my Toyota Camry Eighth Generation (2018-present) makes a knocking noise while driving, what's wrong

Toyota Camry Eighth Generation (2018-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

517 words

Problem Statement

Learn how to diagnose and fix knocking noise in Toyota Camry. 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 engine to cool before opening any components.

Symptoms

•Knocking noise during acceleration or deceleration
•Noise increases with vehicle speed
•Vibrations felt through the steering wheel or floor
•Loose or unstable steering response
•Possible check engine light illumination

Diagnostic Steps

1
Inspect the vehicle's suspension components for wear or damage, including struts, shock absorbers, and control arm bushings.
2
Check for loose exhaust components that may cause knocking sounds when the vehicle is in motion.
3
Raise the vehicle and perform a wheel shake test to check for play in the wheel bearings and steering components.
4
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) that may indicate engine or transmission issues.
5
Inspect the drivetrain components, including CV joints and driveshafts, for signs of wear or damage.

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
•Jack and jack stands

Parts Required

•Struts or shock absorbers
•CV joint
•Exhaust hangers

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Diagnostic Steps

1
Inspect the vehicle's suspension components for wear or damage, including struts, shock absorbers, and control arm bushings.
2
Check for loose exhaust components that may cause knocking sounds when the vehicle is in motion.
3
Raise the vehicle and perform a wheel shake test to check for play in the wheel bearings and steering components.
4
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) that may indicate engine or transmission issues.
5
Inspect the drivetrain components, including CV joints and driveshafts, for signs of wear or damage.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a flat, stable surface and the engine is off.
Disconnect the battery to ensure safety during repairs.

2. Inspect and Replace Suspension Components

Inspect: Examine struts, shock absorbers, and control arm bushings for cracks or excessive wear.
Replace (if necessary):
- Remove the wheel using a socket set.
- Unbolt the strut assembly from the top mount and lower control arm.
- Replace with new struts/shock absorbers as needed, ensuring proper torque specifications are followed (typically around 30-50 ft-lbs).
- Reinstall the wheel and lower the vehicle.

3. Check and Repair Drivetrain Components

Inspect: Examine CV joints and driveshafts for cracks or tears.
Replace (if necessary):
- Remove the wheel and brake assembly to access the CV joint.
- Unfasten the CV joint from the wheel hub and transmission.
- Replace with a new CV joint, securing it with proper torque specifications.
- Reassemble the brake and wheel components.

4. Tighten or Replace Loose Exhaust Components

Inspect: Look for loose bolts or hangers on the exhaust system.
Tighten/Replace (if necessary):
- Use a socket set to tighten any loose bolts.
- If hangers are damaged, replace them with new ones to secure the exhaust system.