BYD DOLPHIN 2025: COMMON PROBLEMS, SOLUTIONS, AND ADVICE

✅ 2025 Overview: Versions, Strengths/Weaknesses

The BYD Dolphin is a compact electric car with a Blade Battery (LFP) , AC/DC charging, and a good price/features ratio. Its strengths include city efficiency, roominess, and ADAS features. Typical limitations include some noise from the trim on rough surfaces, software calibrations (climate/infotainment) that sometimes need updating, and a 12V auxiliary battery that is sensitive to short-term use.

• Traction battery: LFP, active thermal management, generally limited degradation with correct use.
• OTA: Online updates for infotainment/ADAS/climate; it's a good idea to keep them always active.
• Maintenance: No engine oil; brakes, cabin filters, brake/coolant fluids , tires, and trim controls remain.

🔧 Main problems with the BYD Dolphin (2025 update)

The following entries summarize the most recurring cases in our network (2024-2025): symptoms, probable causes and practical solutions.

1) 12V auxiliary battery: rapid discharge, control unit reset

• Typical symptoms: slow dashboard start-up, random error messages, infotainment that restarts, low battery warnings after prolonged stops.
• Probable causes: short and long periods of use with the vehicle stationary, incomplete charging cycles, temporary parasitic absorption (post-OTA).
• Quick fixes: Battery test/DC-DC switching, replace 12V if below threshold, software update, and 12V BMS reset where applicable. Recommend a smart maintainer if the car will be sitting for a long time.

2) Electric Power Steering (EPS): Updates/Checks

• Symptoms: steering warning light, temporary stiffness, EPS fault messages.
• Causes: software calibrations to be updated, torque sensors to be realigned, rare cases of control units to be replaced on specific batches.
• Solutions: OBD diagnosis , check campaigns/updates, sensor realignment and, if necessary, EPS control unit replacement under warranty/extension.

3) Climate control & infotainment: cold air, resettable profiles

• Symptoms: Air inconsistent with set temperature, user profiles resetting after update, startup lag.
• Causes: HVAC/infotainment software needs updating, cabin temperature sensor not “learned” post-OTA.
• Solutions: OTA to the latest release, HVAC reset from service menu, cabin filter check (replace if saturated), sensor calibration.

4) Noises/setup: plastics, gaskets, arms/bars

• Symptoms: crunching on cobblestones, thumping on potholes, wind noise at highway speeds.
• Causes: panel clips/hooks not fully seated, door seals need lubricating/adjusting, stabilizer bar connecting rod or ends with play, imperfect toe-in.
• Solutions: Lubricate/adjust seals, check tightness, replace worn connecting rods/heads , align and align . Consider EV-ready tires to reduce noise and fuel consumption.

5) Charging: Occasional slowness, moisture in socket, cables

• Symptoms: AC power lower than expected, charging stops when raining or washing, socket check messages.
• Causes: Damaged/poor Type‑2 cable, wet/oxidized contacts, temporary wallbox limitations, on-board charger firmware.
• Solutions: Cross-test with another cable/wallbox, dry the contacts thoroughly , update the on-board charger in the workshop, check the earthing of the home system.

MCEVKELN EV Charger Type 2 – 3.6KW

Portable charging cable Type 2 Schuko 5M, power 3.6KW with 6-16A switch box. Compatible with IEC 62196-2, ideal for electric and plug-in hybrid cars.

🛒 Buy now on Amazon

6) Brakes on EVs: regeneration and vitrification of discs/pads

• Symptoms: low speed whistling, long braking after rain, slight vibrations.
• Causes: prevalent use of regeneration → pads that work poorly and glazing (vitrification), oxide on the discs.
• Solutions: Periodic moderate and prolonged braking cycles to clean the discs, clean the calipers/guides, and replace the pads/discs if they are above the limit. Learn more in the dedicated guide: Brakes on BYD EVs (2025) .

VALVOLINE BRAKE CLEANER 500ML – 887059

Powerful brake and clutch cleaner spray. Removes dirt, grease, and oil residue, improving braking system safety and performance.

🛒 Buy now at Autoricambi Tritella

💶 Indicative costs (actual ranges from partner workshop network)

*Ranges are indicative and vary by year, trim, part quality (OEM/Aftermarket) and local labor.

🧭 Practical advice for maintenance and purchasing

• OTA: Keep updates active and check release notes (HVAC/infotainment/EPS).
• 12V: If you don't use your car much, consider a smart maintainer . After replacing the battery, reset/adapt the BMS where applicable.
• EV-ready tires: Low-resistance compounds and reinforced carcasses better manage instantaneous torque and weight. Learn more: BYD EV Tires & Suspension .
• Brakes: Use mechanical braking with long, progressive braking 1-2 times a week to limit glazing.
• Charging: Choose certified cables; if you frequently travel in the rain, dry the outlet before charging.

❓ Frequently Asked Questions

🏁 Conclusions

The BYD Dolphin 2025 is a compelling city EV. Keeping track of 12V, OTA updates , and EV-ready suspension and tires minimizes minor recurring issues and keeps the car efficient and safe.

Having doubts about your chassis? Contact us: we'll check compatible spare parts , campaigns/OTAs , and maintenance plans for your BYD.