seen. Pedestrian detection has real limits.