OWNER ANSWER
Original ATTO 3 sunroof not opening or closing: first checks
Power the original ATTO 3 on and try the roof’s overhead control, distinguishing it from the separate sunshade buttons. Holding the roof button gives manual movement; a short press uses automatic movement when the roof is initialised. A roof that does not move at all needs a different check from one that moves but will not finish closing.
Original ATTO 3 RHD EN-240801; not ATTO 3 EVO. Controls and equipment must match your car.
- Power the vehicle on and match the sunroof button pair to the overhead-panel diagram on PDF page 77 below. The sunshade has its own separate pair. Safety note: Keep everyone and loose objects clear, do not force a stuck roof, and do not attempt opening below 0°C or with snow or frost on it.
- Press and hold the roof close button to request manual closing, then release to stop. If the roof is already closed, a brief open-button press normally tilts it for ventilation when initialised; further brief presses request about 80% opening and then full opening.
- If the glass moves smoothly but automatic closing is incomplete after the roof loses initialisation, use the handbook’s learning sequence: press close once; if it does not fully close, hold close until movement stops, then release.
- For that incomplete-close case, hold close again for at least seven seconds, continuing until the roof fully closes and a click is heard. The roof and sunshade are initialised separately; use the control for the part affected.
- Check one normal closing operation with the path clear. If there is no movement, resistance, skewing or abnormal noise, stop instead of repeatedly holding the control.
Match the original ATTO 3 roof and sunshade controls in the official diagram, PDF page 77 (BYD UK).
What success looks like
The roof closes completely and, when initialised, responds to the ordinary short-press automatic control. Working sunshade movement does not prove that the glass-roof drive is working.
If that did not work
If neither the roof control nor other normal roof commands produce movement, ask BYD to check the overhead control input, roof power supply and motor. Mention any recent low-voltage battery work and whether the nearby interior lights also stopped, without assuming that work caused the fault. If the roof moves but learning does not complete, ask for its position learning and mechanism to be checked. Keep the car sheltered if the roof cannot close. The handbook does not prescribe disconnecting the battery while the vehicle is on as a roof repair.
Useful next steps
BYD Original ATTO 3 RHD EN-240801; not ATTO 3 EVO handbook, PDF pages 76, 77, 78. Checked 13 November 2026.
Open source (BYD UK)