ABS, Brake, Advance Trac and Airbag lights. Shuts off Randomly - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 05-30-2019, 11:07 PM Thread Starter
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ABS, Brake, Advance Trac and Airbag lights. Shuts off Randomly

I was fueling up yesterday and when I got back in the cab, the ABS, Brake and Airbag lights were on. I thought this was a strange combination, so I shut the truck off. I started it back up, the lights stayed off and I went on my way.

It did it again a couple hours later, shut it down and restarted it and all was well again. A few miles down the interstate, it kind of went crazy. It kicked out of cruise and I thought for a second I might have lost another motor. The battery light came on, the gauges all still worked and I was still showing RPM. I drifted to the shoulder and when I tried to accelerate, the truck didn't respond. I started easing on the brakes and as the truck came to a stop, it died. I turned the ignition off for a few seconds, restarted the truck and was on may way again. No CELs, warning lights or anything. The truck did fine the rest of the way home. It did it all again on the way to town a little while later.

I know my symptoms are similar to this thread, but I didn't feel it was similar enough not to warrant a new thread. I've tried to look for more info on these broken wires but haven't really come up with anything.

I hope that there's a common thread between these issues that someone out there knows about. I'm really not looking forward to trying to troubleshoot an electrical problem on this thing.

Thanks for any input.

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post #2 of 4 Old 06-01-2019, 04:04 AM Thread Starter
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It quit on me again this morning. It was much more reluctant to start. Some tries it wouldnít do anything, some it would just bump start. I pulled the key all the way out and that got it going. One thing I noticed is that before the trouble lights come on and stay on the dash, I donít have a chime when I turn the key. Maybe something to do with the starting system? Iíve had random starting system faults before, but it never caused a real problem and havenít had one in a while.

Doesnít make much sense to me.

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post #3 of 4 Old 07-08-2019, 01:50 PM Thread Starter
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Just in case someone finds this thread in the future, it was a failing relay to the PCM. I can't tell you which relay it was exactly, because I had a shop do the looking, but that's what the problem was.

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post #4 of 4 Old 07-11-2019, 08:00 AM
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Quote:
Originally Posted by Old King Coal View Post
Just in case someone finds this thread in the future, it was a failing relay to the PCM. I can't tell you which relay it was exactly, because I had a shop do the looking, but that's what the problem was.
Thanks for the follow up. I am sure it will help someone down the line.
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