my BMW 5 Series won't start and just clicks, what do I do?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal for safety.

2. Battery Inspection

• Use a multimeter to check the battery voltage.
  • Sub-step: If the voltage is below 12.4 volts, charge or replace the battery.
• Clean battery terminals with a wire brush to remove corrosion.
  • Tools Required: Wire brush, battery terminal cleaner.

3. Starter Motor Testing

• Locate the starter motor (typically found near the engine's transmission).
• Use a remote starter switch or jumper cables to bypass the starter.
  • Sub-step: If the starter engages and the engine turns over, the starter is faulty.
  • Tools Required: Remote starter switch or jumper cables.

4. Fuse Inspection

• Open the fuse box and locate the fuses related to the starting system.
• Replace any blown fuses with the correct amperage rating.
  • Tools Required: Fuse puller or pliers.

5. Wiring and Ignition Switch Check

• Inspect the wiring harness for damage or loose connections.
• Test the ignition switch operation by turning the key and checking for continuity.
  • Sub-step: Replace the ignition switch if it's faulty.
  • Tools Required: Multimeter.