Coolant: Checking The Level And Antifreeze Content

WARNING: This page is about a different car, the 2014 Porsche Cayenne, 2013 Porsche Cayenne, 2012 Porsche Cayenne, and 2011 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Toxic substances

Danger of poisoning or suffocation
Danger of burns to the eyes and skin
→ Ventilate the work area well.

→ Never ingest or inhale.

→ Read specific information on the Hazard Sheet.

→ Wear personal protective gear.

→ Do not smoke, eat or drink in the work area.

WARNING: Hot fluid

Danger of scalding
→ Let the fluid cool down.

→ Wear personal protective gear.

WARNING: Rotating components

Danger of limbs being trapped or severed
→ Disconnect power supply to the drive motor of components or to the battery.

NOTE: Cooling circuit not filled correctly

Risk of damage to vehicle components
→ After relieving the system pressure, do not start the engine or high-voltage system.

→ Fill and bleed the cooling system correctly before starting the engine or high-voltage system.

Information

The coolant filled in at the factory is intended to suffice for the entire service life. As long as the coolant is not contaminated by foreign bodies or other fluids it need not be changed.
Different coolant additives must not be mixed and doing so may damage the cooling system. Only use original Porsche coolant additives.
The coolant must be set to antifreeze protection of -37°C. This corresponds to a mixing ratio of 50: 50 (coolant additive: water). This mixing ratio provides optimum corrosion and antifreeze protection.
Coolant additives, coolants and cleaning agents must be disposed of according to the respective, applicable national laws.
Seals in the cooling system must be replaced by new ones following disassembly.

Information

Test conditions for checking engine coolant level =>

Engine cold
Vehicle parked horizontally on level ground

Open the maintenance cover -1- .

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Maintenance cover
Carefully open the cap on the coolant reservoir. Unscrew the cap in an anti-clockwise direction.

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Cap on coolant reservoir

Check antifreeze content with a commercially available antifreeze tester. If it is lower than -37°C, it must be adjusted accordingly.

The coolant level must not drop below the minimum mark.

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Checking antifreeze content

Information

The following table specifies how much coolant must be replaced by pure antifreeze in order to adjust the freezing point to -37°C.

Measured antifreeze protection in°C	Antifreeze quantity to be added (in litres)
- 5	9
- 10	8.5
- 15	7.5
- 20	7
- 25	5
- 30	3.5
- 35	1.5

Checking engine coolant level

Open the maintenance cover -1- .

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Maintenance cover
Check the engine coolant level. If necessary, fill the coolant reservoir with coolant to the maximum marking. If there is considerable coolant loss, the cause must be investigated.

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Coolant reservoir
Carefully open the cap on the coolant reservoir if necessary. Unscrew the cap in an anti-clockwise direction.

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Cap on coolant reservoir
Screw cap back on the coolant reservoir.

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Cap on coolant reservoir
Close the maintenance flap.