OWNER ANSWER
SEALION 7 interior lights not coming on with the door
Swipe down from the top of the infotainment screen and enable Auto Interior Lights. That is the SEALION 7 control to check for automatic cabin lighting. Touching an individual lamp controls that lamp and, with automatic lighting enabled, can change its brightness.
SEALION 7, RHD 07.2024 EN_V0; equipment as fitted. Menu wording can change with software.
- Swipe down from the screen’s top status bar to open the shortcuts. Find Auto Interior Lights and enable it.
- Open a door and check the cabin lamps. Touch the affected lamp to compare its local response.
- If a lamp changes brightness instead of switching off while automatic lighting is enabled, that matches the handbook. Disable Auto Interior Lights if you want to compare ordinary manual lamp control.
What success looks like
The lights respond to the automatic setting and the local touch controls. With the car switched off and a door left open, the handbook says the lamps turn off after a period; it does not specify an exact delay.
If that did not work
If the local touch control works but opening a door does not, note whether this affects one door or every door and whether the instrument display recognises that door as open. Ask BYD to check the automatic-light setting and door-open input. If one lamp also fails its local control, ask for that lamp and its supply to be checked. Do not treat the ambient decorative strips as the reading lamps.
Useful next steps
BYD SEALION 7 RHD 07.2024 EN_V0 handbook, PDF pages 81. Checked 13 November 2026.
Open source (BYD UK)