OWNER ANSWER
Why do my BYD SEALION 7 headlights stay on briefly after locking?
The SEALION 7 can keep its lights on briefly after you switch off and lock it. BYD lists a default delay of 10 seconds. Check the after-exit setting under Vehicle → Light if you want a different delay.
- While parked, open Vehicle → Light on the centre screen. Check the time for headlights after exit. The before-entry setting controls the separate delay when you unlock.
- Set the after-exit delay to the time you want from the options shown. The handbook describes the delay with the stalk in Auto, position lights or dipped headlights.
- Switch the car off, close the doors and lock it. Watch whether the lights go out after the selected interval. To check the before-entry setting separately, unlock and observe that interval.
What success looks like
The lights go out after the selected interval. The before-entry and after-exit checks show which setting is controlling the lights.
If that did not work
If the lights stay on well beyond the displayed delay, confirm the car was switched off and locked, then repeat the check once. If they still stay on, tell BYD which lights remain on, the stalk position, the selected delay and how long they stayed lit. Ask them to check the lighting timer and whether the car registers that it has been switched off and locked.
Useful next steps
- Read the SEALION 7 lighting-delay section (BYD UK)
- Identify the separate SEALION 7 rear fog light control
- Prepare a persistent lighting fault for BYD
BYD UK SEALION 7 RHD handbook, printed p. 74. Checked 13 November 2026.
Open source (BYD UK)