Nissan LEAF 2023 Owners Manual
12.1.2. Under the bonnet and vehicle
The maintenance items listed here should be checked periodically.
12-volt battery* (except for maintenance free batteries)
Check the fluid level in each cell. It should be between the UPPER and LOWER lines. Vehicles operated in high temperatures or under severe conditions require frequent checks of the battery fluid level.
Brake fluid level*
Make sure that the brake fluid level is between the <MAX> and <MIN> lines on the reservoir.
Coolant level*
Check the coolant level when the high voltage parts are cold. Make sure that the coolant level is between the <MAX> and <MIN> line on the reservoir.
Fluid leaks
Check under the vehicle for oil, water or other fluid leaks after the vehicle has been parked for a while. Water dripping from the air conditioner after use is normal. If you should notice any leaks, check for a cause and have it corrected immediately.
Windscreen washer fluid*
Check that there is adequate fluid in the reservoir.