BYD Dolphin A/C odour: ventilation and service checks

China-market owner report

In a discussion dated 2022-02-04, the linked China-market report raised this issue: A Dolphin owner described persistent window misting and cabin odour; their theories about airflow are unverified. This is an individual account, not a confirmed diagnosis or failure-rate finding. The steps below use the export handbook.

Checks to make while safely parked

1. 1Compare operating modesWhile parked, note the smell with fresh air, recirculation and cooling. Describe whether it disappears soon after start-up or remains throughout use; this makes a service report more useful.
2. 2Inspect the intake areaCheck the grille near the windscreen for accessible leaves or snow. Keep the cabin and under-seat airflow routes clear without dismantling the A/C system.
3. 3Reduce retained moistureFollow the manual’s advice to turn off A/C cooling and ventilate naturally before parking. Do not confuse leaving the fan on with immediately switching the whole climate system off.
4. 4Book inspection if neededReport persistent odour, water where it should not be or weak cooling to BYD. Mention recent filter changes and cleaners already used so the technician can assess the actual condition.

Tick steps as you go. Your progress stays in this tab.

Check the result and know when to stop

A blower that starts briefly after the car is switched off and locked can be the documented evaporator-drying routine. Its operation does not prove a particular smell is harmless. Avoid masking recurring symptoms with fragrance or pouring cleaners into air outlets; important A/C maintenance belongs with trained service staff.

Common questions