I'm new here so this may be in the wrong catagory, so sorry for that.
I have a 2005 v6 auto, no IUP, but has TCS.
I experienced this chime noise while going down the freeway. The same sound if you leave the keys in the ignition or the lights on. Was doing about 85 when it just started to chime about 5-8 times, no lights flashing, nothing else weird. Then when I got off at the exit and was hitting the brakes to slow down going around the curve of the off ramp(still doing about 50), it started dinging again 5-8 times. I do not have the IUP , and I did check the trunk & doors, they were all closed tight, seatbelts were fastened. Had over 1/2 tank of gas left, all fliuds are full.
Any ideas???

 

My PT Cruiser does that when I forget to turn off the turn signal on a straight road....Dunno is Ford does this too. I rarely use em

 

Sounds like the seatbelt minder, but you said your belts were fastened...strange. If the seatbelt light was not flashing, then I don't know.

 

Parking brake will also chime if engaged (even slightly).

 

Turn signal

 

Thanks, but I know it wasn't the turn signal, seatbelt, or park brake. Those all have lights in the insturment panel , and nothing was lit up. I have heard it a few times on the hwy now, usually when going about 75-85 but I don't think it is a speed control warning like some have, plus that wouldn't effect the slowing down on the off ramp. Thanks though for the input, hope I can find someone who has had the same problem and maybe a cure?