Car Repair World

Where is the alternator fuse Located On  2001 bmw x5 The generator, (alternator), is just one part of the charging system. Your mechanic should have performed some voltage tests first to rule out any other possibility. All generators will have a wire to turn it on when the ignition switch is turned on or when the engine is running. A break in that wire will stop the system from working. A break in the wire between the generator's output terminal and the battery will prevent it from recharging the battery but that usually won't cause the warning light to turn on. There is usually a very large fuse in the under-hood fuse box for that circuit. There may also be a fuse for a circuit for the voltage regulator to monitor system voltage. If that one is blown, the voltage regulator won't turn on. If you have an inexpensive digital voltmeter, measure the battery voltage while the engine is running. It must be between 13.75 and 14.75 volts. I suspect it will be low since th...

Hooked battery wrong way If you hooked the battery up backwards then you likely smoked the fuse links at the starter solinoid on the inner fender passenger side. but it likely id the alternator was smoking then you likely smoked it as well. Start by checking all the fuse links at the starter solenoid, and im sure you burnt one or 2 . Replace them and the alternator. Check fuses..... Fusible links....... once you get the power back, watch your alternator, theres a chance hooking power leads up backwards can kill the Alternator. Reversing the battery connections is not too uncommon. If the key is off the damage is often just fusible links and fuses and the alternator. If, however, the key is on a great deal of damage can be done. Many relays, the computer, the ignition switch, etc. If the starter was engaged, it too might have been damaged. And there is the possibility that wires, anywhere in the harnesses, have damaged insulation but won't short out until some future tim...