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how to check the coolant level in my Toyota Highlander Third Generation (2014-2019)? - Toyota Highlander
Home/Cars/Toyota/Highlander/Third Generation (2014-2019)/how to check the coolant level in my Toyota Highlander Third Generation (2014-2019)?

how to check the coolant level in my Toyota Highlander Third Generation (2014-2019)?

Toyota Highlander Third Generation (2014-2019)

Error Codes
15-30 minutes
Time
easy
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
407 words

Problem Statement

Learn how to check the coolant level in your Toyota Highlander (2014-2019). Step-by-step guide to prevent overheating and ensure engine performance.

Affected Component
Cooling System
Estimated Time
15-30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Always check the coolant level when the engine is cool to avoid burns or injuries.

Symptoms

  • •Engine overheating
  • •Warning light on the dashboard
  • •Coolant leaks under the vehicle
  • •Poor heating performance from the cabin heater
  • •Steam emanating from the engine bay

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Solution

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •Flashlight

Parts Required

  • •Toyota Long Life Coolant

Additional Information

Affected Component
Cooling System
Estimated Time
15-30 minutes
Difficulty
easy
Severity
medium
Tools Required
1 item
Parts Required
1 item

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Solution
1. Preparation
  • Gather necessary tools: flashlight (if needed).
  • Ensure the engine is completely cool to prevent injury.
2. Inspect Coolant Reservoir
  • Locate the coolant reservoir on the driver's side of the engine compartment.
  • Check for the MIN and MAX level indicators on the side of the reservoir.
  • If the coolant level is below the MIN mark, proceed to the next step.
3. Add Coolant
  • If necessary, remove the reservoir cap by turning it counterclockwise.
  • Use the correct type of coolant as specified in the owner’s manual (usually a 50/50 mix of Toyota Long Life Coolant and distilled water).
  • Slowly add coolant until it reaches the MAX mark, avoiding overfilling.
  • Replace the reservoir cap securely.
4. Check for Leaks
  • After adding coolant, inspect hoses and connections for leaks.
  • Look for any signs of coolant pooling under the vehicle.