Possible electrical problems that may cause the car to not start:
1. Battery
*Dead or faulty battery
* Loose or corroded battery terminals
2. Starter
* Faulty starter
* Disconnected or damaged starter connection
* Worn retractor solenoid
3. Ignition switch
* Faulty mechanical key or electronic ignition system
* Damaged or worn contacts
4. Electrical wiring
* Broken, shorted or frayed wires
* Damaged or loose connectors
5. Fuel supply system
* Faulty or clogged fuel pump
* Damage to the electrical wiring supplying the fuel pump
* Faulty fuel system sensors
6. Ignition system
* Faulty spark plugs, ignition coils or wires
* Worn or faulty ignition distributor
7. Electronic control unit (ECU)
* Faulty or damaged ECU
* Damaged wiring or ECU connectors
Checking and troubleshooting:
* Check the battery and terminals.
* Inspect the starter and its connections.
*Remove and check the ignition key or electronic system.
* Check wiring for breaks, shorts and loose connections.
* Make sure the fuel pump is working properly.
* Check spark plugs, coils and ignition wires.
*If necessary, scan the ECU for trouble codes.
Please note: Checking and correcting electrical problems requires specialized knowledge and skills. If you do not have the necessary experience, it is recommended that you seek professional help from an auto mechanic.