This content was compiled automatically and has not yet been reviewed by a technician. For reference only.
For reference only. Always confirm part numbers and procedures for your specific vehicle.
Fault diagnosis
BYD SEALION 6 high engine coolant temperature and reduced power
The coolant temperature indication is high, accompanied by reduced power.
BYD SEALION 6 high engine coolant temperature and reduced power
Symptoms
- The coolant temperature indication is high, accompanied by reduced power. [1]
Possible causes
- Possible causes include insufficient coolant, leakage or a cooling fan that is not operating. [1]
Checks
- Stop safely and turn off air conditioning; if steam or coolant is being expelled, first switch off the vehicle and keep the bonnet closed until the discharge stops. Then follow the manufacturer's procedure to check for visible leaks and check the fan, keeping away from rotating parts. Do not open the expansion tank cap while the vehicle is hot. [1]
What to do
- If coolant is leaking or the fan is not turning, shut down and contact BYD; only check the level when there is no obvious leak and the system has cooled. Seek help immediately if coolant is severely low. [1]
Applicability and limits
- New Zealand SEALION 6, 2024 DM manual edition; only applies to configurations with an engine. This does not establish a model year, and dictionary mapping has not been established. Scope: unknown [1]
Sources
[Source 1] BYD SEALION 6 Owner’s Manual NZ 2024 — printed pp.223–224 / PDF pp.224–225, Engine Overheated (accessed 2026-10-30)
https://www.bydauto.co.nz/storage/uploads/388f4d01-1da6-4b8c-9525-76f9cda82157/BYD-SEALION-6-Owner%27s-Manual_NZ_2024_web.pdf
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