what should I do if my Volkswagen Golf MK7.5 (2020-Present) won't start

Solution

1. Preparation

• Gather necessary tools: multimeter, OBD-II scanner, socket set, and safety gloves.
• Ensure the vehicle is in a safe working environment, parked on a flat surface.

2. Battery Inspection and Replacement

• Sub-step 1: Disconnect the negative battery terminal using a socket wrench.
• Sub-step 2: Remove the positive battery terminal.
• Sub-step 3: Inspect the battery for signs of corrosion or damage. If necessary, replace the battery with one that matches OEM specifications (typically 12V, with the appropriate cold cranking amps).
• Sub-step 4: Reconnect the positive terminal first, followed by the negative terminal.

3. Starter Motor Testing and Replacement

• Sub-step 1: Locate the starter motor; typically found near the engine's transmission.
• Sub-step 2: Disconnect the wiring harness from the starter.
• Sub-step 3: Use a multimeter to check voltage at the starter terminal when the ignition is turned on.
• Sub-step 4: If voltage is present but the starter does not engage, remove the starter motor using a socket set.
• Sub-step 5: Replace the starter motor with a new one, ensuring it is properly secured and reconnect all wiring.

4. Ignition Switch Inspection

• Sub-step 1: Remove the steering column covers to access the ignition switch.
• Sub-step 2: Disconnect the wiring harness from the ignition switch.
• Sub-step 3: Test the ignition switch using a multimeter to ensure it provides continuity in the start position.
• Sub-step 4: If faulty, replace the ignition switch and reassemble the steering column covers.