why is my Volkswagen Golf MK7 (2015-2019) making a clicking noise when I try to start it?

Volkswagen Golf MK8.5 (2024-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

529 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix a clicking noise when starting your Volkswagen Golf MK7 (2015-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

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 inspecting components in the engine bay.

Symptoms

•Clicking noise from the engine bay when the ignition is turned on
•No engine turnover or cranking
•Dashboard lights may dim when attempting to start
•Possible electrical accessories not functioning correctly
•Check engine light may illuminate intermittently

Diagnostic Steps

1
Inspect the battery terminals for corrosion and ensure they are tight.
2
Use a multimeter to check the battery voltage; it should read around 12.6 volts when fully charged.
3
Attempt to jump-start the vehicle using jumper cables.
4
Check the starter motor connections and wiring for any damage or looseness.
5
Test the starter relay and fuses for continuity using a multimeter.
6
Inspect the ignition switch for proper function if all previous checks are satisfactory.

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

•Wire brush
•Baking soda
•Replacement battery (if needed)
•Socket set
•Torque wrench
•Fuse puller or needle-nose pliers
•Multimeter

Parts Required

•New battery (if needed)
•Starter motor (if needed)
•Starter relay (if needed)

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Diagnostic Steps

1
Inspect the battery terminals for corrosion and ensure they are tight.
2
Use a multimeter to check the battery voltage; it should read around 12.6 volts when fully charged.
3
Attempt to jump-start the vehicle using jumper cables.
4
Check the starter motor connections and wiring for any damage or looseness.
5
Test the starter relay and fuses for continuity using a multimeter.
6
Inspect the ignition switch for proper function if all previous checks are satisfactory.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is in a safe, well-ventilated area.

2. Battery Inspection and Replacement

Sub-steps:
1. Disconnect the negative (-) terminal from the battery.
2. Clean any corrosion from the terminals using a wire brush and a mixture of baking soda and water.
3. Reconnect the terminals securely.
4. If the battery voltage is below 12.4 volts, replace the battery with a new one (ensure it meets OEM specifications).

Tools Required:

Wire brush
Baking soda
Replacement battery (if needed)

3. Starter Motor Inspection and Replacement

Sub-steps:
1. Disconnect the negative (-) battery terminal.
2. Remove any necessary covers to access the starter motor.
3. Inspect the wiring and connections to the starter for any damage or loose connections.
4. If the starter motor is faulty, remove the mounting bolts and disconnect the wiring.
5. Install the new starter motor, ensuring all connections are tight and secure.
6. Reconnect the negative (-) battery terminal.

Tools Required:

Socket set
Torque wrench

4. Relay and Fuse Inspection

Sub-steps:
1. Locate the fuse box and remove the cover.
2. Check the starter relay and replace if defective.
3. Inspect the fuses related to the starting system and replace any blown fuses.

Tools Required:

Fuse puller or needle-nose pliers