Multiple Failuer Issues
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Multiple Failuer Issues
I just returned from a weekend camping trip. My 2016 Lariat. 4x4 3.5 ecoboost, was parked while I was away. Just went out to make a run to town and had multiple issues. Front windows will not operate, cannot adjust steering wheel, seat position favorites will not work, outside temp not working, can't adjust mirrors, ac will not run. Radio can be controlled from steering wheel controls but not radio dials. Side cameras not working. There are probably a few more items that I have not caught yet. All problems appeared at once? Suggestions?
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Thanks for the quick replies. Although the truck started ok and I was able to drive it and start and stop multiple times, still a battery and/or cable issue?
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12.5 off. 14.8 running.
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Fleet Mechanic
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Many auto parts stores, like Autozone, will test the battery for free.
You can have acceptable voltage and still fail the load test.
You can have acceptable voltage and still fail the load test.
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Battery. It will soon fail completely. These AGM batteries can't be saved like a lead acid type. Unfortunately with the BMS on these trucks, short trips will lead to an early death. At least once a week see if you can put 25 uninterrupted highway miles on it. That or disable the BMS. If it's parked for extended periods of time, put a battery tender on it.
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Truck starts without any hesitation, sounds normal.
Also see that tire pressure monitoring is not working and chime that door is open does not work, and the seatbelt warning light will not clear after engaging seatbelts. I said side cameras were not working, but they are ok. It's the cross traffic warning system and blind spot system that are not working.
I suspect there is a control module not working properly. But if I knew what was wrong, I would not be asking for input from the forum.
I placed the battery on charge and will check it in the morning. If everything works, I will change out the battery tomorrow afternoon. If everything does not work, I might change out the battery anyway?
If that fails, to the dealership it goes.
Also see that tire pressure monitoring is not working and chime that door is open does not work, and the seatbelt warning light will not clear after engaging seatbelts. I said side cameras were not working, but they are ok. It's the cross traffic warning system and blind spot system that are not working.
I suspect there is a control module not working properly. But if I knew what was wrong, I would not be asking for input from the forum.
I placed the battery on charge and will check it in the morning. If everything works, I will change out the battery tomorrow afternoon. If everything does not work, I might change out the battery anyway?
If that fails, to the dealership it goes.
Lead Driver
Joined: Dec 2016
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From: GA
Truck starts without any hesitation, sounds normal.
Also see that tire pressure monitoring is not working and chime that door is open does not work, and the seatbelt warning light will not clear after engaging seatbelts. I said side cameras were not working, but they are ok. It's the cross traffic warning system and blind spot system that are not working.
I suspect there is a control module not working properly. But if I knew what was wrong, I would not be asking for input from the forum.
I placed the battery on charge and will check it in the morning. If everything works, I will change out the battery tomorrow afternoon. If everything does not work, I might change out the battery anyway?
If that fails, to the dealership it goes.
Also see that tire pressure monitoring is not working and chime that door is open does not work, and the seatbelt warning light will not clear after engaging seatbelts. I said side cameras were not working, but they are ok. It's the cross traffic warning system and blind spot system that are not working.
I suspect there is a control module not working properly. But if I knew what was wrong, I would not be asking for input from the forum.
I placed the battery on charge and will check it in the morning. If everything works, I will change out the battery tomorrow afternoon. If everything does not work, I might change out the battery anyway?
If that fails, to the dealership it goes.
Hopefully all you need is a new battery.
Also, be careful when charging an AGM battery because they don’t take over charging very well.
Fleet Mechanic
Joined: Jan 2020
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Tough to say. If you tested that fairly soon after shutting it off, I would say 12.5 is not acceptable. If it is original, I would change it out no matter what (be sure to reset battery monitor if needed)
Let us know after an overnight charge
Let us know after an overnight charge