what should I do if my Toyota Highlander Third Generation (2014-2019) shakes when I accelerate

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

591 words

Problem Statement

Learn how to diagnose and fix shaking during acceleration in Toyota Highlander 2014-2019. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Suspension

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 working on the engine or exhaust components.

Symptoms

•Vehicle shakes or vibrates when accelerating
•Steering wheel may shake or feel unsteady
•Possible noise from the drivetrain or suspension
•Vibration intensity may increase with higher speeds
•Poor handling or response during acceleration

Diagnostic Steps

1
Inspect tire condition and pressure to ensure they are properly inflated and not damaged.
2
Check wheel alignment and balance; look for uneven tire wear patterns.
3
Scan for any error codes using an OBD-II scanner to identify potential electronic issues.
4
Inspect the driveshaft and axles for damage or play.
5
Check engine and transmission mounts for signs of wear or breakage.
6
Examine the suspension components for wear or damage, especially control arms and bushings.

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

•Jack and jack stands
•Lug wrench
•OBD-II scanner
•Torque wrench

Parts Required

•Replacement tires (if damaged)
•Driveshaft (if damaged)
•Engine and transmission mounts (if worn)
•Suspension components (if needed)

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Diagnostic Steps

1
Inspect tire condition and pressure to ensure they are properly inflated and not damaged.
2
Check wheel alignment and balance; look for uneven tire wear patterns.
3
Scan for any error codes using an OBD-II scanner to identify potential electronic issues.
4
Inspect the driveshaft and axles for damage or play.
5
Check engine and transmission mounts for signs of wear or breakage.
6
Examine the suspension components for wear or damage, especially control arms and bushings.

Solution

1. Preparation

Tools Required: Jack and jack stands, lug wrench, OBD-II scanner, torque wrench.
Ensure the vehicle is parked on a level surface and the engine is turned off.
Disconnect the battery to ensure safety during repairs.

2. Tire Inspection and Replacement

Sub-steps:
1. Loosen the lug nuts on the wheels using the lug wrench.
2. Lift the vehicle using the jack and secure it with jack stands.
3. Remove the wheels and inspect for uneven wear, bulges, or damage.
4. Check tire pressure using a tire gauge; inflate or replace tires as necessary.
5. Reinstall the wheels and tighten the lug nuts to the manufacturer's specified torque.

3. Wheel Alignment and Balancing

Sub-steps:
1. Take the vehicle to a certified alignment shop.
2. Ensure both front and rear wheel alignment are checked and adjusted to manufacturer specifications.
3. Balance the wheels if there are any vibrations felt at certain speeds.

4. Inspect and Replace Driveshaft/Axles

Sub-steps:
1. Inspect the driveshaft for any visible damage or excessive play.
2. If damaged, remove the driveshaft by unbolting it from the transmission and rear differential.
3. Replace with a new driveshaft, ensuring all bolts are torqued to specification.
4. Inspect the axles for any signs of wear; replace if necessary.

5. Check Engine and Transmission Mounts

Sub-steps:
1. Visually inspect the engine and transmission mounts for cracks or deterioration.
2. If damaged, replace mounts by unbolting them from the engine and chassis.
3. Install new mounts and torque to manufacturer specifications.

6. Suspension Component Inspection

Sub-steps:
1. Inspect all visible suspension components for wear, including control arms, bushings, and struts.
2. Replace any worn components as necessary, following proper disassembly and assembly procedures.
3. Ensure all bolts are torqued to the manufacturer's specified values.