why does my Toyota RAV4 XA40 (2013-2018) keep losing coolant

Solution

1. Preparation

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

Tools Required:

• OBD-II scanner
• Pressure tester
• Socket set
• Torque wrench
• Coolant tester
• Multimeter

2. Locate and Repair Leaks

• Identify Leak Source: Use a pressure tester to pressurize the cooling system. Look for any visible leaks.
• Hose Replacement: If a hose is damaged, remove the clamps, disconnect the hose, and install a new one. Ensure proper fit and secure clamps tightly.

3. Replace Failed Components

• Water Pump Replacement (if applicable):
  • Remove the belt driving the water pump.
  • Unbolt and remove the old water pump.
  • Clean the mounting surface on the engine.
  • Install the new water pump, ensuring the gasket is properly seated and torque bolts to manufacturer's specifications.

4. Flush and Refill Cooling System

• Flush System: Use a coolant flush solution as per manufacturer instructions to clean the cooling system.
• Refill: Fill the system with the recommended type of coolant, ensuring the proper mix of water and coolant as specified in the owner’s manual.

5. Final Check

• After repairs, run the engine and monitor for leaks.
• Check the coolant level after the engine has reached operating temperature and top off if necessary.