why does my Volkswagen Golf MK7 (2015-2019) make a clicking noise when trying to start?

Volkswagen Golf MK8.5 (2024-Present)

Error Codes

1-3 hours

Time

medium

Difficulty

high

Severity

3 min read

563 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 the 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

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Ensure the vehicle is securely raised if working underneath.

Symptoms

•Clicking noise heard when turning the key or pressing the start button
•Engine does not crank or start
•Dashboard lights may dim when starting attempt is made
•Possible battery warning light illuminated
•Intermittent electrical accessories malfunction

Diagnostic Steps

1
Check the battery voltage using a multimeter; it should read around 12.6 volts for a healthy battery.
2
Inspect battery terminals for corrosion or loose connections; clean and tighten as necessary.
3
Test the starter motor by attempting to bypass it; use a jumper wire to connect the positive terminal directly to the starter.
4
Scan for any fault codes using an OBD-II scanner to identify potential electrical issues.
5
Inspect fuses related to the starting system and replace any that are blown.
6
Verify the condition of the ignition switch and wiring for any signs of damage or malfunction.

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
•Multimeter
•Socket set
•Jumper cables
•Wire brush

Parts Required

•Replacement battery (if necessary)
•Replacement starter motor (if necessary)

Related Faults

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Diagnostic Steps

1
Check the battery voltage using a multimeter; it should read around 12.6 volts for a healthy battery.
2
Inspect battery terminals for corrosion or loose connections; clean and tighten as necessary.
3
Test the starter motor by attempting to bypass it; use a jumper wire to connect the positive terminal directly to the starter.
4
Scan for any fault codes using an OBD-II scanner to identify potential electrical issues.
5
Inspect fuses related to the starting system and replace any that are blown.
6
Verify the condition of the ignition switch and wiring for any signs of damage or malfunction.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, socket set, jumper cables, and cleaning supplies.
Ensure the vehicle is in park or neutral and the ignition is off.
Disconnect the negative battery cable to prevent electrical shock.

2. Battery Maintenance

Inspect the Battery:
- Remove the battery terminals (negative first, then positive).
- Clean the terminals with a wire brush and a mixture of baking soda and water to remove corrosion.
- Tighten the terminals securely before reconnecting.
Test the Battery:
- Reconnect the battery terminals (positive first, then negative).
- Measure the voltage again; if it is below 12.4 volts, consider recharging or replacing the battery.

3. Starter Motor Inspection

Access the Starter:
- Raise the vehicle using a jack and secure it with jack stands.
- Locate the starter motor, usually found near the transmission.
Test the Starter:
- Use jumper cables to connect the positive terminal of the battery directly to the starter's positive terminal while the negative cable remains grounded.
- If the starter engages and the engine cranks, the starter may be faulty.

4. Replace the Starter (if necessary)

Remove the Old Starter:
- Disconnect any wiring harnesses attached to the starter.
- Remove the mounting bolts using a socket set and take out the starter.
Install New Starter:
- Position the new starter in place and secure it with the mounting bolts (torque to manufacturer specifications).
- Reconnect the wiring harnesses.