BYD Austria published this bulletin on 27 Oct 2025 for a roll-out in Q4 2025. The release carries multimedia version 51.1.4.2507240.1. Everything below is translated from the German PDF; we have not installed this release on a car.
Overview#
New
- BYD Assistant added in additional languages
- Daytime running light switch added on the PAD (head unit)
- Adjustable vehicle prompt tones with three volume levels (default: low)
- Android Auto and Apple CarPlay navigation information shown in the HUD (only vehicles with HUD)
Optimised
- Improved use of seat ventilation
- Optimised system interface (UI) presentation
- Improved automatic headlight on/off logic at night
- Optimised voice prompts for driver-assistance systems
- Charging pre-heating function improved to raise charging efficiency at low temperatures
- More stable network connection with poor reception
- Optimised Blind Spot Detection (BSD) display in the HUD (only vehicles with HUD)
New features#
BYD Assistant in additional languages#
The BYD Assistant voice control now also supports Danish, Dutch, Swedish and Hebrew.
Vehicle lighting#
A daytime running light switch has been added on the PAD (head unit); the DRL can be switched off when the gear selector is in “P”. On the head unit it appears as a ‘Daytime Running Light’ tile on the vehicle-control page.
Automatic headlight control at night has been optimised, depending on vehicle movement and power status.
Optimised voice prompts#
Adjustable volume for vehicle prompt tones with three levels (default: low); users can set the volume to their preference. On the head unit this is ‘Vehicle Prompt Volume’ (Low / Mid / High) under Settings → Vehicle → Notifications.
Driver-assistance prompts adjusted: ACC/ICC/DOW voice announcements are disabled, while the signal tone is retained.
Optimised HUD functions (only vehicles with HUD)#
Navigation information display: navigation information from Android Auto and Apple CarPlay is shown in the HUD (CarPlay supports Apple Maps only).
BSD (Blind Spot Detection) display improved: the symbol colours now match those in the instrument cluster.
Optimisations#
Optimised system UI display#
More harmonious layouts and improved translations.
Optimised charging pre-heating function#
Charging pre-heating optimised; the battery temperature can now be raised to approximately 25 °C.
Optimised seat-ventilation user experience#
Reduced noise from the seat ventilation.
Optimised TBOX performance#
Stable connection even with a weak network (for example in tunnels or underground car parks). Software conflicts that caused restarts have been eliminated. More precise vehicle location.
Route guidance in the vehicle navigation#
Automatic charging-stop route planning. Adjustable SOC thresholds for charging stops and arrival at the destination. The head-unit ‘Charging Preferences’ screen offers an ‘Automatically add charging stations’ toggle plus sliders for the remaining SOC on arrival at the charging station (shown at 20 %) and when leaving it (shown at 80 %).
Further optimisations#
Maintenance interval raised to 30,000 km. Echo problems during CarPlay calls resolved. Fault in the seat welcome function fixed. Improved energy management.
What we have not verified#
- This is a translation of BYD Austria’s bulletin, not a test: we have not installed V3.0.0 on a Sealion 7.
- 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.