BYD ATTO 3: Coolant below MIN or visible coolant leakage

BYD ATTO 3: Coolant below MIN or visible coolant leakage

Symptoms

• Coolant is below MIN when checked cold, or abnormal coolant loss is found. ^[1]

Possible causes

• The manual requires checking the cooling system for leaks when the level is low; it does not identify the water pump or battery pack as the root cause. ^[1]

Checks

• Check the level after the motor, electronic control system and cooling system have fully cooled; have a qualified technician check for leaks if the level keeps falling. ^[1]

What to do

• Use the coolant specified for the actual vehicle and identify the cause of the loss; do not open the pressure cap when hot or treat topping up as a repair. ^[1]

Applicability and limits

• Only applies to the corresponding ATTO 3 configuration in the New Zealand English-language owner's manual; the manual date is not treated as an applicable model year. No actual vehicle model has been linked. Do not extend to vehicles with the same model name, other powertrains or other markets. Scope: unknown ^[1]
• Only applies to the specific configuration in the cited manual; do not assume applicability to all vehicles with the same model name.

Related part categories

• Fluids / Coolant / Cooling system ^[1]

Sources

[Source 1] BYD ATTO 3 Owner’s Manual NZ 08/2022 — PDF pp.168–169 / printed pp.167–168, Cooling System (accessed 2026-11-01)
https://www.bydauto.co.nz/storage/uploads/7b3bb839-014f-457f-9f95-45118e270e00/ATTO-3-Owner%27s-Manual-NZ-08_2022.pdf