my Volkswagen Golf MK7 (2015-2019) won't start and just clicks, what to do?

Volkswagen Golf MK8.5 (2024-Present)

Error Codes

1-2 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 no-start condition in Volkswagen Golf MK7 (2015-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Ensure the vehicle is in park or neutral with the parking brake engaged before starting repairs.

Symptoms

•Clicking sound when turning the key or pressing the start button
•Dashboard lights dimming during the starting attempt
•No engine cranking or turnover
•Possible battery warning light illuminated
•Electrical accessories functioning intermittently or not at all

Diagnostic Steps

1
Check the battery voltage using a multimeter; it should be at least 12.4 volts.
2
Inspect battery terminals for corrosion or loose connections.
3
Test the battery condition with a load tester to confirm its ability to hold charge.
4
Verify the functionality of the starter motor by checking connections and testing the starter relay.
5
Inspect fuses related to the starting system for any blown fuses.
6
Check the alternator output to ensure it is charging the battery properly when the engine is running.

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

•Multimeter
•Load tester
•Socket set
•Safety glasses
•Gloves

Parts Required

•New battery
•Starter motor

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Diagnostic Steps

1
Check the battery voltage using a multimeter; it should be at least 12.4 volts.
2
Inspect battery terminals for corrosion or loose connections.
3
Test the battery condition with a load tester to confirm its ability to hold charge.
4
Verify the functionality of the starter motor by checking connections and testing the starter relay.
5
Inspect fuses related to the starting system for any blown fuses.
6
Check the alternator output to ensure it is charging the battery properly when the engine is running.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Safety glasses and gloves for personal protection.
Disconnect the negative terminal of the battery to prevent any electrical shorts.

2. Battery Replacement (if necessary)

Remove the Old Battery:
- Locate the battery in the engine compartment.
- Using a socket set, remove the negative terminal first, followed by the positive terminal.
- Unfasten the battery hold-down bracket and carefully lift the battery out.
Install the New Battery:
- Place the new battery into the battery tray.
- Secure the battery with the hold-down bracket.
- Connect the positive terminal first, followed by the negative terminal.

3. Starter Motor Inspection (if necessary)

Access the Starter Motor:
- If the starter is suspected to be faulty, locate it under the vehicle or near the engine block.
- Remove any covers or components obstructing access using a socket set.
Test the Starter Motor:
- Disconnect the electrical connections to the starter.
- Use a multimeter to check for continuity and proper voltage at the starter terminals when the key is turned.
- If the starter is faulty, replace it with a new one.

4. Final Reassembly

Reconnect any components or covers removed during the inspection/repair.
Reconnect the negative battery terminal.
Start the vehicle to check for proper operation.