why does my Volkswagen Tiguan Second Generation (2018-present) make a knocking noise when I accelera...

Volkswagen Tiguan 2nd Gen (2018-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

501 words

Problem Statement

Learn how to diagnose and fix knocking noise during acceleration in Volkswagen Tiguan (2018-present). Step-by-step guide with symptoms and solutions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the engine to cool before performing any inspections.

Symptoms

•Knocking sound during acceleration
•Vibrations felt through the steering wheel or floor
•Loss of power upon acceleration
•Possible check engine light illuminated
•Increased fuel consumption

Diagnostic Steps

1
Scan the vehicle’s OBD-II system for error codes using an OBD-II scanner.
2
Visually inspect the engine and transmission mounts for signs of wear or damage.
3
Check the condition of the engine oil and transmission fluid levels.
4
Inspect the exhaust system for any loose components or damage.
5
Test drive the vehicle to replicate the noise and determine if it is speed or RPM-dependent.
6
Examine the CV joints and axles for any play 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
•Screwdrivers

Parts Required

•Engine mounts (if damaged)
•CV joints or axles (if worn)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan the vehicle’s OBD-II system for error codes using an OBD-II scanner.
2
Visually inspect the engine and transmission mounts for signs of wear or damage.
3
Check the condition of the engine oil and transmission fluid levels.
4
Inspect the exhaust system for any loose components or damage.
5
Test drive the vehicle to replicate the noise and determine if it is speed or RPM-dependent.
6
Examine the CV joints and axles for any play or damage.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle battery to ensure safety during repairs.

2. Inspect and Replace Engine or Transmission Mounts

Lift the Vehicle: Use a jack to lift the vehicle and secure it with jack stands.
Remove Underbody Covers: If applicable, remove any underbody covers for access.
Inspect Mounts: Visually inspect the engine and transmission mounts for cracks or deterioration.
Replace Damaged Mounts:
- If mounts are damaged:
  1. Remove the bolts securing the mount to the engine and frame.
  2. Install the new mount and torque bolts to factory specifications (usually around 30-40 Nm).
  3. Repeat for each damaged mount.

3. Check and Replace CV Joints or Axles

Visual Inspection: Check CV joints for torn boots or grease leakage.
Remove Wheel: Remove the wheel for better access to the axles.
Remove Axle Nut: Use a socket wrench to remove the axle nut.
Inspect and Replace:
- If any play is detected:
  1. Remove the axle by disconnecting it from the hub and transmission.
  2. Install the new axle and torque the nut to factory specifications (typically 200 Nm).
  3. Reinstall the wheel.

4. Final Checks

Reconnect the battery.
Start the engine and ensure no abnormal sounds are present.
Test drive the vehicle to confirm repair success.