BYD SEALION 6 Warranty & Documentation

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BYD SEALION 6

This page provides an independent, unofficial overview of the BYD SEALION 6 warranty and documentation in Australia. The details presented herein are strictly derived from official distributor documents, including the BYD Warranty and Service Handbook 2026. Please note that trim names, specifications and prices reflect a compiled dataset (October 2026) and that BYD Automotive Australia may update variants, so every figure must be confirmed with an authorised BYD dealer or the official BYD Australia website. Official service/warranty page: https://bydautomotive.com.au/service-and-warranty

For those researching the BYD Sealion 6 price in Australia, it is important to understand that warranty terms remain consistent across the model range, irrespective of the final purchase cost. The national retail partner for BYD Automotive Australia is Eagers Automotive Limited, and vehicles are sold and serviced through BYD Experience Centres and authorised service centres across the Australian states and territories.

Contents

New Vehicle Warranty Coverage

The new vehicle terms cover the BYD Sealion 6 hybrid system, providing a warranty of 6 years or 150,000 km, whichever comes first. This period commences on the date of first registration, although in Western Australia, it begins from the date of delivery. The warranty applies to all variants in the lineup, meaning prospective buyers reading a BYD Sealion 6 Dynamic FWD vs Premium AWD review will find identical baseline coverage for both drivetrain configurations.

To locate an official service centre or Experience Centre, owners can use the official dealer locator tool. If there is any doubt regarding the application of the vehicle warranty, owners should consult an authorised BYD dealer.

Traction Battery and Drive Unit

A critical component of the plug-in hybrid powertrain is the high-voltage system. The BYD Sealion 6 traction battery warranty applies for 8 years or 160,000 km, whichever occurs first. This coverage includes a guarantee of at least 70% battery capacity retention over that period. The 8-year or 160,000 km limit also applies to the drive motor and drive motor controller. BYD may repair or replace these components with new, reconditioned, or remanufactured parts at its sole discretion. When evaluating the BYD Sealion 6 vs Mitsubishi Outlander PHEV in Australia, this 70% state-of-health guarantee is a central piece of documentation for potential owners.

To maintain the battery warranty, owners must follow strict care guidelines. The power battery should be kept at a 40% to 60% state of charge when the vehicle is unused for more than 7 days. If the vehicle is unused for over 3 months, the battery must be fully charged and then discharged back to 40% to 60% every 3 months. Damage caused by allowing the state of charge to drop to 0% and failing to recharge promptly is not covered. For full charging procedures, refer to the official owner’s manual.

Component Warranties and Exceptions

Several items on the BYD SEALION 6 carry shorter warranty periods. Genuine spare parts imported by BYD Australia, purchased by owners, and installed by an authorised BYD Retailer are covered for 12 months from the date of purchase. The lead-acid 12V starting battery is covered for 12 months or 20,000 km, whichever occurs first. The emergency charging and discharging devices are covered for 12 months. Paint application defects, such as overspray, low gloss, or mismatches, are covered for 1 year.

Tyres are explicitly excluded from the manufacturer’s vehicle warranty, and any tyre claims are subject to the tyre manufacturer’s own warranty. Anti-corrosion is covered only where it is due to a defect in factory materials or workmanship. Other components, such as suspension parts and infotainment screens, do not have separate warranty periods listed in the general handbook summary. Any claims regarding these items are subject to manufacturer specifications.

What Voids the Warranty

The manufacturer outlines specific conditions that will void warranty coverage. Normal wear and tear, regular maintenance items, and work performed by anyone other than an authorised BYD Service Centre are not covered. The warranty will also be voided by odometer tampering, racing, deep-water wading, or loading and towing beyond the vehicle’s specifications.

Furthermore, the warranty expressly prohibits unauthorised modifications. This includes third-party software changes, ECU or MCU tuning, and battery management bypasses. BYD Australia has no gas program, meaning there is no support for LPG, CNG, or autogas conversions. Any aftermarket gas modifications will void the manufacturer warranty entirely. Any planned technical modifications must be confirmed with BYD Automotive Australia before proceeding.

Maintenance of the high-voltage system requires specialist training. Owners must never attempt to open or touch the high-voltage orange cables. This work is dangerous and must be performed by an authorised BYD dealer or a qualified technician.

Servicing Requirements and Wear Items

To maintain the integrity of the warranty, the vehicle must be serviced strictly according to the manufacturer’s recommendations. The technical manual details how the BYD Sealion 6 DM-i super hybrid system operates and explains the required maintenance schedule. Standard service intervals are set at 20,000 km or 12 months, whichever comes first. However, the initial run-in service for the plug-in hybrid powertrain is required at six months or 3,500 km of HEV driving.

Certain items are considered consumables and a charge may be made for their replacement or adjustment during services. These chargeable items include servicing fluids, wheel alignment and balancing, tyres, brake linings, wiper blades, transmitter batteries, and gas struts. Additionally, body rattles and squeaks are only covered for the first 12 months or 20,000 km. After this period, diagnosing and resolving these noises becomes a chargeable item. Transferability of the warranty to subsequent owners is not explicitly detailed in the general handbook summary; therefore, the status of a transferred warranty should be checked by an authorised BYD dealer.

Documentation and Records

Owners are required to keep all relevant documentation, including the logbook, receipts, owner’s manual, and warranty book.

While the maintenance schedule lists various fluid replacements, the official documentation does not confirm the BYD Sealion 6 engine oil grade, a 0W-16 capacity, or exact filter replacement intervals. Owners searching for accurate BYD Sealion 6 1.5L Xiaoyun Atkinson cycle engine specifications must refer to the official handbook rather than relying on third-party estimates.

Additionally, the service record lists spark plug replacements for the DM series, but does not state a strict BYD Sealion 6 spark plugs change interval of 40,000 km. The vehicle is equipped with a BYD Sealion 6 60L fuel tank, but the use of 91 RON regular unleaded fuel is not stated as the official requirement in the brochure. All servicing facts must be read directly from the official documents.

Frequently Asked Questions

What is the warranty period for the BYD Sealion 6 in Australia?

The new vehicle is covered for 6 years or 150,000 km, starting from the date of first registration or the date of delivery in Western Australia.

How does the traction battery warranty work?

The high-voltage battery is covered for 8 years or 160,000 km, with a guarantee of at least 70% capacity retention over that period.

Can I perform maintenance on the high-voltage system myself?

No. All work on the high-voltage system, including the orange cables, is dangerous and must be performed by an authorised BYD dealer or a qualified technician.

Does the BYD Sealion 6 support LPG conversion?

No. BYD Australia does not offer or authorise LPG conversions, and aftermarket gas modifications will completely void the manufacturer warranty.

What engine oil and fuel grade should be used?

The official brochure does not specify these details; owners must refer to the official owner’s manual for the correct fuel grade and engine oil specification.

See Also

Sources

Disclaimer: This guide is for informational purposes only. Official specifications, recall details, and warranty terms are determined by BYD Automotive Australia (EVDirect). Always consult an authorized dealer or official owner’s manual.