my Toyota Highlander XU70 (2020-Present) has a burning smell what does it mean

Solution

1. Preparation

• Tools Required: Safety gloves, safety goggles, flashlight.
• Ensure the engine is cool before starting any work.
• Disconnect the battery to prevent any electrical shorts.

2. Inspect and Replace Engine Oil

• Sub-steps:
  1. Remove the oil dipstick and inspect the oil for a burnt smell or dark color.
  2. If oil is burnt, drain the old oil using an oil pan.
  3. Replace the oil filter with a new one.
  4. Refill the engine with the recommended oil type as per the owner's manual (typically 0W-20 for Toyota Highlander).
  5. Start the engine and check for leaks.

3. Coolant System Check

• Sub-steps:
  1. Inspect the radiator and hoses for leaks or cracks.
  2. If coolant is low or contaminated, flush the cooling system.
  3. Refill with the correct type of coolant (Toyota Long Life Coolant).
  4. Start the engine and monitor for leaks or overheating.

4. Electrical System Inspection

• Sub-steps:
  1. Inspect wiring harnesses for any burnt or melted sections.
  2. Replace damaged wiring as necessary.
  3. Tighten any loose connections and ensure proper grounding.

5. Brake System Evaluation

• Sub-steps:
  1. Inspect brake pads and rotors for excessive wear or overheating.
  2. Replace any worn components and ensure proper lubrication of caliper slides.
  3. Test brake operation to ensure no further issues are present.