If vehicle starts - probably a bad ignition switch If vehicle doesn't start could be a dead or low battery, loose or corroded battery cables
This usually happens when power is disconnected from the computer unexpectedly. A critical error in the system might possibly cause this, but that is very unlikely.
Either the LED has blown (like all lights, LED's blow, too), or it has been disconnected
If you mean "disconnected' instead of "discovered" then it is because there is still power stored in the capacitors both in the power supply and on the motherboard. If you have any small lights on your computer, try unplugging the computer then pressing the power button. The lights should go on for a second and then go out. This action should discharge the capacitors.This can act the same as static electricity stored in your body in that it can connect two wires and cause a short circuit and damage components.For more information see the answer to the Related question shown below.
The lights are computer controlled. The under hood computer can set codes and keep the lights from working.
Maybe. The engine computer is the voltage regulator, with the battery disconnected it may not be able to control the alternator output voltage correctly. This could cause it to go low or high.Maybe. The engine computer is the voltage regulator, with the battery disconnected it may not be able to control the alternator output voltage correctly. This could cause it to go low or high.
Yes, because the lights are controlled by computer.
blown bulb due to short circuit, faulty ground, or broken wire
There are several things that can cause your 2000 Cadillac dashboard lights to quit working. The most common cause is a blown fuse.
There are several things that can cause your GMC Envoy dim lights not to work. The most common cause is a blown fuse. A loose or corroded ground wire can also cause a problem.
Downloads other things that can cause harm to your computer. It's better not to have one and find out.
Reset computer,
There are several things that can cause your 1998 Mercury Villager rear fan to stop working. The most common cause is a disconnected or corroded ground wire.