why does my Toyota Camry XV70 (2018-2024) make a knocking noise

Toyota Camry XV80 (2025-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

525 words

Problem Statement

Learn how to diagnose and fix knocking noise issues in the 2018-2024 Toyota Camry XV70. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical systems.
•Ensure the vehicle is securely supported on jack stands before working underneath.

Symptoms

•Knocking noise when driving over bumps or uneven surfaces
•Noise occurs during acceleration or deceleration
•Vibration felt in the steering wheel or floorboard
•Unusual wear on tires
•Check engine light may be illuminated

Diagnostic Steps

1
Inspect the suspension components for looseness or damage.
2
Check the engine mounts for signs of wear or failure.
3
Use an OBD-II scanner to check for any error codes related to the engine or transmission.
4
Examine the drive shafts and CV joints for damage or wear.
5
Listen for the noise while stationary, having a helper rev the engine to determine if it is engine-related.

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
•Socket set
•Torque wrench
•OBD-II scanner

Parts Required

•Replacement suspension components (if damaged)
•Engine or transmission mounts (if worn)
•CV joints (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the suspension components for looseness or damage.
2
Check the engine mounts for signs of wear or failure.
3
Use an OBD-II scanner to check for any error codes related to the engine or transmission.
4
Examine the drive shafts and CV joints for damage or wear.
5
Listen for the noise while stationary, having a helper rev the engine to determine if it is engine-related.

Solution

1. Preparation

Tools Required: Jack and jack stands, socket set, torque wrench, OBD-II scanner
Ensure the vehicle is on a flat surface and engage the parking brake.
Disconnect the battery to prevent any electrical shorts.

2. Inspect Suspension Components

Sub-steps:
1. Use a jack to lift the front and rear of the car, placing it securely on jack stands.
2. Visually inspect all suspension components (control arms, struts, bushings) for any signs of wear or damage.
3. Wiggle the components by hand to check for play.

3. Check Engine and Transmission Mounts

Sub-steps:
1. Locate the engine and transmission mounts.
2. Inspect for cracks, tears, or deterioration in the rubber of the mounts.
3. Use a torque wrench to ensure mounting bolts are tightened to manufacturer specifications (typically around 30-50 ft-lbs, verify with service manual).

4. Examine Drive Shafts and CV Joints

Sub-steps:
1. Inspect the drive shafts for any visible damage or looseness.
2. Check the CV joints for grease leaks or boot tears.
3. Replace any damaged components as necessary.

5. Address Engine Issues (if applicable)

Sub-steps:
1. If OBD-II codes indicate an engine problem, refer to the code description to diagnose the issue (e.g., misfire, knocking).
2. Check for loose or damaged components in the engine bay, such as belts or pulleys.
3. Conduct a compression test to ensure engine health.