Why This Schedule Matters More Than It Looks
A BYD Atto 3 service schedule is not something you can infer from the car. There is no timing belt, no oil filter interval in the familiar sense, and the regenerative braking means the friction brakes wear at a rate that has nothing to do with the odometer. BYD publishes the real schedule in the owner’s handbook — roughly pages 171 to 175 of a 210-page PDF — and in practice very few independent workshops have read it. This page is that schedule, in English, with the workshop interpretation attached.
The short version: intervals are whichever comes first, time or mileage. The first service falls at three months or 5,000 km, the second at 12 months or 20,000 km, and most items then repeat every 12 months or 20,000 km. Four items break that pattern and are easy to miss — they are pulled out separately below.
How the Interval Logic Works
Two things trip people up on this car. First, the schedule is mileage or time, not both — a low-mileage city car still needs its 12-month service. Second, an Atto 3 used as a ride-hailing or delivery vehicle falls into the severe-duty category, and that changes several intervals materially rather than slightly.
BYD Atto 3 Maintenance Schedule: Inspection Items
Standard condition. First check at 3 months / 5,000 km, second at the interval shown, then repeated every time the same interval elapses.
| Item | Interval |
|---|---|
| Chassis fasteners | 12 months / 20,000 km |
| Brake friction blocks and discs | 12 months / 20,000 km |
| Brake pedal and EPB switch | 24 months / 40,000 km |
| Brake piping and hoses | 24 months / 40,000 km |
| Caliper guide pins | First at 12 months / 20,000 km, then every 24 months / 40,000 km |
| Steering wheel and tie rods | 24 months / 40,000 km |
| Drive shaft boots | 24 months / 40,000 km |
| Ball pins and boots | 24 months / 40,000 km |
| Front and rear suspension | 24 months / 40,000 km |
| Front and rear wheel alignment | 24 months / 40,000 km |
| Wheel bearing clearance | 24 months / 40,000 km |
| Tyre condition, pressures and TPMS | 12 months / 20,000 km |
| Tyre wear and rotation | At every service, rotate as required |
| EPS ground point — contamination or erosion | 12 months / 20,000 km |
| EPS connectors — seating and pin erosion | 12 months / 20,000 km |
| EPS ECU corrosion | 24 months / 40,000 km |
| EPS ECU to motor connections — contamination or corrosion | 12 months / 20,000 km |
| Coolant level in the expansion tank | 12 months / 20,000 km |
| Brake fluid level | 12 months / 20,000 km |
| Module fault codes — read and record, then clear | 12 months / 20,000 km |
| HV battery tray, crash bar, shield, crash valve, thermal insulation and mounting torque | 12 months / 20,000 km |
| Powertrain leaks or impact damage | 12 months / 20,000 km |
| HV harness and connector security, pin erosion | 12 months / 20,000 km |
| HV module deformation or oil staining | 12 months / 20,000 km |
| Charging connector interface — contamination or erosion | 12 months / 20,000 km |
| Wading marks on high-voltage components | 12 months / 20,000 km |
| Module software — update if available | 12 months / 20,000 km |
| Headlight output and dimming | 12 months / 20,000 km |
| Low beam initial downtilt calibration | Every 10,000 km |
| HEPA filter — inspect, replace if required | 12 months / 20,000 km |
| Door brakes — clean and apply 0.3–0.8 g grease to lever, rivet joint and pivot | 12 months / 20,000 km |
| Hood lock and fasteners | Every 12 months |
| Wiper arm lock nut torque | 12 months / 20,000 km |
The Four Items on Their Own Cycle
These are the ones that matter commercially, because they are predictable revenue on a car that otherwise needs very little:
| Replacement item | Interval |
|---|---|
| BYD Atto 3 brake fluid | Every 24 months or 40,000 km |
| BYD Atto 3 gear oil — transmission | First at 24 months or 40,000 km, then every 24 months or 48,000 km |
| Drive motor coolant — long-life organic acid type | Every 4 years or 100,000 km |
| Low beam downtilt calibration | Every 10,000 km |
Note the gear oil quirk: the first change lands at 40,000 km and every subsequent change at 48,000 km. It is not a repeating 40,000 km interval, and quoting it as one is a common error.
Severe Duty: When the Schedule Tightens
If the car regularly sees any of the following, the brake and chassis items move from 24 months / 40,000 km to 12 months / 20,000 km, and the HEPA filter is inspected every six months instead of annually:
- Dusty environments or frequent exposure to salt-laden air
- Regular driving on rough, flooded or mountain roads
- Frequent cold-weather operation
- Frequent hard braking
- Towing a trailer
- Use as a taxi or ride-hailing vehicle
- Congested urban driving above 32°C for more than half of total travel time
- Speeds above 120 km/h at over 30°C for more than half of total travel time
- Frequent overloading
For the export markets where the Atto 3 sells best, this is not a theoretical category. Dust, heat, rough roads and ride-hailing duty all appear regularly, and it is worth confirming with the customer which applies before you quote a service.
Battery Calibration: The Item Nobody Books
BYD specifies a full charge and discharge cycle at least every six months or 72,000 km so the battery management system can re-calibrate. Where that has not been done, state-of-charge accuracy drifts and the customer reports range that no longer matches the display. It is a customer-education item as much as a workshop one — and a useful thing to check on any car you see for the first time.
What an Independent Workshop Can Actually Do
Most of the schedule is routine mechanical and visual inspection, and an independent workshop can handle it without special tooling: brakes, suspension, tyres, alignment, coolant level, brake fluid replacement, gear oil, door brakes, wipers and the HEPA filter.
Three items are different. Reading and clearing module fault codes properly, applying module software updates, and any work involving the high-voltage pack tray or harness require manufacturer-level diagnostic access. The handbook lists these as scheduled items, which is why a car can be mechanically perfect and still need a dealer visit — or a workshop with the right access — to complete the service to specification.
Stuck on a Fault Code or a Locked Module?
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Companion Pages: Putting These Documents to Work
The manuals above are the source. These pages are the extracted, workshop-ready versions of what is inside them.
- BYD high voltage shutdown procedure — Before touching anything on the high-voltage side — both disable methods, the 60-second de-energising window, and the fire and submersion procedures.
- BYD battery fire and thermal runaway response — A flooded or collision-damaged car arrives — the 24-hour cooling figure, the 45-minute release window, the 15 m isolation distance, and the four methods BYD rules out.
- BYD Dolphin fuse box diagram — Chasing an electrical fault — all 53 under-hood and 31 dashboard positions, and the component each one protects.
- BYD coolant type and capacity — Booking a cooling job — the published specification and fill volume for all ten current models, and which ones run two circuits.
- BYD warning light meanings — A customer reports “a light came on” — which lamps mean stop now, which mean book it in, and the electric-only symbols.
Source
Compiled and rewritten from the BYD Atto 3 Owner’s Handbook, Maintenance section (English edition, 2025). Intervals are quoted as published by the manufacturer for standard conditions; confirm against the handbook for the specific model year and market before quoting a job. Severe-duty conditions and intervals may differ between markets and model years.