Park the vehicle on a level surface and let the engine cool completely
Check the coolant level in the reservoir and radiator
Inspect hoses, clamps, radiator, water pump, thermostat housing, and coolant reservoir for visible leaks
Tighten loose hose clamps and fittings
Replace cracked, swollen, or damaged hoses
Replace damaged clamps, gaskets, or seals
Repair or replace a leaking radiator
Replace a leaking water pump
Replace a leaking thermostat housing gasket
Repair or replace a cracked coolant reservoir
Check the radiator cap and replace it if faulty
Flush and refill the cooling system with the correct coolant mix
Bleed air from the cooling system after refilling
Test the system for leaks and monitor coolant level after repair
Seek professional repair if the leak source is unclear or the leak is severe