why is my Toyota RAV4 leaking coolant under the car

Solution

1. Preparation

• Ensure the engine is cool and disconnect the battery.
• Gather all necessary tools and parts for the repair.
• Place a drain pan under the vehicle to catch any leaking coolant.

2. Replace Damaged Hoses

• Sub-steps:
  1. Identify the damaged hose(s) by following the coolant flow path.
  2. Loosen and remove the clamps securing the damaged hose.
  3. Remove the hose and inspect the connection points for any debris.
  4. Install the new hose, ensuring it fits securely.
  5. Tighten the clamps to manufacturer specifications (usually 15-20 inch-pounds).

3. Repair or Replace Radiator

• Sub-steps:
  1. If leaks are found in the radiator, remove the upper and lower hoses connected to it.
  2. Disconnect any electrical connectors and mounting brackets securing the radiator.
  3. Carefully remove the radiator from the vehicle.
  4. If repairing, use a radiator repair epoxy as per instructions; if replacing, install the new radiator in reverse order of removal.
  5. Reconnect hoses, ensuring tight seals.

4. Inspect and Replace Water Pump (if necessary)

• Sub-steps:
  1. Remove the serpentine belt to access the water pump.
  2. Remove the bolts securing the water pump and disconnect it from the engine.
  3. Clean the mounting surface on the engine block.
  4. Install the new water pump with a new gasket, ensuring it is torqued to specifications.
  5. Reattach the serpentine belt.

5. Refill Cooling System

• Sub-steps:
  1. Fill the radiator with a 50/50 mix of coolant and water.
  2. Fill the coolant reservoir to the appropriate level.
  3. Start the engine and let it run until it reaches operating temperature, checking for leaks.
  4. Top off the coolant level if necessary.