my BMW 3 Series won't start and just clicks what should I do

Solution

1. Preparation

• Gather tools: multimeter, jumper cables, battery tester, socket set.
• Ensure the vehicle is in 'Park' or 'Neutral' and the parking brake is engaged.
• Disconnect the negative battery cable to ensure safety while working.

2. Battery Replacement (if applicable)

1. Remove Old Battery

   • Use a socket set to remove the battery hold-down clamp.
   • Disconnect the negative terminal first, followed by the positive terminal.
   • Carefully lift the battery out of the tray.

2. Install New Battery

   • Place the new battery in the tray and secure it with the hold-down clamp.
   • Connect the positive terminal first, followed by the negative terminal.
   • Ensure all connections are tight and free from corrosion.

3. Starter Inspection/Replacement (if applicable)

1. Remove Starter Motor

   • Disconnect the negative battery cable again for safety.
   • Access the starter motor (may require removal of additional components for clearance).
   • Disconnect the wiring harness and remove the mounting bolts using a socket set.

2. Install New Starter Motor

   • Position the new starter motor in place and secure it with the mounting bolts (consult torque specifications for your specific model).
   • Reconnect the wiring harness ensuring a secure fit.
   • Reconnect the negative battery cable.