BYD Sealion 6 — Common Problems by Pattern
No Australian recalls on the Sealion 6. Its defining used-buyer question is a suspension one: early 2024 cars ride differently from later ones, because BYD revised the local tune on the production line — and the update doesn’t transfer to cars already sold. The rest: a clicking front end with three possible culprits, the family 12V drain, and headlights aimed at the ground.
1. Clicking or ticking from the front wheels (2024–25)
A distinct click during slow, sharp turns — parking, roundabouts — most common on AWD Premiums but reported on FWD too. Three documented causes, in descending frequency: CV joints or driveshafts; the wheel rim’s inner face contacting the brake calliper under load (a manufacturing-tolerance issue — the fix is literally smoothing the rim face); or an intermediate steering shaft needing tightening. The diagnostic point: if a shop replaces a CV joint and the click survives, the other two causes exist and are cheaper — don’t accept a second driveshaft before the rim and steering shaft are checked.
2. The floaty rear ride (2024 builds) — and who actually got the fix
Early cars could feel floaty or “pogo” after speed bumps and dips at highway speed — under-damped rear shocks and soft springs tuned for smooth urban tarmac. BYD introduced a revised Australian suspension tune on later production, and press coverage citing BYD is explicit that it’s not retrofittable to delivered cars. One aggregation claims dealers can update damping on request; that conflicts with the manufacturer-attributed reporting, and we weight the latter. For a 2024 car that bothers you, the documented owner path is aftermarket dampers (Koni Special Active is the recurring choice). When buying used: test-drive over speed humps at speed — the difference between tunes is obvious from the back seat.
3. 12V battery drain
The family pattern: left parked for days, the car bricks — BMS top-up logic and always-on connectivity outrunning a small lead-acid battery. BMS software update at the dealer, AGM replacement as the durable fix, and the $30 Bluetooth monitor if you’ve been caught once. Full mechanism on the Seal page.
4. ADAS and fatigue monitoring
Loud “Please drive safely” alerts, sudden steering corrections, a camera that reads sunglasses as fatigue. Software V2.0.0+ softened it; settings still reset to ON each start. Same drill as every BYD we cover: build the shortcut, run it after every start, or make peace with the chimes.
5. Headlights aimed too low (2024–25)
Low beams illuminating 10–15 metres of road — factory alignment set too low, and genuinely hazardous at rural speeds. The dash-side height dial helps tonight; the real fix is a dealer mechanical re-alignment to the ADR cut-off, which is warranty work. If night driving feels blind, don’t adapt to it — book it.
Buying used — 5-minute checklist
- Build date first: early 2024 or post-tune? Drive speed humps at speed and feel the rear.
- Full-lock figure-eight in a car park, windows down: any clicking?
- Night test drive if possible — headlight aim shows itself immediately.
- Flat-battery history; BMS update; original 12V or AGM.
- Check the service schedule — year-8 is this model’s big-ticket visit ($1,119).
Pattern sources: Australian owner-and-repairer aggregations plus manufacturer-attributed press reporting on the suspension revision (cross-verified); the clicking-front-end causes are single-source and labelled as such in our research records. Where sources conflict on retrofittability, the conflict is stated above rather than resolved silently.