Battery

[noeipo]

I have a 2020 gladiator It was getting hard to start and noticed a red dot and a lightning bolt. I went ahead and change the battery and starts up fine, but now it seems it’s in limp mode. Does anybody have any suggestions?

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[sharpsicle]

Did you test both batteries? And did you reset the IBS when you changed the battery?

 

[ShadowsPapa]

Did you charge the battery before installing it?
Did you know there are two batteries, and the other battery should be charged and checked, or just replaced since you already replaced the crank battery.

Always charge batteries before installing them.
While things are apart and you are swapping batteries, disconnect the IBS from the battery and ground cables and set it aside for around 15 minutes so it will reset and be ready for a new, fully charged battery.

If you let the positive cable clamp touch ground while changing the main battery you may have blown a section of the high current fuse array - that cable is HOT at all times even if off the main battery because it's connected to the smaller aux battery below.
So you have several things to look at............

 

[Puch]

I have a 2020 gladiator It was getting hard to start and noticed a red dot and a lightning bolt. I went ahead and change the battery and starts up fine, but now it seems it’s in limp mode. Does anybody have any suggestions?

Did you stand on one foot for several minutes followed by jump through a few hoops while playing circus music in the background?
Jeeps are special. I learned that quickly.
Welcome to the Jeep world!

 

[Gezer]

This will make ne feed old and stupid but the IBS what and where? I will be changing batteries soon and that sounds a fairly important step

 

[Lost1wing]

It is at your negative post on your main battery. It has a plastic connector on it. You will need to disconnect it while you change out your batteries. Be sure to charge your new batteries before you install them. Be careful not to touch any positive or negative cables to each other. The main ground is on your fender by the main battery. Don't be surprised to see sparks while disconnecting.

I do recommend searching IBS, "Charging batteries ", ESS, "fuse array". You will learn what others have done and how to avoid having issues.

I wish there was a sticky for more detailed instructions.

 

[noeipo]

Thanks I will give it a try ??

 

[Lost1wing]

What it does? Monitors the charge state of the batteries,. Your pcm can use this information to tell the "Smart" Alternator how the charge the batteries.

 

[Aj58]

I do recommend searching IBS, "Charging batteries ", ESS, "fuse array". You will learn what others have done and how to avoid having issues.

I wish there was a sticky for more detailed instructions.

I really wish there was a well written sticky post on this. There are so many battery posts here with so much information but all over the place.

 

[Lost1wing]

I really wish there was a well written sticky post on this. There are so many battery posts here with so much information but all over the place.

ShadowsPapa has an awesome write up.

 

[Aj58]

ShadowsPapa has an awesome write up.

What do we gotta do to get that stickied. He’s offered so much regarding electrical issues.

 

[ShadowsPapa]

Red arrow points to IBS.

It is at your negative post on your main battery. It has a plastic connector on it. You will need to disconnect it while you change out your batteries. Be sure to charge your new batteries before you install them. Be careful not to touch any positive or negative cables to each other. The main ground is on your fender by the main battery. Don't be surprised to see sparks while disconnecting.

I do recommend searching IBS, "Charging batteries ", ESS, "fuse array". You will learn what others have done and how to avoid having issues.

I wish there was a sticky for more detailed instructions.

Good tip - since some systems will always be drawing at least fractions of an amp, there may be a spark. The size will depend on how "awake" the truck is at the time.
When doing "battery related stuff", I leave the FOB in the house away from the truck (mins is not an attached garage so in the house means it's well away from the Jeep)

What do we gotta do to get that stickied. He’s offered so much regarding electrical issues.

There are at least two administrators - Jay is the one I'm aware of. I don't know if there are any "moderators" like some other forums have.

If it's like the forum I administer elsewhere, there's me - admin - and the co-owner of the forum who I have shared all administrative info and passwords with (the proverbial what if I'm hit by a bus thing) and we have multiple moderators who watch over things, move posts where they really should be if someone posts for sale stuff in the wanted area for example, or in extreme cases - remove posts or people.
I don't know the structure of this set of forums, ownership, whatever.

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