OWNER ANSWER
SEAL windscreen washer spray barely reaches the glass
Check the washer-fluid level first, then make one brief stationary test by pulling the wiper stalk towards the steering wheel. If the reservoir has suitable fluid but the spray still barely reaches the glass, compare the two jets and ask BYD to inspect the fluid supply, hose routing and nozzle aim. Wiper sensitivity settings do not increase washer pressure.
Original SEAL covered by the RHD EN-250305 handbook. Use the matching handbook for a 2026 facelift; this answer does not establish its hose layout or nozzle adjustment.
- Park and switch off before opening the bonnet. Keep the wiper arms down, identify the windscreen-washer reservoir from the matching handbook and check its fluid level. Use the linked SEAL bonnet guide if you need help opening it.
- If low, add suitable windscreen washer fluid, following the product’s dilution instructions for the expected temperature. BYD specifies washer fluid with cold-weather freeze protection and says not to use a vinegar-and-water mixture. Close the reservoir cap and bonnet.
- With the windscreen wet and free of ice, switch the car on while remaining parked. Pull the wiper stalk towards the steering wheel briefly, then release it. Fluid should spray while you pull; the handbook says the wipers make two further sweeps after release.
- Compare the two jets: are both weak, is one weak, or is there no spray? Note whether you hear the pump and whether fluid appears beneath the car. Stop after the comparison if delivery is poor; repeated operation will not establish the cause.
Safety note: If the windscreen cannot be kept clear, stay parked and arrange help.
What success looks like
Washer fluid reaches the windscreen and the blades clear it. If topping up restores delivery, check the level during normal use; an unexpectedly rapid fall needs a leak check. If delivery is normal but the glass smears, use the separate blade-care guide below.
If that did not work
With fluid present but weak delivery, ask BYD to inspect the hose route and any pinching, leaks, pump delivery and nozzle aim or blockage. Say whether one or both jets are affected and whether the pump can be heard; those observations help direct the inspection but do not identify a failed part by themselves. In a European SEAL owner report, repositioning a protective hose sleeve and changing nozzle alignment produced a modest improvement. That is an owner-reported result with no confirmed software version or UK applicability, not an official adjustment procedure or a guaranteed fix for your car. Have the routing and aim checked rather than copying an unverified screwdriver or needle adjustment.
Useful next steps
- Open and close the original SEAL bonnet
- If fluid reaches the glass but it still smears: SEAL blade care
- Prepare a washer fault report for BYD
BYD original SEAL RHD EN-250305 handbook: washer operation PDF69, fluid PDF182 and blade care PDF183. Checked 13 November 2026.
Open source (BYD UK)