Bad Battery
- Thread starter ackull
- Start date
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Did you leave it on by accident?
gdflynn1
Full Access Member
Just had similar issues: truck in battery saver mode, Ford app disconnects, etc... 20k miles on my '21
Had Ford Mobile tech service out today. Good dude. Said the Ford batteries sucked and just gave me a new one without wasting time since I am still under warranty.
Let's see how it goes.
Had Ford Mobile tech service out today. Good dude. Said the Ford batteries sucked and just gave me a new one without wasting time since I am still under warranty.
Let's see how it goes.
TXRaaptor
@thebeardedbrand
So I woke to a Ford Pass app notification from 23:07hrs last night saying my remote services had been disabled and the truck was going into a deep sleep mode to preserve battery?
There was no warning prior and I drive ~80 miles a day just to work and back, so it gets a decent charge each day.
Jumped it off the wife’s loaner Jeep while her Expedition Timberline is in the shop and it immediately came back to life and showed 11.5v, jumping to 14v - 14.5v once the truck fired up.
Key lives in a faraday box every night and the spare is in a faraday bag in a safe.
I have recently installed the BD OnX6 light bars so my initial thought was anything there. The Ford Tech done a battery health check and load test and all checked out. He also said the connections for the lights looked well wired, so no obvious issue connected to the install.
My next thought was the FP Tuner/Programmer as it’s plugged in via the OBD port and mounted to the windshield. It was on when I went out to the truck this morning… Could that not going to sleep be enough to cause a truck to go into feel sleep mode overnight to preserve battery life?
Last thought was around the module that control the gear selector and the the module for the 4WD system, as I’ve had the error messages that pop up around those without logging an error code? They clear with my programmer.
It’s booked in now to have the modules looked at, but Ford sent me on my way saying the battery was healthy so they can’t change it without it failing a load test etc. Recommended having a jumper pack on me… Said I didn’t think I should need one as have jumper cables, but if there’s no vehicle to jump from then I guess I’d be goosed…
There was no warning prior and I drive ~80 miles a day just to work and back, so it gets a decent charge each day.
Jumped it off the wife’s loaner Jeep while her Expedition Timberline is in the shop and it immediately came back to life and showed 11.5v, jumping to 14v - 14.5v once the truck fired up.
Key lives in a faraday box every night and the spare is in a faraday bag in a safe.
I have recently installed the BD OnX6 light bars so my initial thought was anything there. The Ford Tech done a battery health check and load test and all checked out. He also said the connections for the lights looked well wired, so no obvious issue connected to the install.
My next thought was the FP Tuner/Programmer as it’s plugged in via the OBD port and mounted to the windshield. It was on when I went out to the truck this morning… Could that not going to sleep be enough to cause a truck to go into feel sleep mode overnight to preserve battery life?
Last thought was around the module that control the gear selector and the the module for the 4WD system, as I’ve had the error messages that pop up around those without logging an error code? They clear with my programmer.
It’s booked in now to have the modules looked at, but Ford sent me on my way saying the battery was healthy so they can’t change it without it failing a load test etc. Recommended having a jumper pack on me… Said I didn’t think I should need one as have jumper cables, but if there’s no vehicle to jump from then I guess I’d be goosed…
Last edited:
Donmatteo
FRF Addict
Ford Batteries aren't the best.
There are 3 camps when it comes to the battery.
1. OEM is still in the truck and will fail soon.
2. OEM failed and was replaced under warranty but will fail again soon.
3. OEM failed and was replaced by another manufacturer (H8)
There are 3 camps when it comes to the battery.
1. OEM is still in the truck and will fail soon.
2. OEM failed and was replaced under warranty but will fail again soon.
3. OEM failed and was replaced by another manufacturer (H8)
CancerDoc22
Member
Funny enough my battery was #1 on delivery. When I got the truck I couldn't drive it for about a week because it had no temporary plates (bought out of state). Being in and out of the truck without running it drained the battery to completely dead. Once I was able to drive it I never had any problems other than the occasional Ford Pass reduced battery mode after a few days of not driving. However I just got back from a 1,000 mile trip so it should have been completely charged. Well the truck sat for a week because I haven't been feeling well, and it was completely dead again. No Ford Pass notification.
So I just got a Duralast platinum AGM H7 today, because I knew #2 seems to be the standard on this forum. So far no issues. I have it on a tender right now to top it off.
I'm sure me letting the battery get to completely dead initially didn't help. However with the inumerable reports of these OEM batteries crapping out early, it probably would've happened anyway. And I wasn't going to risk it with a warranty replacement.
I got a new battery after 700 miles and 3 weeks of ownership of my '24 when I got an error related to the gear shift module. They claimed the battery was not holding a load causing an error with the gear shift module. My GSM won't fold down sometimes, it'll just click now. Will be replacing it on my own.
Who knows if the previous battery was bad or not given how incompetent my local dealer is, but I still put my CTEK MX 5.0 smart charger on my battery once a month given all the electronic doodads on these trucks.
Who knows if the previous battery was bad or not given how incompetent my local dealer is, but I still put my CTEK MX 5.0 smart charger on my battery once a month given all the electronic doodads on these trucks.
Sharkus29
Full Access Member
My battery failed on my 24 5 months after I bought the truck
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