Rookie mistake on 12v battery change

[ychuck46]

[QUOTE="TacoTanium, post: 914264, member: 28446"
[/QUOTE]
Here is a post on the topic you may want to read as well:

https://www.mavericktruckclub.com/f...ing-the-telematics-control-unit-module.36040/

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[TacoTanium]

The Maverick has two fuse box locations, one under the hood and the other under the glove box flush against the back wall near the passenger's feet. Fortunately you are dealing with the inside the cab one which is the easier of the two. Just pop the plastic cover off (it pops back on easily when done) and the TCU fuse is in position 11. It is a 5A Micro3 fuse, the newer style, and comes out easily like any fuse.

The dealer did not recommend this; I doubt any would since it is used by Ford more than anyone to collect data on your driving habits, etc. It was a person here in the Mav truck club and it made a lot of sense. We have not noticed anything odd since we did it since we can still receive calls through the truck's screen and so forth. We had all the FordPass apps, wi-fi, and anything else turned off prior to this, but it didn't seem to help since Ford was still using it, and was likely the source of much of the clicking sounds that took place hours after turning the truck off. Only time will tell if it helps the battery situation, and we have a '25 on order to replace this one. May not know before that one comes in. Good luck, guy.

Here is a post on the topic you may want to read as well:

https://www.mavericktruckclub.com/f...ing-the-telematics-control-unit-module.36040/

Thanks! Does the remote start from the keyfob still works (if you have that feature)?

 

[ychuck46]

Thanks! Does the remote start from the keyfob still works (if you have that feature)?

Not sure; never use it. I believe others said it still does even if you pull the one fuse we discussed.

 

[Ozarkbeard]

Thanks! Does the remote start from the keyfob still works (if you have that feature)?

It should work. I removed fuse 11 not long after I got my 2023 XL hybrid. All fuse 11 powers is the telematics control unit and nothing else. No lights or other warnings appear and everything works as it did before except the TCU.

I have remote start on my XL, although it's an aftermarket Start-X. I'm pretty sure the key fobs work on 315 mHz band and have nothing to do with the TCU, Wi-Fi, Bluetooth or cell tower connection. Same frequency as a garage door opener, at least that's what I've been told.

I use a (noco) battery maintainer occasionally when not driving the truck for a few days. I also reset the BMS after each maintenance charge. I have used maintainers in older vehicles, too, and usually got 5 to 8 years out of the 12 volt batteries. I have had no battery issues with the Maverick in almost 12 months and 17K miles of ownership.
YMMV

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