OWNER ANSWER
How do I turn on the rear fog light in a BYD SEALION 7?
Turn the end dial on the SEALION 7 light stalk to dipped headlights, then turn the smaller ring on the same stalk to the rear fog symbol. The rear fog indicator on the instrument cluster confirms the light is selected.
- Turn the end dial to the dipped headlight symbol. This is the position BYD shows in the fog-light instructions.
- Turn the smaller ring, just inboard of the end dial, towards the rear fog symbol. Look for the same symbol on the instrument cluster.
- When visibility improves, turn the ring towards the rear fog symbol again and check that the indicator goes out.
What success looks like
The rear fog indicator comes on when you select the light and goes out when you switch it off.
If that did not work
If the indicator stays off, check that the end dial is set to dipped headlights and try the smaller ring again. If the indicator still does not appear, or the light stays dark when checked safely while parked, ask BYD to check the rear fog lamp and its stalk control. Tell them whether the cluster indicator came on.
On the road, use fog lights only when visibility is seriously reduced, generally when you can see no more than 100 metres. Switch them off as soon as visibility improves.
Useful next steps
BYD SEALION 7 RHD handbook, printed pp. 36 and 72, and Highway Code rules 226 and 236. Checked 13 November 2026.
Open source (BYD UK)