why does my Volkswagen Golf Eighth Generation (2020-present) make a rattling noise at startup

Solution

1. Preparation

• Tools Required: OBD-II scanner, mechanic's stethoscope, socket set, torque wrench, safety goggles, gloves.
• Ensure the vehicle is parked on a level surface, and the engine is cool before starting work.

2. Secure Loose Components

• Sub-steps:
  1. Use a socket set to tighten any loose bolts on the engine cover and heat shields.
  2. Inspect and tighten exhaust system hangers if any are found loose.
  3. Replace any broken or worn-out heat shield clips with new ones.

3. Inspect and Replace Belts

• Sub-steps:
  1. If the belt is loose, adjust tension according to manufacturer specifications.
  2. If the belt shows signs of wear (cracking, fraying), replace it with a new OEM belt.
  3. Align the new belt according to the routing diagram found on the engine compartment.

4. Engine Oil Change (if necessary)

• Sub-steps:
  1. Drain the engine oil using a socket set to remove the oil pan bolt.
  2. Replace the oil filter with a new one, ensuring the O-ring is not stuck to the engine.
  3. Refill the engine with the manufacturer-recommended oil type and quantity.