Something happened
Why did my car do that?
Understand unexpected braking, steering assistance, changing availability and other behaviour from modern driver-assistance systems.
Start with what you saw or felt. These guides explain common system behaviour and limitations without pretending to diagnose an unseen vehicle.
Start here
Useful guides
Driver guide
What should I do after an unexpected ADAS warning or intervention?
A calm first-response guide for unexpected braking, steering, warnings or sudden loss of driver assistance.
Read the answer →Driver guide
Why did my car brake by itself when nothing was there?
A calm guide to unexpected ADAS braking, common triggers, immediate driver response and when the vehicle needs inspection.
Read the answer →Feature guide
What is automatic emergency braking, and can I rely on it?
What AEB can and cannot do, how drivers should respond to warnings and when unusual braking needs investigation.
Read the answer →Feature guide
Why does lane assist warn me or move the steering wheel?
The differences between lane-departure warning, lane-keeping assistance and lane centring, with guidance for using them safely.
Read the answer →Driver guide
Adaptive cruise control: how to use it safely
How adaptive cruise control manages speed and following gap, where it can struggle and when the driver should take over.
Read the answer →Driver guide
Why does my car say a camera, radar or driver-assistance system is unavailable?
How to understand blocked-camera, radar-unavailable and driver-assistance warning messages without guessing at an unseen vehicle.
Read the answer →