Question about Cars & Trucks
If a battery light comes on it usually means the battery is not being charged. i would take the battery out and take it to a place that sells batteries and get it checked. Should be no money charge for that . If the battery is good then check the alternator and see if it is working. Could be both are bad.
Posted on Dec 17, 2016
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: Battery Charge
The best way is to get a voltmeter and check the voltage of the battery with the truck running and not running. When the truck is running, the voltage across the battery terminals should be aboput 14.9 volts (showing the alternator is charging the battery). With the truck off, the battery voltage should be about 12 volts (showing that the battery is holding the charge). From there, you should be able to tell which is bad.
Posted on Aug 14, 2008
Is it a remanufactured alternator. It sounds like you either got a faulty alternator or a wire is hooked up incorectly to it. I would test the voltage on the new one to make sure it wasnt a lemon If you are sure the wires are hooked up correctly.
Posted on Mar 15, 2009
In my case, the instrument cluster was bad, causing the MFI display and radio to go haywire and putting a contstant drain on the battery. $760 to have the VW shop replace it. No problems related to the battery or alternator have occurred since.
Posted on Apr 23, 2009
Replace your battery when its being tested there not testing it under a heavy enough load. A battery could have a dead cell in it and still show good on the charger. I've had that problem a few times.
Posted on Jul 07, 2009
What is the voltage you are reading? Is it below 13.2 or so? Also have you checked the current with the engine off to see if something else is working that should not be on. I ran across this twice while working on a truck and car. A relay that was wore out keep trying to close and would drain the battery every couple of months. Sometimes you can hear them clicking or buzzing. Touching them sometimes they are warm or real hot. But that is not a sure sign it is bad. In my Trailblaze they get hot but are ok. Another thougth is the belt on your alt, correctly set to spin it at the right voltage. I have ran across this many times lately with serpatine belts.
Posted on Aug 04, 2009
Tips for a great answer:
Feb 07, 2016 | Cars & Trucks
Oct 15, 2017 | 2005 Volkswagen Jetta
Jan 22, 2013 | 2002 Toyota Sequoia
Feb 02, 2011 | 1995 Jeep Grand Cherokee
Mar 22, 2010 | 2005 Chrysler 300
Jan 08, 2010 | 2005 Dodge Grand Caravan
Nov 06, 2009 | 1998 Dodge Grand Caravan
Nov 03, 2009 | 1994 Mazda Navajo
Apr 01, 2009 | 1999 Pontiac Grand Am GT
Sep 26, 2008 | 2001 Chrysler PT Cruiser
14 people viewed this question
Usually answered in minutes!