1. Battery terminals: Ensure that the battery terminals are clean and free of corrosion. Clean them with a wire brush if necessary.
2. Ground connection: Check the ground connection between the battery and the chassis. Ensure it is tight and clean.
3. Starter motor: Check if the starter motor is receiving power. You can do this by using a multimeter to test for voltage at the starter solenoid.
4. Fuel: Check if the fuel pump is working and if the fuel filter is clogged.
5. Ignition switch: Check if the ignition switch is faulty. You can do this by bypassing the ignition switch and seeing if the car starts.
6. ECU: Check if the Engine Control Unit (ECU) is receiving power and is not damaged.
If you are not comfortable performing these checks, it is best to take your car to a qualified mechanic for diagnosis and repair.
