wm3ff22

Hey guys, I have a 2014 FX4 5.0, today I installed a K&N Cold Air Intake and Roush exhaust system. I had it out driving around and was getting on her quite a bit and all of a sudden the battery warning light came on. I removed the negative battery terminal and gave it a few minutes to reset and after starting the truck back up it came back on. I didn't touch anything with the battery today until the light came on. I went to a local parts store and head them test the battery and it shows a good battery both with the starting test and discharge/recharge test. I can't for the life of me think of why the light is on.. any techs that can help. I did recheck all connections and everything is tight.. and it didn't come on during normal driving... just when I was getting on her and now it's on all of the time since... please help

bruteforcebob

check alt sensor fuse under hood

wm3ff22

Do you have a fuse number for the fuse your talking about? I don't see anything in my book othere than an auxiliary power supply drive train MAF etc etc. Thats 76 and it's good

RLXXI

Your truck is still under warranty, take it in to a dealer and stop guessing.

bruteforcebob

Fuse 45 per your owners manual

bruteforcebob

pic

wm3ff22

Thank you all for the responses.. I will check the fuse and I have an appointment with the Stealer.... just trying to not have to go there

wm3ff22

Welp, ended up having the alternator sensor wire connector come loose. It's fixed and back to normal.

dieselhunter44

at least it was an easy fix!

bruteforcebob

Glad you got it figured out atleast I was on the right track