Updated guide based on reports from workshops, spare parts dealers and motorists: symptoms, probable causes, solutions and prevention on BYD models (Dolphin, Seal, Seal U, Atto 3, Han, Tang).
✅ Overview 2025: Range, strengths and real limitations
In 2025, BYD will consolidate its presence in Europe with a range that spans from city cars to sports sedans. Its strengths include the Blade Battery (LFP) for safety and longevity, efficiency, and a comprehensive ADAS package. The most frequently reported limitations include a growing service network, software/OTA issues, and rapid charging that is sometimes less consistent than that of leading competitors.
- Dolphin : compact urban car; 340–420 km WLTP.
- Seal / Seal U : sedans and crossovers with ranges of 500–570 km.
- Act 3 (Yuan Plus) : crossover 420–470 km WLTP.
- Han / Tang : top of the range, high performance and 7 seats (Tang).
🔧 BYD's main problems (2025 update)
This section summarizes the most reported critical issues on BYD: Blade battery/BMS , AC/DC charging , software/OTA , ADAS , air conditioning , brakes/regeneration and tires/ride .
- Blade Battery & BMS (autonomy, SOC, degradation)
- AC/DC Charging & Wallbox (slow/interrupted sessions)
- Software & OTA (infotainment blocks, reset)
- ADAS & safety (false warnings, calibrations)
- Air conditioning/Heat pump (winter output)
- Brakes & Regeneration (Disc Vitrification)
- Tires & EV setup (sidewall wear, pressures)
- Actual cost table (workshop range)
1) Blade Battery (LFP) & BMS: perceived battery life, SOC, degradation
- Typical symptoms: lower than declared range, fluctuating state of charge indicator, rare BMS warnings.
- Common causes: short usage profiles, low temperatures, charging always at fixed levels (always 100% or always 60–70%) without equalization cycles.
- Quick fixes: Software updates when available, periodic full cycles , correct tire pressure, winter preconditioning.
Learn more: BYD BLADE BATTERY: LIFESPAN, DEGRADATION AND BMS (2025)
2) AC/DC Charging & Wallbox: Slow or interrupted sessions
- Symptoms: Fluctuating power, DC sessions dropping or dropping out, longer than expected times.
- Causes: compatibility between charging station and car, battery temperature, worn or non-certified Type2/CCS cables.
- Solutions: try an alternative charging station, a certified home wallbox , quality cables, and battery preconditioning when applicable.
Learn more: BYD CHARGING: AC/DC, CURVE, AND WALLBOX (2025)
3) Software & OTA: infotainment crashes, reboots, connectivity
- Symptoms: Frozen screens, random reboots , intermittent Bluetooth/CarPlay/Android Auto.
- Causes: Firmware being updated, cache full, loose wiring/data ports.
- Solutions: OTA update as soon as available, factory reset (backup preferences), quality MFi/AA data cable, check grounds/power connections.
Learn more: BYD SOFTWARE & OTA: BUGS AND UPDATES (2025)
4) ADAS & safety: false warnings, pitching, lane keeping
- Symptoms: Unexpected front assist/lane keep warnings, abrupt interventions.
- Causes: Dirty or misaligned cameras/sensors, suboptimal calibrations, ADAS logic that needs updating.
- Solutions: Cleaning sensors, calibrating ADAS after glass/trim work, checking for updates.
Learn more: BYD ADAS: CALIBRATIONS AND FALSE POSITIVES (2025)
5) Air conditioning/Heat pump: winter performance and noise
- Symptoms: the passenger compartment struggles to heat up, compressor noises, and range drops when the air conditioning is on.
- Causes: low outside temperatures, clogged cabin filters, frequent defrost cycles.
- Solutions: cabin filter replacement, ECO profiles when autonomy is needed, pre-conditioning via app.
Learn more: EV AIR CONDITIONING: BYD HEAT PUMP (2025)
6) Brakes & regeneration: disc vitrification and creaking
- Symptoms: Noisy noises at low speeds, slower braking after long stops, surface rust.
- Causes: prevalent use of regenerative, discs not very mechanically “stressed”.
- Solutions: periodic controlled braking tests, suitable brake cleaner , caliper slippage check.
7) Tires & EV setup: sidewall wear and pressures
- Symptoms: irregular wear, rolling noise.
- Causes: instantaneous torque and EV mass, incorrect pressures.
- Solutions: scheduled rotations, compliant pressures, choice of EV-ready low-rolling-resistance tires .
Learn more: EV TIRES & BYD SUSPENSION (2025)
💶 Indicative costs (actual ranges from partner workshop network)
| Intervention | Cause/Symptom | Range €* |
|---|---|---|
| HV diagnosis + BMS parameter report | Inconsistent battery/SOC warnings | 80 – 180 |
| Software/OTA update in the workshop | Infotainment/ADAS bug | 60 – 160 |
| ADAS Calibration | False warnings, unstable lane keep | 120 – 260 |
| Air conditioning service (filter + check) | Poor winter yield/noise | 60 – 140 |
| Brake service (caliper cleaning + test) | Disc vitrification/squeaks | 70 – 160 |
| Tire rotation + wheel alignment | Uneven wear/noise | 60 – 120 |
*Ranges are indicative and vary by model, replacement part quality (OEM/Aftermarket) and local labor.
👉 Need spare parts and accessories for BYD ? Contact us at autoricambitritella.it and we'll provide you with the exact chassis code .
📖 Want to understand how to optimize charging times ? Read the guide: BYD Charging: AC/DC and Wallbox .
🚙 Problems by model (dedicated tabs)
- BYD DOLPHIN 2025: COMMON PROBLEMS, SOLUTIONS, AND ADVICE
- BYD SEAL 2025: COMMON PROBLEMS, SOLUTIONS, AND ADVICE
- BYD SEAL U 2025: COMMON PROBLEMS, SOLUTIONS, AND ADVICE
- BYD ATTO 3 YUAN PLUS 2025: MOST COMMON PROBLEMS, SOLUTIONS, AND ADVICE
- BYD HAN 2025: COMMON PROBLEMS, SOLUTIONS, AND ADVICE
- BYD TANG 2025: COMMON PROBLEMS, SOLUTIONS, AND ADVICE
🧰 BYD Maintenance & Spare Parts in Italy
Basic checklist
- Periodic HV-safety checks (trained personnel only) and brake fluid .
- Timely cabin filter replacement (air conditioning and defrosting performance).
- Scheduled tire rotation and correct pressures.
- Check software/ADAS updates at every service.
❓ Frequently Asked Questions
Does the Blade LFP battery suffer from the cold?
Yes, like all LFPs, performance and cold charging decrease. Use preconditioning, schedule regular full charges, and check tire pressures.
Why is fast charging sometimes slow or stops?
It depends on the battery temperature, charging station condition, charging curve, and firmware. Try a different charging station, update the software, and use certified cables.
Are BYD ADAS reliable?
Overall good. If you get false alerts, you may need to clean the sensors, calibrate them, and sometimes even update the software.
🏁 Conclusions
BYD 2025s offer attractive technology and low running costs when properly maintained and updated . Identifying recurring problems and taking preventative action on the battery, charging, software/ADAS, and tires extends the vehicle's life and reduces costs.
Having doubts about your chassis? Contact us: we'll check for compatible spare parts , EV-ready accessories , and upgrades for your BYD.
