why does my Toyota Camry Eighth Generation (2018-present) overheat while driving

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the engine is cool to avoid burns.
• Disconnect the negative battery terminal.

2. Replace Coolant

• Sub-steps:
  1. Locate the drain plug on the radiator and place a drain pan underneath.
  2. Open the drain plug and allow coolant to drain completely.
  3. Close the drain plug securely.
  4. Refill the radiator with the appropriate coolant mixture (Toyota Genuine Super Long Life Coolant recommended).
  5. Bleed the cooling system to remove air pockets by running the engine with the radiator cap off until the thermostat opens and coolant flows.

3. Thermostat Replacement

• Sub-steps:
  1. Remove the thermostat housing bolts using a socket wrench.
  2. Carefully lift the housing off and remove the old thermostat.
  3. Clean the mating surfaces on the engine and housing.
  4. Install the new thermostat with the correct orientation (spring side towards the engine).
  5. Reattach the thermostat housing and torque bolts to specifications (typically around 10-15 ft-lbs).

4. Water Pump Inspection/Replacement

• Sub-steps:
  1. Remove any components obstructing access to the water pump (timing belt or drive belt).
  2. Disconnect hoses attached to the water pump.
  3. Remove the water pump mounting bolts and take out the pump.
  4. Clean the mounting surface on the engine.
  5. Install the new water pump and torque bolts to manufacturer specifications (usually around 15-20 ft-lbs).

5. Radiator Fan Check

• Sub-steps:
  1. Start the engine and allow it to reach normal operating temperature.
  2. Observe the radiator fan operation; it should engage when the engine reaches a certain temperature.
  3. If the fan does not engage, check the fan relay and fuses, and replace if necessary.
  4. If the fan is faulty, disconnect it and replace it with a new one.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Coolant drain pan
• Screwdrivers
• Pliers

Parts Required:

• Coolant
• Thermostat
• Water pump (if faulty)
• Radiator fan (if faulty)

Estimated Repair Time: 3-5 hours

Safety Warnings:

• Allow engine to cool before working on the cooling system.
• Always wear safety glasses and gloves when handling coolant and working on the engine.