How Can You Tell If Your Alternator Is Going Bad. This video will briefly explain how to tell if you have a bad auto battery or bad alternatorDetailed info about bad batteries. Often youll see the red battery icon light stay on but you may also see a Check Engine or ALT indicator.
A bad alternator can killing your cars battery even if the battery wasnt the problem to begin with. What you can do to prevent alternator failure in your BMW Hire an automotive repair shop that specializes in servicing BMW vehicles. If you hear a small rattling or grinding sound when your engine is running this could be caused by a loose bearing in your alternator.
To do that the alternator has to be able to pour electricity in faster than the electrical system can drain it out.
First open the hood and start the car. While not technically an alternator problem a car that wont start is a definitive sign that theres a problem in the starting system. Considering the price of a new alternator as well as labor you should expect to spend anywhere between 500 and 1000 to get a new one for your vehicle. If your battery can start your vehicle but dies as the car runs you have a faulty alternator.
