Nissan LEAF 2023 Owners Manual
12.2.1.1. Checking coolant level
Check the coolant level in the reservoir when the high voltage parts are cold. If the coolant level is below the <MIN> level (2), open the reservoir cap and add coolant up to the <MAX> level (1).
Tighten the cap securely after adding coolant.
If the cooling system frequently requires coolant, have it checked by a knowledgeable LEAF repairer such as a NISSAN certified electric vehicle dealer.
Owners Manual