2025 ATTO 2 front-seat parts: separate adjustment, heating and ventilation

For a workshop receiving “ATTO 2 seat ventilation does not work”, first check whether the vehicle originally has ventilation. Australian 2025 model year (MY25) Dynamic and Premium differ. Even on an equipped seat, the fan stopping when heating is selected can follow the manufacturer’s normal control logic. Separate these points before discussing parts.

Adjustment and comfort functions are separate specifications

BYD’s MY25 Australian specification lists these front-seat differences:[Manufacturer specification, page 3][R02]

| Function | Dynamic | Premium |
| --- | --- | --- |
| Driver-seat adjustment | 6-way manual | 6-way electric |
| Front passenger-seat adjustment | 4-way manual | 4-way electric |
| Front-seat heating and ventilation | Not fitted | Fitted |

“Seat moves”, “seat heats” and “seat has ventilation” require separate descriptions. Electric adjustment concerns position, not confirmation of heating or ventilation equipment. Dynamic’s absence of ventilation is not a ventilation-fan fault.

This also affects purchasing: establish whether an original function is missing or the vehicle never had it before considering repair parts. Similar upholstery and seat shape do not establish identical internal construction across trims.

Selecting heating stops the ventilation fan

For seats with the relevant equipment, the ATTO 2 right-hand-drive manual linked on BYD Australia’s website describes levels 1 and 2 and OFF for heating and ventilation. The functions cannot operate simultaneously. Selecting heating after ventilation stops the fan and starts heating; selecting ventilation instead stops heating and starts the fan.[Manual, page 56][N05]

If the observation is precisely “the fan stops when heating is selected and runs again when ventilation is selected”, it matches that mutually exclusive control description. The stop alone is no basis to replace the ventilation fan.

Before inspection, establish the selected function and level, distinguishing OFF from active levels 1 and 2. Reporting “no airflow in heating mode” as a fault misdirects investigation from the outset.

A real issue still does not make every seat function an assembly fault

For behaviour beyond those equipment differences and switching logic, describe position-adjustment failure, abnormal heating or unresponsive ventilation separately. Inspection can then address the actual function instead of jumping from “seat not working” to complete-seat replacement.

These descriptions define the inspection target only. Replacing a switch, internal component or assembly still requires inspection findings for the corresponding function.

Scope and verification

This article covers only Australian MY25 ATTO 2 Dynamic and Premium. Equipment allocation follows the MY25 manufacturer table. The website-linked manual supplements operation of fitted functions only; starred features are not applied to Dynamic, and the manual filename is not used as model-year evidence.

No public data was available in the reviewed material for separate supply of heating pads, temperature sensors or ventilation fans, OE numbers, or diagnostic resistance, current, temperature and time limits. [To be verified] Check compatibility or interchangeability using the VIN and the local Australian manufacturer parts catalogue. Seat repair must follow the applicable manufacturer procedures.

For seat components, use the parts enquiry page.

[R02]: https://bydautomotive.com.au/brochures/BYD-ATTO-2-2025.pdf
[N05]: https://bydautomotive.com.au/brochures/BYD-ATTO-2-Owners-Handbook-2025.pdf
[N06]: https://bydautomotive.com.au/atto-2