how to fix my Toyota Highlander Third Generation (2014-2019) that won’t go into gear

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

513 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 issues 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.
•Allow the engine to cool before inspecting or servicing the transmission.

Symptoms

•Transmission warning light illuminated on the dashboard
•Unresponsive gear shift lever
•Engine revs without acceleration
•Grinding or clunking noise when attempting to shift
•Fluid leakage under the vehicle
•Poor acceleration or delayed engagement

Diagnostic Steps

1
Check the transmission fluid level and condition using the dipstick.
2
Scan the vehicle’s computer for any error codes using an OBD-II scanner.
3
Inspect the transmission linkage for any visible damage or disconnection.
4
Examine the condition of the transmission fluid for contamination or burning smell.
5
Test the brake pedal switch operation, as it can affect the shift interlock system.
6
Verify the battery voltage to ensure the electrical system is functioning properly.

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
•Multimeter
•Funnel
•Clean rag

Parts Required

•Transmission fluid (specific type according to the owner's manual)
•Brake pedal switch (if defective)
•Transmission linkage (if damaged)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the transmission fluid level and condition using the dipstick.
2
Scan the vehicle’s computer for any error codes using an OBD-II scanner.
3
Inspect the transmission linkage for any visible damage or disconnection.
4
Examine the condition of the transmission fluid for contamination or burning smell.
5
Test the brake pedal switch operation, as it can affect the shift interlock system.
6
Verify the battery voltage to ensure the electrical system is functioning properly.

Solution

1. Preparation

Gather tools and parts required.
Ensure the vehicle is parked on a level surface.
Disconnect the negative battery terminal for safety.

2. Check and Top Off Transmission Fluid

Tools Required: Funnel, clean rag.
Inspect the transmission dipstick; if low, add the correct type of transmission fluid (check owner's manual).
Wipe the dipstick clean, reinsert, and check the level again to ensure proper fluid level.

3. Repair or Replace the Transmission Linkage

Tools Required: Socket set, pliers, torque wrench.
Remove any covers obstructing access to the transmission linkage.
Inspect for bent or broken components; if damaged, replace the linkage or adjust as necessary.
Reattach all components and torque to specifications.

4. Test the Brake Pedal Switch

Tools Required: Multimeter.
Locate the brake pedal switch and test its operation using the multimeter.
If defective, replace the brake pedal switch with a new one and ensure proper adjustment.

5. Inspect and Replace the Transmission Control Module (if necessary)

Tools Required: OBD-II scanner, socket set.
If error codes indicate a faulty Transmission Control Module (TCM), remove the TCM following the service manual instructions.
Replace with a new module, clear error codes with the OBD-II scanner, and reconnect the battery.