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how to fix the transmission slipping in my Toyota Highlander Third Generation (2014-2019) - Toyota Highlander
Home/Cars/Toyota/Highlander/Third Generation (2014-2019)/how to fix the transmission slipping in my Toyota Highlander Third Generation (2014-2019)

how to fix the transmission slipping in my Toyota Highlander Third Generation (2014-2019)

Toyota Highlander Third Generation (2014-2019)

Error Codes
2-4 hours
Time
medium
Difficulty
high
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
597 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix transmission slipping in Toyota Highlander (2014-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component
Transmission
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical systems to prevent shock.
  • •Allow the transmission to cool before starting work to avoid burns from hot fluid.

Symptoms

  • •Check engine light illuminated
  • •Engine revs without corresponding acceleration
  • •Delayed or harsh shifting
  • •Unusual noises during gear changes
  • •Fluid leaks under the vehicle
  • •Poor fuel economy

Diagnostic Steps

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

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

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

  • •OBD-II scanner
  • •Socket set
  • •Torque wrench
  • •Fluid pump
  • •Drain pan
  • •Multimeter
  • •Funnel

Parts Required

  • •Transmission fluid (specific to Toyota specifications)
  • •Transmission filter
  • •Gasket or sealant for the transmission pan
  • •Transmission solenoids (if replacement is necessary)

Additional Information

Affected Component
Transmission
Estimated Time
2-4 hours
Difficulty
medium
Severity
high
Tools Required
7 items
Parts Required
4 items

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Solution
1. Preparation
  • Gather tools and parts required for the repair.
  • Ensure the vehicle is parked on a level surface and the engine is off.
  • Disconnect the negative battery terminal to prevent electrical issues.
2. Change Transmission Fluid and Filter

Tools Required:

  • Socket set
  • Torque wrench
  • Fluid pump
  • Drain pan
  • Funnel

Sub-steps:

  1. Drain the Old Fluid:

    • Place a drain pan under the transmission pan.
    • Remove the transmission pan bolts with a socket set and carefully lower the pan to drain fluid.

  2. Remove and Replace the Filter:

    • Remove the old transmission filter by unclipping it from its position.
    • Install the new filter, ensuring it is securely attached.

  3. Clean the Pan:

    • Clean the transmission pan with a suitable solvent.
    • Ensure the magnet (if present) is cleaned of any debris.

  4. Reinstall the Pan:

    • Apply a new gasket or sealant as recommended by the manufacturer.
    • Reattach the transmission pan and torque the bolts to the manufacturer’s specifications.

  5. Refill Transmission Fluid:

    • Use a fluid pump to refill the transmission with the appropriate type of fluid (consult the owner’s manual for specifications).
    • Fill until the fluid level reaches the proper mark on the dipstick.
3. Inspect and Replace Solenoids (if necessary)

Tools Required:

  • Multimeter
  • Socket set

Sub-steps:

  1. Access Solenoids:

    • Remove the transmission pan and filter (as in step 2).

  2. Test Solenoids:

    • Use a multimeter to check resistance in the solenoids. Compare results to manufacturer specifications.

  3. Replace Faulty Solenoids:

    • Disconnect the wiring harness and unbolt the solenoids.
    • Install new solenoids and reconnect the harness.