Battery light comes on. Had battery tested and it's OK.Checked battery voltage with key off 12.04 volts, started it voltage is 14.45. The light comes on after driving for awhile.

Do a load test on the battery - probably needs replacing.

Click no start is typically a bad battery, bad starter, bad solenoid or loose dirty battery connections. But seems you have covered those items. Have you checked you negative battery cable where it attaches to the frame and motor? Use multi meter and check from positive of battery to the motor(block) for 12 volts. Also do this while turning key to start position. If voltage drops out when doing this double check battery voltage and all connections. If it does not drop then check the solenoid wire coming from ignition. When key in start position you should have a good twelve volts. If you you do then test the main leads hooked to solenoid for power. If solenoid wire from ignition has less than 12 volts double check connections at battery and also test the clutch pedal switch.

Sounds like you need to test voltage coming out of the alternator. Look for 12-14.1 volts using a multi meter. If that is ok then you have an ecu problem

IF battery voltage is above 12.2 volts, I'd suspect a bad IGN switch

Check the output voltage of your alternator by starting your car and place a voltmeter to your battery's + and - ... it should read 13.5-14.5 volts, or if your car won't start, have it tested at auto parts store (they will do it for free usually). Im pretty sure your alternator is ok, but it does need checked. If your voltage is within range (give or take 0.5 volts), then you need to check to see if your battery is taking charge. You can have it tested at autoparts store as well, but if your car does indeed start, and your testing it this way, turn off vehicle and let it sit for 30 min. Check battery voltage. It should read 12.5 to 14.5, (no lower than 12.5v) If your battery reads low, then it is refusing to charge and your battery is bad. If your battery reads fine, then you can run this test of your other starter components this way:

1. Make sure your battery is fully charged.
2. Check connections from battery to starter relay.
3. Make sure you have voltage going to the start side (small wire) of the relay with the key in the "start" position.
4. If you don't have voltage going to the start side of the relay (small wire) with key in the start positon, then your starter switch is faulty (under dash usually mounted on top of steering column).
5. If you have voltage to the start side of the relay (small wire) with key in start position, and it don't click when trying to start your car, then the starter relay is bad.
6. If your starter relay clicks, but engine don't turn over, then the starter is faulty.

does the security light come on? You might have to sit there with the key in the "ON" position for 10-15 minutes until the security light goes off to reset the security system.

The Battery warning light comes on because the Alternator output voltage has fallen below the voltage (about 12.8 volts DC) required to keep the battery charged, this low Alternator voltage causes the light to come on while this condition is happening. In your case unless the Alternator is tested while the battery warning light is on it will test ok/no problem. The battery itself doesn't turn the light on, only the Alternator malfunctioning. I would think you have a part called a "Diode" failing in the alternator or a wiring issue at the alternator connector(s), either way you need to isolate the problem, it will get worse and you will end up with a no start.

If its not cranking at all, then it can be issue with battery or starter.Get the battery and starter voltages checked. It should be approx 12 volts, if battery is properly charged. Check battery and starter terminals voltage with volt meter. ------- If both battery and starter checks out ok and shows proper voltage then its quite possible that problem is ignition switch, the switch is getting short, that is not letting the car to start.------- But if car cranks and battery and starter both checks out ok, then its problem with fuel pump or spark plugs, that needs to be tested, to confirm the fault. --------- This will help.Thanks.Helpmech.

Test the battery, just because it can illuminate lights does not mean that it can start the car. To verify this take a volt meter and test the voltage of the battery, you should be getting a voltage of 12.6v, then test the voltage while trying to start the car. you you will want a voltage in the area of 11.0 volts. if it is lower then that you will want to replace the battery.

take the battery in to have it tested it may be defective. if the battery tests ok your alternator isn't charging. if you have a volt meter , your battery voltage should be no lower than 12.5 volts dc and with the motor running you should see no lower than 13.5 volts dc with everything turned on (lights, ac on fan on high) if the voltage drops below that your alternator is bad.