BYD Atto 2 DM-i V1.2.0 · BYD Lab

BYD Austria published this bulletin on 2 Jun 2026 for a roll-out in June 2026. Everything below is translated from the German PDF; we have not installed this release on a car.

Overview#

New

New BYD Assistant with AI-supported voice assistance added.
Trailer mode added.

Optimised

Optimised presentation of the user interface and of the system’s text messages.
Optimised text messages when switching on the air conditioning.
Optimised window control on the PAD.
Problems with vehicle location in the cloud service have been fixed.

New features#

BYD Assistant with large language model added#

With the extended AI functions, the BYD Assistant can now handle not only fixed voice commands but also more complex tasks such as intelligent route planning and AI-generated content, with improved speech understanding and voice quality.

Head-unit home screen with a desert-dunes wallpaper; a BYD Assistant pop-up in the top left shows the prompt ‘may say this Next song, Set volume’, a ‘Processing’ status and a generated text answer recommending the Mogao Grottoes in Dunhuang. — The BYD Assistant now answers free-form questions with generated text rather than only executing fixed commands.

Trailer mode added#

Once a tow bar has been fitted, users can enable this option under “Settings > Drive > Driving Control > Trailer mode” (Einstellungen > Antrieb > Fahrsteuerung > Anhängermodus).

This mode is only available on vehicles whose tow bar was fitted by an authorised BYD workshop.

Photo of the head unit showing Settings > Drive > Driving Control: a Towing Mode panel with Trailer Weight (kg) buttons ‘099 Small Load’ and ’100750 Heavy Load’, a warning text about selecting the correct towing weight, an ‘Automatic Indicator Detection’ toggle (off) and a ‘Trailer mode’ toggle (on), next to a rendering of an ATTO 2 towing a caravan. — Trailer mode lives under Driving Control and asks for a trailer weight class (0–99 kg or 100–750 kg) that the car uses to adjust its power and driver-assistance strategy.

Optimisations#

Optimised user interface and system text messages#

Volume control: two sliders, “Media” and “Navigation”, are shown by default and can be adjusted manually.

Volume pop-up: can be expanded to show all audio channels.

Pop-up timing: automatic closing after inactivity set to 4 seconds.

ICC trailer mode: text added for DiLink instrument clusters.

UI icons: icons for the sunroof and boot switches updated.

Smart Driving: optimised greyed-out logic shows the deactivated state immediately.

Front Vehicle Start Alert: new setting added under “Driving Assistance”.

EPB trailer mode: settings in the “Drive – Maintenance” (Fahren – Wartung) menu adjusted.

Head-unit home screen with an autumn-trees wallpaper; the bottom dock shows navigation shortcuts Home and Work, a radio widget playing ‘RDS KATRADIO’, a Bluetooth phone widget reading ‘Not connected’ and a Settings tile. — The redesigned home screen dock with navigation, radio, phone and settings widgets.

Head-unit Settings > Drive > Overhaul page with a dialog titled ‘Electronic Parking Brake (EPB) Trailer Mode’ listing the conditions to switch to trailer mode: 1. In gear P, 2. Brake pedal depressed, 3. Vehicle not being charged, with an OK button. — The EPB trailer-mode dialog in the Drive – Maintenance menu now lists the three conditions (gear P, brake pedal pressed, not charging) before it can be switched on.

Optimised text messages when switching on the air conditioning#

Text prompts – air conditioning.

Before OTA: no text prompt.

After OTA: if the intelligent on/off function is active and the customer switches on the air conditioning, the instrument cluster shows the message: “Please press the brake pedal and start the vehicle before switching on the air conditioning.”

Photo of the head-unit A/C screen with fan, AUTO, recirculation and defrost buttons; a red arrow points to the on-screen message ‘Please depress the brake pedal, and start the vehicle before using A/C’. — After the update the car explains why the A/C does not start when the vehicle is not yet powered on.

Optimised window control on the PAD#

The user interface is clearer and more intuitive, with more precise touch response and improved rendering. Remote-control, voice and one-touch window functions are more stable, with faster response times and better compatibility.

Head-unit window-control screen with ‘Left side’ and ‘Right side’ tabs, a side view of the car with the hint ‘The window area can be adjusted by sliding up and down’, and buttons Close All, Open All and Ventilation. — The redesigned window-control page: swipe on the window to set its opening, or use Close All, Open All and Ventilation.

Also in this release#

Vehicle location in the cloud service fixed#

Problems with vehicle location in the cloud service have been fixed. The bulletin gives no further detail.

What we have not verified#

This is a translation of BYD Austria’s bulletin, not a test: we have not installed V1.2.0 on a Atto 2 DM-i.
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.