why does my Toyota Camry XV70 (2018-2024) have a knocking noise when accelerating

Toyota Camry XV80 (2025-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

492 words

Problem Statement

Discover the causes and solutions for knocking noise during acceleration in Toyota Camry XV70. Step-by-step diagnostic and repair guide included.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Knocking noise noticeable during acceleration
•Vibration felt through the steering wheel or seat
•Decreased engine performance or power loss
•Unusual sounds when shifting gears (if automatic)
•Check engine light may be illuminated (if applicable)

Diagnostic Steps

1
Inspect the engine mounts for wear or damage.
2
Check the transmission fluid level and condition.
3
Scan for error codes using an OBD-II scanner.
4
Perform a visual inspection of the suspension components.
5
Listen for the source of the knocking noise using a mechanic's stethoscope.
6
Test drive the vehicle to replicate the noise and note the conditions under which it occurs.

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
•Mechanic's stethoscope
•Jack and jack stands

Parts Required

•Engine mounts (if needed)
•Transmission fluid (specific type for the Camry)
•Suspension components (if needed)

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Diagnostic Steps

1
Inspect the engine mounts for wear or damage.
2
Check the transmission fluid level and condition.
3
Scan for error codes using an OBD-II scanner.
4
Perform a visual inspection of the suspension components.
5
Listen for the source of the knocking noise using a mechanic's stethoscope.
6
Test drive the vehicle to replicate the noise and note the conditions under which it occurs.

Solution

1. Preparation

Tools Required: Socket set, torque wrench, OBD-II scanner, mechanic's stethoscope, jack and jack stands.
Ensure the vehicle is parked on a level surface and the engine is cool. Disconnect the battery to avoid electrical shorts.

2. Inspect Engine and Transmission Mounts

Sub-steps:
1. Use a jack to support the engine slightly and relieve pressure from the mounts.
2. Inspect each engine and transmission mount for cracks, tears, or excessive wear.
3. If damaged, remove the bolts securing the mounts and replace them with new components. Torque the bolts to the manufacturer’s specifications.

3. Check and Change Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it.
2. Check the fluid level and condition; it should be reddish and not burnt.
3. If fluid is low, add the recommended type of transmission fluid. If dirty, drain the old fluid and replace it with fresh fluid, using a pump if necessary.
4. Recheck the fluid level after driving for a few minutes.

4. Inspect Suspension Components

Sub-steps:
1. Raise the vehicle using a jack and secure it with jack stands.
2. Visually inspect the control arms, bushings, and struts for signs of wear or damage.
3. Replace any worn or damaged components as needed, ensuring proper alignment afterward.