Go Back   F150online Forums > Body > Electrical Systems
Sign in using an external account
Register Forgot Password?

Electrical Systems SPONSORED BY:

Instrument panel battery light blinking

Thread Tools Search this Thread Display Modes
Old 02-28-2006, 10:18 AM
Junior Member
Join Date: Feb 2006
Posts: 5
Instrument panel battery light blinking

I have a similar issue previoulsy posted about a weird battery light. In my case, I noticed my battery light would flicker, stay illuminated for differing amounts of time, and then go off. The headlights would dim as after I stopped. Yesterday, it stayed on, had a local parts store test things out, and I wound up replacing the battery. The light remained off for the rest of the day. Today, however, it stayed illuminated all the way into work (about 35 miles), but did it's little flicker trick when I stopped at traffic lights. I'll go check for loose wires, etc., but am I looking at replacing my alternator?

2000 F-150 XLT
152000 miles
Reply With Quote
Old 02-28-2006, 10:39 AM
Technical Article Contributor
Join Date: Jun 2002
Location: Under the flightpath of ORD 22R
Vehicle: 2006 FORD F150
Posts: 10,314
Start out with putting a set of wires ( fused ) from the battery, up the fender into the cab. Hook up a meter to the leads, and check the voltage when driving, to find out if you are over or under charging. This would be a good place to start with, rather then just replacing stuff without testing.

You made no mention of it, are the battery terminals clean and tight ? I would suspect so, with just replacing the battery. Did you check the other end for corrosion and tightness ? I am drawing a blank, but is there a fuse on the '00 just behind the battery on the firewall for the alternator circuit ? My '01 has only been gone for about a month, and the layout is quickly disapearing from my memory... If it is where I think it is, is the fuse fully seated, and the contacts clean ?

The reason for the clean/tight questions, is it could be adding resistance to the circuit, and the battery might not be getting the full charge output from the alternator, and maybe causing the batt light ?? Just guessing, until we get a bit more info.
Reply With Quote
Old 02-28-2006, 10:15 PM
Senior Member
Join Date: Feb 2001
Location: Guyton, GA USA
Vehicle: 2012 Ford F150
Posts: 748
If you check the items SSCULLY indicated and it still acts up, be prepared to buy a new alternator.
Reply With Quote
Old 02-28-2006, 10:15 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off

All times are GMT -4. The time now is 08:16 PM.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford is a registered trademark of the Ford Motor Company
Contact Us Advertising Privacy Statement Terms of Service Jobs Forum Text Archives
Emails & Contact Details