Toyota Highlander (EU)
Coolant capacity & service interval
Toyota Highlander (EU) coolant capacity ranges from 1,9 to 9,4 liters. Service intervals include checks at 30000 km and changes at 90000 km, 150000 km, and 240000 km. The data covers 8 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
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| Highlander 2.5 Hybrid AWD (2021- ) |
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| Highlander 2.5 Hybrid AWD (2021- ) |
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| Highlander 2.5 Hybrid AWD (2020-2021) |
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| Highlander 2.5 Hybrid AWD (2020-2021) |
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Additional Notes
- The Toyota Highlander (EU) 2.5 Hybrid AWD carries two separate coolant circuits, each with its own capacity and service schedule: the main cooling system holds 9.4 liters, while the inverter cooling system holds 1.9 liters.
- The 9.4-liter figure for the main cooling system represents a full system fill, accounting for the volume held across the engine, radiator, heater core, and associated hoses in a hybrid powertrain of this size.
- The inverter cooling system's 1.9-liter capacity reflects the comparatively small, dedicated circuit that manages heat generated by the power electronics, separate from the combustion engine's thermal loop.
- For the main cooling system under normal use conditions, the change interval is set at 90,000 km, with a check interval of 30,000 km throughout the 2020-2021 model years.
- Under a first-change-only condition, the main cooling system's initial drain is extended to 150,000 km, after which the 90,000 km normal interval applies for subsequent changes.
- The inverter cooling system follows the same 90,000 km change interval under normal use conditions, with checks also scheduled at every 30,000 km.
- Under a first-change-only condition, the inverter cooling system's initial change is deferred significantly to 240,000 km, a notably longer interval than the 150,000 km first-change threshold applied to the main cooling system.
- The 30,000 km check interval is consistent across both the main and inverter cooling systems, regardless of whether the use condition is normal or first change only.
- Specifications for the 2021 starting year entry are identical to those of the 2020-2021 entry across all four rows, covering both cooling circuits and both use conditions.