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Never remove the coolant reservoir filler cap when the electric motor cooling system is hot. Escaping steam or scalding water could cause serious personal injury.

Unscrew the filler cap slowly, allowing the pressure to escape before removing completely.

Antifreeze is highly flammable. Do not allow antifreeze to come into contact with open flames or other sources of ignition. A fire may result.


Antifreeze is poisonous and can be fatal if swallowed. Keep containers sealed and out of the reach of children. If accidental consumption is suspected, seek medical attention immediately.

If the fluid comes into contact with the skin or eyes, rinse immediately with plenty of water.


When traveling in territories where the water supply contains salt, always make sure to carry a supply of fresh (rain or distilled) water. Topping up with salt water causes serious electric motor damage.


The use of non-approved antifreeze has an adverse effect on the electric motor's cooling system and, therefore, electric motor durability. See LUBRICANTS AND FLUIDS.

Antifreeze damages painted surfaces. Soak up any spillage with an absorbent cloth immediately. Wash the area with a mixture of car shampoo and water.


Do not use any anti-leak products in the cooling system, as it causes damage to the vehicle.

Antifreeze contains important corrosion inhibitors. The antifreeze content of the coolant must be maintained at 50% to 60% all year round, not just in cold conditions. To make sure the anti-corrosion properties of the coolant are maintained, the antifreeze content should be checked once a year. Regardless of the distance traveled, the antifreeze should be replaced every 10 years. Failure to do so may cause corrosion of the radiator and electric motor components. The specific gravity of a 50% antifreeze solution at 68°F (20°C) is 1.068 and protects against frost down to -40°F (-40°C).

To top up the electric motor coolant:

  1. Rotate the electric motor coolant reservoir filler cap counter-clockwise and remove.

  2. Top up to the MAX indicator mark on the side of the coolant reservoir. Use a mixture of 50% water and 50% antifreeze. See LUBRICANTS AND FLUIDS.


    In an emergency, and only if the approved antifreeze is unavailable, top up the cooling system with clean water. Be aware of the resultant reduction in frost protection. Do not top up or refill with conventional antifreeze formulations. If in doubt, consult a qualified technician.

  3. To refit the coolant reservoir filler cap, rotate the filler cap clockwise until a resistance if felt.

  4. Refit the under-hood cover. See UNDER-HOOD COVERS REFITTING.