why is my Toyota Highlander Third Generation (2014-2019) making a clunking noise when I shift

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

504 words

Problem Statement

Learn how to diagnose and fix clunking noise when shifting in Toyota Highlander (2014-2019). Step-by-step guide with diagnostic procedures 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 vehicle to cool before inspecting the transmission.

Symptoms

•Clunking noise during gear shifts
•Difficulty engaging gears
•Transmission slipping or hesitation
•Vibration felt through the vehicle during shifting
•Warning lights illuminated on the dashboard

Diagnostic Steps

1
Inspect the transmission fluid level and condition using the dipstick.
2
Scan the vehicle's onboard diagnostic system for any stored error codes.
3
Check for any visible damage or wear on the mounts and linkage of the transmission.
4
Test drive the vehicle while listening for noise and noting when it occurs.
5
Inspect the driveshaft and CV joints for play or damage.
6
Examine the suspension components for wear that could contribute to noise during shifting.

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

•Socket set
•Torque wrench
•OBD-II scanner
•Transmission fluid dipstick

Parts Required

•Transmission fluid
•Transmission mounts
•Driveshaft or CV joints (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the transmission fluid level and condition using the dipstick.
2
Scan the vehicle's onboard diagnostic system for any stored error codes.
3
Check for any visible damage or wear on the mounts and linkage of the transmission.
4
Test drive the vehicle while listening for noise and noting when it occurs.
5
Inspect the driveshaft and CV joints for play or damage.
6
Examine the suspension components for wear that could contribute to noise during shifting.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is turned off.
Disconnect the negative battery terminal for safety.

Tools Required:

Socket set
Torque wrench
OBD-II scanner
Transmission fluid dipstick

2. Check and Replace Transmission Fluid

Remove the transmission dipstick and check fluid level.
If low, add the appropriate type of transmission fluid as specified in the owner’s manual.
If fluid is dark or burnt, drain the old fluid and replace it with new fluid.
Start the engine and let it idle; shift through all gears to circulate fluid.
Recheck fluid levels and top off as necessary.

3. Inspect and Replace Transmission Mounts

Using a socket set, remove the bolts securing the transmission mounts.
Carefully lift the transmission slightly with a jack to relieve pressure on the mounts.
Remove the old mounts and replace with new ones, ensuring proper alignment.
Torque the bolts to the manufacturer’s specifications.
Recheck the transmission alignment and adjust if necessary.

4. Inspect Driveshaft and CV Joints

Raise the vehicle securely using jack stands.
Visually inspect the driveshaft and CV joints for any signs of damage or excessive play.
If any components are damaged, replace them with new parts.
Reinstall the driveshaft and torque all connections to manufacturer specifications.