why is my Volkswagen Tiguan Second Generation (2018-present) making a knocking sound?

Volkswagen Tiguan 2nd Gen (2018-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

535 words

Problem Statement

Learn how to diagnose and fix knocking sounds in Volkswagen Tiguan (2018-present). 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 performing any inspection or repairs.

Symptoms

•Knocking sound when driving, especially during acceleration or deceleration
•Increased vibration felt through the steering wheel or chassis
•Unusual noise when turning the steering wheel
•Possible loss of power during acceleration
•Check engine light may illuminate intermittently

Diagnostic Steps

1
Inspect for any visible signs of damage or wear on suspension components.
2
Check the engine mounts for signs of wear or failure.
3
Scan the vehicle’s OBD-II system for any error codes that may indicate mechanical issues.
4
Perform a road test to determine at what speeds and conditions the knocking sound occurs.
5
Examine the drivetrain components, including the CV joints and axles, for any signs of wear or damage.
6
Inspect the exhaust system to ensure it is not loose or hitting other components.

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
•Jack stands
•Pry bar

Parts Required

•Engine mounts (if necessary)
•Suspension bushings or struts (if damaged)
•CV joint or boot (if necessary)

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Diagnostic Steps

1
Inspect for any visible signs of damage or wear on suspension components.
2
Check the engine mounts for signs of wear or failure.
3
Scan the vehicle’s OBD-II system for any error codes that may indicate mechanical issues.
4
Perform a road test to determine at what speeds and conditions the knocking sound occurs.
5
Examine the drivetrain components, including the CV joints and axles, for any signs of wear or damage.
6
Inspect the exhaust system to ensure it is not loose or hitting other components.

Solution

1. Preparation

Gather tools: socket set, torque wrench, jack stands, and a pry bar.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent any electrical issues during repairs.

2. Inspect and Replace Engine Mounts

Sub-steps:
- Raise the vehicle using a jack and secure it with jack stands.
- Locate the engine mounts (usually on the front and rear of the engine).
- Use a pry bar to test the mounts for excessive movement.
- If damaged, remove the bolts securing the mount to the engine and the chassis.
- Install the new engine mount and torque to the manufacturer specifications (typically around 25-35 Nm, but refer to the service manual for specifics).

3. Inspect and Repair Suspension Components

Sub-steps:
- Check the condition of the struts, shocks, and bushings.
- If any component is worn or damaged, remove it using the socket set.
- Replace with new parts, ensuring to torque them to manufacturer specifications.
- Reassemble any components removed during inspection.

4. Examine Drivetrain Components

Sub-steps:
- Inspect the CV joints for any signs of wear or damage.
- Remove any damaged CV boot clamps and the boot itself if necessary.
- Replace the CV joint if damaged, ensuring to apply proper lubrication.
- Reinstall the CV boot and secure it with new clamps.

Tools Required:

Socket set
Torque wrench
Jack and jack stands
Pry bar

Parts Required:

Engine mounts (if necessary)
Suspension bushings or struts (if damaged)
CV joint or boot (if necessary)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Allow the engine to cool before performing any inspection or repairs.