Soccerstudd5 Posted December 9, 2009 Share Posted December 9, 2009 Don't know if this has been posted before but I just encountered it and thought that it could be useful knowledge for others, and someone correct me if I'm wrong. About a week ago, the battery and brake light would come on the dash and wouldn't go away until revved above about 2800-3000 RPM's. I didn't pay much attention as I have had weird lights come on and mean nothing before. But then a few days ago they stayed on no matter what. Then the pathy died while driving laat night with the lights on. All electrical went out and it died, I'm sure you all know what happens when the alternator goes out. Almost got hit cause it was night and I was trying to push it out of the road and didn't have enough power for hazard lights.... bad situation. Anyways.... replaced the alternator today and charged the battery a bit. I've since driven it 30 miles or so and the battery and brake light are now no longer on. I can only assume that those two on at the same time is the dummy light for the alternator going bad. So the long and short of it: if the brake and battery light is coming on until you rev it up, you may want to get your alternator checked and/or replaced. Link to comment Share on other sites More sharing options...
adamzan Posted December 9, 2009 Share Posted December 9, 2009 Yeah this is the "code" for dead alternator. If you have an AT it will be brake, battery, and AT TEMP lights. Link to comment Share on other sites More sharing options...
andreus009 Posted December 9, 2009 Share Posted December 9, 2009 Why on earth would they make the brake light come on if the alternator is bad? The battery light alone should be sufficient to tell you to investigate your electrical system. If I saw a double light like that I would have thought it was instrumentation issue instead of real problem..... Link to comment Share on other sites More sharing options...
Alkorahil Posted December 9, 2009 Share Posted December 9, 2009 They wanted to make you think the vehicle was about to explode so you and turn it off. Link to comment Share on other sites More sharing options...
Precise1 Posted December 9, 2009 Share Posted December 9, 2009 *snort* B Link to comment Share on other sites More sharing options...
edicer2 Posted December 9, 2009 Share Posted December 9, 2009 yup thats what happened in my 300zx when the alternator took a @!*% on me. they would go off but ifi had the lights on or the the radio or thelinks or press the brakes they poped on lol Link to comment Share on other sites More sharing options...
Soccerstudd5 Posted December 9, 2009 Author Share Posted December 9, 2009 (edited) Why on earth would they make the brake light come on if the alternator is bad? The battery light alone should be sufficient to tell you to investigate your electrical system. If I saw a double light like that I would have thought it was instrumentation issue instead of real problem..... That's what I thought, but I got my battery tested and it was fine so I just ignored it. Turned out to be a bad idea. Also, my alternator was covered in grease and oil... any ideas? I plan on taking a closer look at the engine in about a week when I can put it in the garage and I'm not in my apartment parking lot when it's below freezing, and possibly taking it into the shop. Edited December 9, 2009 by Soccerstudd5 Link to comment Share on other sites More sharing options...
Ultrafinder Posted December 9, 2009 Share Posted December 9, 2009 Mine does it in cold mornings. Usually when the temps are below 35. Link to comment Share on other sites More sharing options...
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