Automatic High Beam Calibration


Automatic high beams are a key part in modern vehicle safety, improving visibility on dark roads while reducing the risk of dazzling other drivers.

Like all advanced driver assistance systems, regular ADAS calibration is essential to ensure your automatic high beams are functioning accurately and reliably.


What are automatic high beams?

Automatic high beams (AHB) are a feature of ADAS that uses cameras and sensors to automatically switch between full beam and dipped headlights depending on driving conditions. When no oncoming traffic or vehicles ahead are detected, the system activates full beam to maximise your visibility. As soon as another vehicle is detected, it dips the headlights to avoid blinding other road users.

It's worth noting that automatic high beams differ from adaptive headlights, which physically adjust the direction of the beam to follow the road ahead.

How automatic high beam systems work

Automatic high beam systems rely on precisely calibrated forward-facing cameras to continuously scan the road ahead for other vehicles and light sources. The system's software analyses this data in real-time, making instant decisions about whether to activate or deactivate full beam accordingly.

Because the system depends on accurate camera readings, even minor misalignments caused by windscreen replacements, minor collisions or general wear can significantly affect performance.

Do you need ADAS calibration for automatic high beam systems?

ADAS calibration is absolutely essential for automatic high beam systems. A miscalibrated system may fail to detect oncoming vehicles in time, leaving other drivers dangerously affected, or it may dip unnecessarily, reducing your own visibility when you need it most.

ADAS calibration ensures that all cameras and sensors are precisely aligned and that they deliver accurate real-time readings.


How do you know when automatic high beam systems need calibrating?

Look for the symbol for automatic high beams, which typically resembles a headlight with lines projecting forward, often accompanied by the letter 'A' to indicate the automatic function.

As with other ADAS systems, the symbol (in most vehicles) changes colour to reflect system status. Amber may indicate a fault or that the system has been temporarily disabled. If a warning light appears, it's advisable to have your system inspected and recalibrated as soon as possible.


Local automatic high beam calibration services

Lancashire ADAS are your local ADAS calibration specialists, with expertise spanning automatic high beam calibration, lane departure warning, emergency braking systems, traffic sign recognition and much more.