why does my Volkswagen Tiguan make a clicking noise when starting

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface with the parking brake engaged.
• Disconnect the negative battery terminal.

2. Battery Inspection and Testing

• Sub-steps:
  1. Remove the battery terminals, starting with the negative terminal.
  2. Inspect the battery for any physical damage or leaks.
  3. Clean the battery terminals with a wire brush and baking soda solution if corrosion is present.
  4. Reconnect the terminals securely and test the battery voltage again.

Tools Required:

• Multimeter
• Wire brush
• Baking soda (for cleaning)

3. Starter Motor Inspection

• Sub-steps:
  1. Locate the starter motor under the vehicle (usually near the transmission).
  2. Disconnect the electrical connections to the starter.
  3. Remove the starter motor mounting bolts (refer to the vehicle manual for torque specifications).
  4. Inspect the starter for signs of wear or damage and bench test it if possible.
  5. Replace the starter motor if it fails the test.

Tools Required:

• Socket set
• Torque wrench

4. Ignition Switch and Relay Check

• Sub-steps:
  1. Access the ignition switch by removing the steering column covers (if applicable).
  2. Inspect the ignition switch for wear or damage, ensuring it engages properly.
  3. Check the starter relay by swapping it with another relay of the same type or testing with a multimeter.

Tools Required:

• Screwdriver set
• Multimeter