LMM: LMM no interior/exterior/crank power

[TLKDRTYLLY]

Last night an LMM was running perfectly in my driveway, Parked it in the shop and did a Transgo Jr on it. The truck has been sitting for about 3 months prior. I went to start it today and there was ZERO power to anything in the truck. No interior lights, no dash, turn the key and nothing happens. I'm thinking the batteries just flatlined and I'll have them
on the charger tomorrow. (Unsure how old they are) Can anybody relate to this? Hard telling battery voltage as my multimeter is in my toolbox at work -.-however when you disconnect the batteries the typical "spark sounds" were not there. I'm just having a hard time believing batteries gave up all of a sudden over night. I check fuses under the hood and on the drivers side in the cab. I checked ground connections on the block, and followed the battery cables. I Haven't yet checked the mega fuse under the fuse box.


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[Awenta]

Has happened to me. And I know of other as well. Parked at night and next morning nothing at all. Driven every day.

Passenger side battery crapped out and drained the other over night.

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[TLKDRTYLLY]

Placed them both on the charger just now and they immediately went into deep discharge recovery mode. Let's see how this turns out.


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[Harbin_22]

Check your mega fuses on the passenger side firewall too

 

[TLKDRTYLLY]

Just a follow up on my problem. It happened to be deeply discharged batteries. The battery charger was able to recover them and they took a full charge over 7 hours. Load tested and passed. Truck is back up and running great. Thanks for the help Awenta and Harbin_22!


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[rebel7777]

I would change those batteries, typically they only last about 5 years and then they need to be replaced. Seen it on my 04 (x2), 08 (X1) and not on the 12 yet.