Hello all,

Edit: My truck is a 2015 F150 Lariat

I am experiencing what some others have experienced when it comes to the tones coming from the dash instead of through the speakers like normal. This includes reverse beeps, collision beeps and I believe blinker tones as well. About a month ago my battery died and the tones showed up after a jump start. I replaced the battery and immediately the old dash tones went away and its been good for about a month or so. Just recently these past few days, I cannot do anything to fix the dash tones back to normal how they were intended. I have tried to unplug the battery for 30 minutes, cleaned any corrosion away, even replaced the negative terminal because it had some corrosion on it. I had the battery tested which tested good along with the alternator and was at 12.6v at rested. I also checked the fuses and everything on the truck is working.

What else can I do to try to fix these dumb sounding tones and have my truck back to normal?!

 

Check out FOREscan, I got rid of all the obnoxious chimes / tones. I can now put my key in the ignition and no more noise!!!

 

Disconnect the BMS and see if your tones shoot back to coming from the speakers. If not, I'd suspect an issue with the ACM.

 

I don’t have the bms sensor on the negative battery terminal so I’m not sure where it is. I did have a black connector about 6 inches down from the negative battery terminal that kind of went to a harness and I unplugged that but no change.

I have been doing resets in Forscan for the BCM and whatnot and still to no avail.

 

The connector that leads to a loop around the negative wire coming off the battery is the sensor for BMS. If disconnecting that does nothing (forces the alternator to charge to full battery voltage), then the problem does not lie with system voltage at the source.