BYD SEALION 7 owner’s manual UK: official download route

Light mist and a noticeable amount of water are different. The SEALION 7 RHD handbook explains that moisture can condense inside ventilated lights after rain, washing or temperature changes; this alone does not establish a fault.

The handbook says light fog can clear during ordinary use with the appropriate lights on. Do not make a test drive if lighting is ineffective or conditions are unsafe. A noticeable amount of water calls for attention from a BYD authorised repairer.

While parked, record which lamp is affected, whether it is mist or visible water, and whether the light works. Ask your repairer for advice before travelling if a light fails or safety is uncertain. Do not open, heat or modify the lamp to dry it. The SEALION 7 handbook also says not to wax the light casings.

If misting prevents a clear view, stop safely and do not continue until visibility is restored. Check climate settings while parked.

The SEALION 7 RHD handbook describes front-windscreen defrost mode directing air towards the front glass. Find the matching control in your own handbook; rear-screen and mirror heating are separate functions.

The handbook describes returning to fresh air after initial cabin heating to reduce fogging. Keep visible air intakes and outlets unobstructed. If ordinary controls cannot keep the glass clear, or the problem keeps returning, ask an authorised BYD repairer to investigate. Do not drive to reproduce the fault or attempt a DIY refrigerant refill.