BYD Sealion 6 — Common Problems by Pattern

Written and edited by Ethan Cole, Editor-in-Chief · ✓ Technically reviewed by Daniel Wei Chen — Senior Chinese Automotive Diagnostics & Repair Specialist, Sydney · 24 October 2026.
BYD Sealion 6 guides: Overview Service schedule Oil & fluids Problems Recalls (BYD)

When we searched the Australian Government recall register for BYD on 6 October 2026 (a browser reading, not an archived copy), it listed no Sealion 6 recall. The Sealion 6’s defining used-buyer question is a suspension one, by our reading: owners report that early 2024 cars ride differently from later ones, because, press reports citing BYD say, 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, a 12V battery drain and headlights aimed at the ground. Each owner-reported item on this page is labelled as an unverified owner report.

1. Clicking or ticking from the front wheels (2024–25)

Unverified owner report: from australiancar.reviews, an Australian compendium of owner-reported faults, as our research notes recorded the report on 22 August 2026; we have not verified the report, and we hold no copy of that source. That source reports a distinct click during slow, sharp turns — parking, roundabouts — more on AWD cars than on FWD. Our notes give three possible causes: CV joints or driveshafts; the wheel rim’s inner face touching the brake calliper under load, a manufacturing tolerance fixed by smoothing the rim face; or an intermediate steering shaft needing tightening. This page has also said that the clicking is most common on AWD Premiums, that the three causes are documented and run in descending order of frequency, and that the other two are cheaper than a driveshaft; our notes record no frequency and no cost, and we no longer call the causes documented. We hold no second source for any of them, so if a CV joint is replaced and the click stays, ask for the rim and the steering shaft to be checked.

2. The floaty rear ride (2024 builds) — and who actually got the fix

Unverified owner report: from australiancar.reviews, carexpert and carsales, as our research notes recorded the reports on 22 August 2026; we have not verified the reports, and we hold no copy of those sources. Those sources report that early (2024) cars can feel floaty or “pogo” after speed bumps and dips at highway speed. Our notes give under-damped rear shocks and soft springs tuned for comfort as the cause. Our notes also record a conflict: carexpert and carsales report BYD as saying that the revised Australian suspension tune on later production is not retrofittable to delivered cars, while one source claims dealers can update the damping on request; this page has weighted the reports that cite BYD. Our notes give aftermarket dampers, for example Koni Special Active, as what some owners fitted. When buying used, test-drive over speed humps: this page has said the difference between tunes is obvious from the back seat, which our notes do not record.

3. 12V battery drain

Unverified owner report: from australiancar.reviews, an Australian compendium of owner-reported faults, as our research notes recorded the report on 22 August 2026; we have not verified the report, and we hold no copy of that source. That source reports the 12V battery going flat while the car sits idle. Our notes give the BMS not waking to top it up, and always-on connectivity, as the cause. This page has also said that the car bricks when it is left parked for days, called the drain a family pattern and suggested a Bluetooth battery monitor, which it priced at $30; we no longer call it a family pattern, and our notes record neither that duration nor that price.

Our extraction of the Sealion 6’s owner’s manual covers the vehicle-data pages only, so we quote nothing from it on the 12V battery. If the 12V battery goes flat or the car will not start, take it to BYD authorised service and leave the battery itself to them.

4. Headlights aimed too low (2024–25)

Unverified owner report: from australiancar.reviews, an Australian compendium of owner-reported faults, as our research notes recorded the report on 22 August 2026; we have not verified the report, and we hold no copy of that source. That source reports low beams lighting only 10–15 metres of road on 2024–25 cars. Our notes give a factory alignment set too low as the cause, the dash-side height dial as the stopgap and a dealer mechanical re-alignment to the ADR cut-off as the fix. This page has also said that the low aim is genuinely hazardous at rural speeds and that the re-alignment is warranty work; our notes record neither. If night driving feels blind, don’t adapt to it — book the re-alignment.

Buying used — 5-minute checklist

Correction note: Each owner-reported pattern on this page is now labelled as an unverified owner report: we have not verified these patterns, and we hold no copy of their sources. Causes and fixes are given as our notes record them, and what this page said beyond our notes is kept and marked as such; the exceptions are named below. The source line no longer calls the press reporting cross-verified, and the 12V section no longer calls its drain a family pattern. We withdrew the battery-management update and the replacement battery that the 12V section gave as fixes, and the checklist question on them. We also removed “at speed” from this page’s suggestions to drive over speed humps.

Pattern sources: Australian owner-and-repairer aggregations plus press reporting attributed to the manufacturer on the suspension revision (not verified by us); the clicking, 12V and headlight sections each rest on a single source, australiancar.reviews, as our research notes recorded it on 22 August 2026; we hold no copy of these sources, and each item is labelled as an unverified owner report where it appears. Where sources conflict on retrofittability, the conflict is stated above rather than resolved silently. The 12V section’s owner’s-manual note rests on our extraction of the manual’s vehicle-data pages, as that section says.

Disclaimer: Information on this page is general guidance only and does not replace the manufacturer’s official documentation or the judgement of a qualified technician. Issue patterns vary between markets and production years. Last verified: 22 August 2026.