BYD Dolphin Surf V2.1.0 · BYD Lab

BYD Austria published this bulletin on 21 Jan 2026 for a roll-out in Q1 2026. Everything below is translated from the German PDF; we have not installed this release on a car.

Overview#

New

Speed adjustment in bends added for ACC
Adjustment of the cruise speed with the accelerator pedal added for ACC
New hands-off safety strategy for ICC: after three level 3 hands-off warnings the ICC function is deactivated until the vehicle is restarted
Outside temperature display added in the instrument cluster

Optimised

Optimisation of the climate control strategy (A/C) to improve driving comfort
Optimisation of the display performance of the reversing camera
Optimisation of the Apple CarPlay behaviour to improve the user experience
Radio shortcut icon added on the PAD screen

New features#

Toggle added for speed adjustment in bends for ACC (Adaptive Cruise Control) and ICC (Intelligent Cruise Control)#

Settings path: Settings → ADAS → Safety Assistance → Curve Assist. Off by default; once switched on it stays on.

Core logic: when ACC/ICC is active and the toggle has been switched on, the system reduces the speed in anticipation, based on the curvature of the approaching bend, to support safe and comfortable cornering.

The on-screen description reads: Speed Adjustment on Curve (SAOC) is an ADAS comfort function; when ACC/ICC is activated it can reduce the driving speed automatically on a curve. Note: the driver must concentrate and take over the vehicle when necessary in order to avoid accidents; refer to the manual for details.

Head-unit ADAS settings, Safety Assist tab, showing Alert Mode set to Vibration, LDW sensitivity Moderate, a Curve Assist group with a Speed Adjustment on Curve toggle switched off, and a Collision Avoidance Assist group with Automatic Emergency Braking on and Rear Collision Warning off. — The new Curve Assist group with the Speed Adjustment on Curve toggle, off by default.

Head-unit information dialog titled Speed Adjustment on Curve explaining that SAOC is an ADAS comfort function that automatically reduces speed on a curve while ACC or ICC is active, with a note that the driver must concentrate and take over when necessary, and an OK button. — The explanation the head unit shows for Speed Adjustment on Curve, including the take-over warning.

Toggle added for adjusting the cruise speed with the accelerator pedal (override mode) for ACC / ICC#

Settings path: Settings → ADAS → Driver Assistance. Off by default; once switched on it stays on.

Core logic: the driver can adjust the cruise speed by pressing the accelerator pedal. This allows a quick, button-free speed change and improves the convenience of ACC/ICC in suitable driving situations.

How the new cruise speed is derived: if the set speed and the speed reached are both 80 km/h or below, the new cruise speed is the speed reached — target 60 km/h, accelerate to 75 km/h, release the pedal, new target 75 km/h. If both are above 80 km/h, nothing changes — target 85 km/h, accelerate to 90 km/h, release the pedal, target stays 85 km/h. If the target is below 80 km/h and the speed reached is above 80 km/h, the new cruise speed is capped at 80 km/h — target 60 km/h, accelerate to 85 km/h, release the pedal, new target 80 km/h.

The on-screen description adds: while the accelerator pedal grants full manual control over speed, the system cannot decelerate the vehicle during this override; prolonged accelerator intervention may deactivate the system; always monitor traffic conditions and remain prepared to take control.

Head-unit ADAS settings, Driving Assist tab, with three cards each carrying a toggle switched off: Intelligent Cruise Control, Inside Overtaking Prevention and the new Adjust Cruise Speed by Accelerator, the last illustrated with a car and an 80 km/h badge. — The new Adjust Cruise Speed by Accelerator toggle in the Driving Assist settings.

Head-unit information dialog titled Adjust Cruise Speed by Accelerator, explaining that drivers can temporarily increase cruise speed with the accelerator and that on release the cruise speed is updated to the higher value up to 80 km/h, with a note that the system cannot decelerate during the override, and an OK button. — The dialog states the 80 km/h ceiling and warns that the system cannot brake while the pedal overrides it.

Safety functions added for ICC/ACC: emergency stop, hands-off penalty logic and camera blockage detection#

Emergency stop function added for ICC: if the driver takes their hands off the steering wheel for a longer period, after a level 3 hands-off warning, the system switches on the hazard warning lights and brakes the vehicle in a controlled way within the lane until it comes to a standstill. Previously only ICC was ended; now ICC is ended plus the hazard warning lights come on plus the car brakes to a standstill in the lane.

Hands-off penalty logic added for ICC: after three level 3 hands-off warnings the ICC function is deactivated until the vehicle is restarted.

Camera blockage detection added for ACC/ICC: if the speed stays above 30 km/h for more than 2 minutes and the camera is completely blocked, a warning message and a fault symbol in the instrument cluster appear and ACC/ICC are ended. The functions are available again as soon as the blockage is cleared.

The page also shows the three telltales involved: the hands-off warning, the ICC warning light and the ACC warning light.

Outside temperature display added in the instrument cluster#

Before: not supported. After: the outside temperature is shown in the instrument cluster.

Optimisations#

Optimisation of the A/C control strategy to improve driving comfort#

Before: customers reported the windscreen misting up frequently.

After: the improved A/C behaviour increases cabin comfort, reduces misting in cold conditions and improves the dehumidification performance overall.

Before/after comparison panel: on the left a heavily misted windscreen labelled High Fogging Risk, on the right a clear view of a snowy road labelled Reduced Fogging Risk, both above the same climate control bar set to 21 °C with AUTO A/C, and the bullet points Improved Dehumidification and Reduced Fogging Risk. — BYD's before/after illustration of the reworked A/C strategy in cold, damp conditions.

Optimisation of the reversing camera function#

Before: the reversing camera did not show a radar distance readout while reversing, and if the panoramic view was activated by the P–R–D gear change it was ended as soon as the vehicle speed exceeded 10 km/h.

After: the reversing camera now shows the radar distance readout while reversing, and if the panoramic view is activated by the P–R–D gear change it is only ended once the vehicle speed exceeds 15 km/h.

Before/after comparison of the reversing camera view in a car park: the left BEFORE panel is marked No radar distance, the right AFTER panel shows a 0.7 m radar distance readout, with captions Radar distance not displayed during reversing and Panoramic view exited when vehicle speed > 10 km/h against Radar distance displayed during reversing and Panoramic view exits when vehicle speed > 15 km/h. — The radar distance readout is new, and the panoramic view now stays on until 15 km/h instead of 10 km/h.

What we have not verified#

This is a translation of BYD Austria’s bulletin, not a test: we have not installed V2.1.0 on a Dolphin Surf.
The bulletin was published by BYD’s Austrian importer. The release itself is the European one, but roll-out dates are given for Austria, and a few items are country-specific (radio services, interface languages, legal notes).
Availability of individual features can depend on trim, model year and the head-unit hardware.