To troubleshoot starting problems: Don't look for a "starter fuse." Instead, you should check:
* The battery: Make sure it's charged and the terminals are clean and tight. This is the most common cause of starting issues.
* The battery cables: Check for corrosion or loose connections.
* The starter relay/solenoid: This is a common failure point. It's usually located near the starter motor itself. Listen for a click when you try to start the car; if you hear it, the relay is likely working. If there's no click, the relay may be bad.
* The starter motor: This is the least likely suspect to be the culprit, but it could be faulty. This would usually require professional diagnosis.
* Wiring harness: Look for any obvious signs of damage, breaks, or corrosion in the wiring related to the starter.
A qualified mechanic or auto electrician can properly diagnose a starting problem. Attempting to trace the starter circuit yourself without experience could be dangerous due to the high currents involved.