BYD Seal DM-i
Coolant capacity & service interval
BYD Seal DM-i coolant capacity ranges from 4,4 to 6,6 liters. Service intervals require a change every 100000 km or 48 months. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Seal DM-i (145 kW) (2023- ) |
|
| Seal DM-i (160 kW) (2023- ) |
|
Additional Notes
- The BYD Seal DM-i runs two separate cooling circuits, one for the electric motor and one for the High Voltage Battery, each carrying its own coolant capacity figure.
- In the 145 kW variant, the electric motor cooling circuit holds 6.6 liters, while the High Voltage Battery circuit holds 4.4 liters, bringing the combined total to 11.0 liters across both loops.
- The 160 kW variant carries 6.5 liters in the electric motor circuit, a reduction of 0.1 liter compared to the 145 kW variant, while the High Voltage Battery circuit remains at 4.4 liters.
- The 4.4-liter High Voltage Battery circuit capacity is shared across both power variants, indicating a common battery thermal management layout regardless of motor output rating.
- Both variants specify a coolant change interval of 100,000 km or 48 months under normal use conditions, whichever comes first, applying equally to both the motor and battery circuits.
- A 48-month interval on a normal-use schedule means coolant degradation by time is treated as a parallel limiting factor alongside distance, which is relevant for lower-mileage operation where the kilometer threshold may not be reached within four years.