BYD Dolphin wipers squeak or smear: clean and check them

China-market owner report

In a discussion dated 2025-03-30, the linked China-market report raised this issue: An owner described noisy wiping, a dealer cleaning the glass/blade and plans to replace the blade if needed. This is an individual account, not a confirmed diagnosis or failure-rate finding. The steps below use the export handbook.

Checks to make while safely parked

1. 1Park and switch wiping offKeep hands clear of the arm and turn automatic wiping off. Do not start a blade frozen to the screen or use it to scrape ice away.
2. 2Position the arm for accessEnable Front wiper check under Service → Overhaul, then follow the handbook’s lifting illustration. Keep control of the arm so it cannot spring back onto the glass.
3. 3Clean and inspectUse suitable windscreen cleaning fluid on the glass and clean the rubber gently. Look for splits, hard rubber or uneven wiping edges; avoid wax and abrasive cleaning.
4. 4Lower and test on wet glassSet the blade gently onto the windscreen before restoring normal operation. Test with washer fluid or rain and check both the sound and the cleared viewing area.

Tick steps as you go. Your progress stays in this tab.

Check the result and know when to stop

Replace a damaged blade with the correct specification or arrange service if cleaning does not restore clear wiping. A noisy mechanism, damaged arm or unreliable movement requires inspection. The Chinese owner’s improvement after dealer cleaning is an anecdote, not a guarantee that dirt explains your symptom.

Common questions