why does my Volkswagen Tiguan First Generation (2007-2018) have a strange smell when I start it

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent any electrical issues during repair.

2. Inspect and Clean Engine Components

• Tools Required: Socket set, cleaning rags, degreaser
• Remove any debris or dirt from the engine bay.
• Use a degreaser to clean areas that show signs of oil or fluid leaks.
• Check rubber hoses and belts for wear; replace any that are cracked or damaged.

3. Replace Damaged Parts

• Tools Required: Socket set, torque wrench
• If any damaged components (hoses, belts, spark plugs) are identified, replace them:
  • Remove the old parts carefully, noting their orientation and connections.
  • Install new components, ensuring to torque bolts to manufacturer specifications.

4. Address Exhaust System Concerns

• Tools Required: Wrench set, jack stands
• Inspect the exhaust system for any cracks, holes, or loose connections.
• Tighten or replace any loose clamps, and if needed, replace damaged sections of the exhaust.

5. Reconnect Battery and Test

• Reconnect the battery terminals.
• Start the vehicle and allow it to idle; observe for any unusual smells or sounds.
• If the smell persists, further investigation may be required for deeper engine issues.