BYD Dolphin — Common Problems by Pattern
No Australian recalls on the Dolphin — our tracker and independent recall archives agree. The owner-reported story is instead about grip and software: the factory tyres give up early in the wet, the driver-assist systems chime too much, and the screen occasionally locks up until you learn the ten-second reset. All manageable. Here’s each pattern with its fix.
1. Wet-road traction loss and axle tramp — the tyre problem wearing a traction-control mask
Accelerate on a wet road in a Dolphin Dynamic on 16-inch wheels and the front end can scrabble, bounce (“axle tramp”), and have its torque cut by traction control. Reported on the Premium’s 17s too, but less. Three causes stack up: factory-fitted ChaoYang low-rolling-resistance tyres that trade wet grip for efficiency, instant electric torque, and soft front damping that unloads the front axle under acceleration. The fix is the tyre, not the car: owners who switch to a mainstream touring tyre (Michelin Primacy, Continental UltraContact class) report the problem largely disappears. Until then, Snow Mode softens torque delivery in the wet. Budget for tyres at the first sign — it’s the single biggest running-cost upgrade this car has.
2. Over-sensitive ADAS: lane keep and traffic-sign recognition
Loud beeping, a wheel that tugs, and a speed-sign reader that picks up school-zone and service-road signs it shouldn’t — calibration not developed for Australian signage. OTA updates (V2.0.0 onward) cut the noise substantially. For the steering tug, set Lane Keep to Alert Only, and build the swipe-down shortcut so it’s two taps after every start.
3. Touchscreen, audio and app failures — learn the reset first
The 12.8-inch screen can freeze on the BYD logo, drop all audio (indicator clicks included), or crash in wired CarPlay; the smartphone app can stop talking to the car entirely. Behind it: a Telematics-Box (T-Box) lockup or a DiLink software stall. Hold the physical volume roller 10–15 seconds until the screen power-cycles — that clears most of it. A fully frozen T-Box (no app, no GPS) needs a dealer flash. Try the reset before booking the appointment.
4. “TPMS Error” with healthy tyres (2023–24)
Two documented causes: a failed valve-mounted sensor (replace it), or the receiver losing its sensor-ID map after a tyre rotation (re-pair with a TPMS tool at the dealer). If the error appeared right after a service that rotated the tyres, it’s almost certainly the second one — say so at the counter and save a sensor.
5. The charging roar — not a fault
A loud, high-pitched roar from the front while fast-charging or parked on a hot day is the cooling fan protecting the battery at full speed. By design. Firmware has since smoothed the fan curve. We list it because it sends people to service counters — it shouldn’t.
6. Recirculation that un-sets itself
The climate system periodically overrides “recirculate” to bring in fresh air — an anti-CO₂ algorithm, not a fault — which matters in tunnels and traffic fumes. Double-pressing the lock button on exit forces the climate pre-conditioning cycle to shut down fully.
Buying used — 5-minute checklist
- What tyres are on it now? Factory ChaoYangs on a 2023 car means budget for replacements.
- Software version current? OTA history tells you how the car was kept.
- Cold-start the screen, pair a phone, run wired CarPlay for ten minutes.
- TPMS warning on the dash? Ask when the tyres were last rotated.
- Drive a wet or loose surface if you can — the traction story shows itself quickly.
Pattern sources: Australian owner-and-repairer aggregations and long-term press reviews (AU/NZ); symptoms triangulated across independent sources; single-source items labelled in our research records. Individual posts are not republished. The family-wide 12V pattern we document on other BYDs is not prominent in Dolphin reports — so we don’t list it rather than assume it.