what does it mean if my Volkswagen Golf MK7 (2015-2019) is leaking coolant?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Safety gear: gloves and goggles.
• Ensure the engine is cool before starting the work.

2. Locate the Leak

• Use the pressure tester to pressurize the cooling system.
• Inspect all components thoroughly while under pressure to spot leaks.

3. Repair or Replace Components

• Hoses: If a hose is cracked or leaking, disconnect it using a hose clamp tool and replace it with a new hose. Ensure proper routing and secure connections.
• Radiator: If the radiator has a leak, remove it by loosening the mounting bolts and disconnecting the hoses. Replace it with a new radiator and secure it with the original bolts. Reconnect all hoses.
• Coolant Reservoir: If the reservoir is cracked, remove it by detaching it from its mounting points. Install a new reservoir and connect the hoses.
• Engine Block/Cylinder Head: If a gasket is leaking, this may require more intensive work. Remove the affected components, replace the gasket, and reassemble the engine, ensuring proper torque specifications are followed.

4. Refill Coolant

• After repairs, refill the cooling system with the appropriate coolant mixture (usually a 50/50 mix of antifreeze and distilled water).
• Start the engine and let it run until it reaches operating temperature, checking for leaks.

5. Final Checks

• Monitor the coolant level after the engine has cooled and top off if necessary.
• Dispose of any old coolant properly, as it is toxic.