my Volkswagen Golf MK7 (2015-2019) is leaking coolant, what should I do?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the engine is cool before starting work.
• Disconnect the battery to avoid electrical issues.

2. Inspect and Replace Hoses

• Tools Required: Hose clamp pliers, socket set, screwdriver.
• Check all hoses connected to the cooling system. Look for any cracks or bulges.
• If damaged hoses are found, use hose clamp pliers to remove the old hose.
• Install the new hose and secure it with clamps, ensuring a tight fit.

3. Replace the Coolant Reservoir

• Tools Required: Socket set, torque wrench.
• Remove any components obstructing access to the coolant reservoir.
• Disconnect the hoses from the reservoir and remove any fasteners.
• Install the new reservoir, ensuring all fittings are secure.
• Reconnect hoses and ensure there are no leaks.

4. Inspect and Replace the Water Pump (if necessary)

• Tools Required: Socket set, torque wrench, gasket scraper.
• Drain the coolant from the system.
• Remove the serpentine belt to access the water pump.
• Disconnect the water pump and remove it from the engine.
• Clean the mounting surface and install the new water pump with a new gasket.
• Reattach the serpentine belt and refill the coolant system.

5. Refill Coolant System

• Use the manufacturer-recommended coolant type.
• Fill the coolant reservoir to the appropriate level.
• Bleed the cooling system to remove air pockets by running the engine with the radiator cap off until coolant flows without bubbles.