Main Battery Not Charging - CEL P068A & P2AF5 (Open Relay “C”)

[Bleublaze55]

Is battery replacement covered under 3-year/36K bumper-to-bumper warranty or is it considered a wear item?

Just had my RHO go dead the other day at work. Got a jump and trickle charged over night. But now I live in fear & am shopping portable jumpstarters...

It's replaceable under warranty in these situations.

 

[rpr]

Just heard from the dealer that the root cause of my issues was the infamous “blown fuse that causes dead batteries”.

I’ve seen several other posts from other members about a fuse blowing that caused dead batteries in their truck’s 1st ~2K miles. I was around 1,300 miles when it happened, in the midst of my 1st long road trip of course.

In the dealer’s words, it’s a “150 amp fuse array”. The only 150 amp fuse I see mentioned in the manual is for the “Aux PDC”. That doesn’t sound like it would affect the charging circuit between the main battery and the alternator, so I’ll be asking if they can point out the location of this fuse array when I pick it up.

Assuming it’s an OTC part(s) I’ll be traveling with a few of those fuses in the future…probably easier to replace the fuse than running an extra battery cable between the positive posts of the two batteries to keep them both charged.

 

[rpr]

Unfortunately, no one was at the dealer that I could speak to about the repair when I picked the truck up. But the service ticket says the PDC was removed, the main 150 amp fuse in the PCM fuse array was found blown and replaced.

Part #68668632 is referenced but Mopar shows that as being a 100 amp fuse array, when 150 amp is referenced 3 times on my service ticket.

Regardless, all seems well with the truck now.

If you’re warning lights are going off, your batteries are dying and a DMM shows that your main battery is not getting a charge from the alternator when the truck is running, you probably have a blown PCM fuse array.

 

[lazerbeak]

Mine was a failed auxiliary battery. So that was replaced under warranty.

Dealer also performed some open recalls - and is ordering parts of other open recalls & will contact me once those parts arrive.

Overall it was a better experience than I expected honestly.

I just really hope it doesn't continue to be a problem. I guess I could always upgrade to improved batteries over the OEM unit/s too.