why does my Toyota Highlander smell like antifreeze

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the engine is cool to avoid burns.
• Disconnect the negative battery terminal for safety.

2. Locate and Identify Leak

• Tools Required: UV light, coolant dye kit, safety goggles, gloves.
• Add UV dye to the coolant system if leaks are not visible.
• Run the engine for a brief period and check with a UV light to locate any leaks.

3. Repair or Replace Damaged Components

• Tools Required: Socket set, torque wrench, screwdrivers.

• If a leaking hose is identified:

  1. Loosen hose clamps and remove the damaged hose.
  2. Install the new hose, ensuring proper alignment.
  3. Tighten clamps to specified torque (usually 20-30 in-lbs).

• If the radiator is leaking:

  1. Remove the front grille to access the radiator.
  2. Drain coolant from the radiator using the drain valve.
  3. Disconnect the upper and lower radiator hoses and any attached wiring.
  4. Remove mounting bolts and replace the radiator with a new one.
  5. Reconnect hoses and wiring, then refill with coolant.

4. Check and Replace Radiator Cap (if necessary)

• Tools Required: None specifically; just the replacement cap.
• Remove the old radiator cap and replace it with a new one if it shows signs of wear or damage.

5. Refill Coolant System

• Tools Required: Funnel, coolant.
• Refill the radiator and reservoir with the appropriate type of coolant (usually a 50/50 mix of antifreeze and distilled water).
• Bleed the cooling system to remove air pockets.