Volkswagen ID.4: Engine coolant specifications

The cooling system of the Volkswagen ID.4 is factory-filled with a precisely balanced mixture of specially treated water and at least 40% G12evo coolant additive (TL 744-L). This formulation ensures optimal thermal management and long-term protection of critical components.

To maintain proper protection of the Volkswagen ID.4 cooling system, the coolant mixture must always contain a minimum of 40% coolant additive. In colder climates, the concentration can be increased to improve freeze protection. However, it must never exceed 55%, as a higher concentration may reduce both freeze protection efficiency and the cooling performance of the system.

The coolant additive used in the Volkswagen ID.4 can be identified by its distinctive violet color. This mixture protects the cooling system down to approximately -25 ºC (-13 ºF), prevents corrosion of aluminum components, reduces limescale formation, and raises the boiling point of the coolant, ensuring stable performance under various driving conditions.

When topping up coolant in the Volkswagen ID.4, always use a mixture of distilled water and at least 40% G12evo coolant additive to maintain proper corrosion protection and system efficiency → .

CAUTION

At extremely low temperatures, insufficient coolant protection may cause freezing, leading to vehicle malfunction and loss of heating in the Volkswagen ID.4. This can pose a serious risk to occupants.

• Always adjust the coolant mixture according to ambient temperature conditions.
• Use only manufacturer-approved coolant additives for the Volkswagen ID.4.

NOTICE

The violet color of the coolant in the Volkswagen ID.4 indicates the correct mixture. If the coolant appears brown or discolored, it may have been contaminated or mixed with an incompatible fluid, which can lead to serious damage.

• Only use approved Volkswagen coolant additives.
• If discoloration is observed, have the coolant replaced immediately by an authorized Volkswagen service facility.
• Never mix original Volkswagen coolant with non-approved products.

Engine coolant and related additives used in the Volkswagen ID.4 can be harmful to the environment. Always collect and dispose of any leaking fluids responsibly in accordance with environmental regulations.

Washer fluidVolkswagen ID.4 (E21) 2021-2026 Service Manual