why is my Volkswagen Golf MK6 (2009-2014) making a clicking noise when I turn the key

Volkswagen Golf MK7 (2015-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

high

Severity

3 min read

548 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 turning the key in Volkswagen Golf MK6. 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 battery before working on electrical systems.
•Allow engine components to cool before inspection or repair.

Symptoms

•Clicking sound when turning the ignition key
•No engine cranking or starting
•Dashboard lights dimming or flickering
•Possible battery warning light illuminated
•Electrical accessories functioning intermittently or not at all

Diagnostic Steps

1
Inspect the battery terminals for corrosion or loose connections.
2
Test the battery voltage using a multimeter; it should read around 12.6 volts when fully charged.
3
Check for voltage drop across the battery cables when the key is turned to the start position.
4
Inspect the starter motor and its connections for any visible damage or loose wires.
5
Scan for any fault codes using an OBD-II scanner that may indicate issues with the starting system.
6
Test the starter relay by swapping it with a known good relay if available.

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
•Wire brush
•Torque wrench

Parts Required

•Replacement battery
•Replacement starter motor

Related Faults

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Diagnostic Steps

1
Inspect the battery terminals for corrosion or loose connections.
2
Test the battery voltage using a multimeter; it should read around 12.6 volts when fully charged.
3
Check for voltage drop across the battery cables when the key is turned to the start position.
4
Inspect the starter motor and its connections for any visible damage or loose wires.
5
Scan for any fault codes using an OBD-II scanner that may indicate issues with the starting system.
6
Test the starter relay by swapping it with a known good relay if available.

Solution

1. Preparation

Gather necessary tools (see Tools Required below).
Ensure the vehicle is in park (automatic) or neutral (manual) with the parking brake engaged.
Disconnect the negative terminal of the battery to avoid electrical shorts.

2. Battery Inspection

Remove the battery terminals (negative first, then positive).
Clean any corrosion from the terminals and battery posts using a wire brush.
Reconnect the terminals securely, starting with the positive terminal.

3. Battery Replacement (if necessary)

If the battery voltage is below 12.4 volts, replace the battery.
- Use a socket set to remove the battery hold-down bracket.
- Lift the old battery out carefully.
- Place the new battery in the tray and secure it with the hold-down bracket.
- Reconnect the terminals (positive first, then negative).

4. Starter Motor Inspection

If the battery is good, locate the starter motor (usually positioned near the transmission).
Disconnect the electrical connector and the positive cable from the starter.
Inspect for signs of wear or damage, such as frayed wires or burnt connections.

5. Starter Motor Replacement (if necessary)

If the starter is faulty, remove it by unscrewing the mounting bolts using a socket set.
Install the new starter motor by reversing the removal procedure.
Torque the mounting bolts to manufacturer specifications (usually around 15-20 ft-lbs).
Reconnect the positive cable and electrical connector.

6. Final Steps

Reconnect the negative battery terminal.
Ensure all connections are secure.
Start the vehicle to confirm repairs.