OWNER ANSWER
SEALION 7 mirrors not folding when you lock the car
Check side-mirror auto fold in Settings → Vehicle → Comfortable Use, then compare it with the mirror-fold button. If one mirror fails with both controls while the other works, that points to an affected mirror or its control path rather than just the auto-fold setting.
SEALION 7, RHD 07.2024 EN_V0; equipment as fitted. Menu wording can change with software.
- With the car stationary, check that both mirror housings have room to move and are not iced up. Safety note: Do not operate or scrape a frozen mirror; use suitable de-icer first. Do not force a resisting powered mirror or drive with an unusable rearward view.
- Open Settings → Vehicle → Comfortable Use and enable side-mirror auto fold.
- Press the mirror-fold button on the driver’s controls once, then again to unfold. Watch whether both mirrors move or only one.
- Close the car and lock it normally. The handbook links automatic folding to arming the anti-theft system, and unfolding to disarming it.
What success looks like
Both mirrors fold with the button and when the car is locked with auto fold enabled. The manual-button comparison helps distinguish a setting or locking issue from a mirror that will not move electrically.
If that did not work
If the button works for both mirrors but automatic folding does not, confirm the car actually locks and note any door-open warning. If the same mirror fails with either method, stop repeated attempts and ask BYD to check that mirror’s folding drive and electrical connection. Tell them which side fails, whether it makes a noise and whether the problem began after ice, an impact or mirror work.
Useful next steps
BYD SEALION 7 RHD 07.2024 EN_V0 handbook, PDF pages 72. Checked 13 November 2026.
Open source (BYD UK)