LED interior swaps on the BYD Atto 3 are one of the cheapest cabin upgrades. The current-generation cabin bulbs are usually T10 (W5W) for map and glovebox, festoon (36-42 mm) for the dome, and occasionally BA9s for the boot. Pop one out and read the code printed on the metal cap before ordering - the bulb size is universal across most cars, so a set bought for a Golf usually fits the BYD Atto 3 too, provided the codes match.
The BYD Atto 3 is mildly CANbus-sensitive. BYD electronics behave more like a Chinese-market Toyota than a VW-group car - straight LED swaps typically work without CANbus warnings, but the DiPilot ADAS system is fussy about anything intruding into the windscreen camera view. Note the BYD Atto 3 already ships with factory-fit LED cabin lighting on higher trims - the swap only matters if you have an entry EV trim with halogen bulbs (which are increasingly rare on new EVs). A cheap CANbus-ready LED bulb (a few pounds more than a plain one) removes the risk entirely - there is no downside, so buy the CANbus-ready version even if standard bulbs would probably work.
Colour temperature is where personal taste comes in. 4000-5000K neutral white reads maps and phone screens without eye fatigue; 6000K daylight-white is brighter but harsher; 3000K warm-white can look dim on cheap bulbs. Whatever you pick, pick one temperature across the entire cabin - mixing LEDs and stock incandescents in the same headliner looks obviously wrong once the doors are closed at night.
Frequently asked questions
Do LED interior bulbs affect the BYD Atto 3’s CANbus or infotainment?
Rarely on interior sockets, more often on exterior. BYD electronics behave more like a Chinese-market Toyota than a VW-group car - straight LED swaps typically work without CANbus warnings, but the DiPilot ADAS system is fussy about anything intruding into the windscreen camera view..
Is a resistor pack needed?
Not for interior bulbs on the BYD Atto 3 - CANbus-ready LEDs manage the current draw internally. Resistor packs are for exterior turn-signal LEDs.