Possessed 08 Kk

[AFT2008KK]

Hi All. Advice needed to avoid chasing my tail in circles. 2008 Kk limited 128k became posessed a few days back.

While driving around town, wipers on / off automatically, dash lights flashing on/off like Xmas tree, tach and speedo drop to zero and then kick back on, and radio kicks on & off all while driving.

Now running fine. No gremlins present

Alternator was replaced a week prior. Battery (interstate) installed 1/2023. Aftermarket radio w/ canbus adapter installed 1/2023.

Pulled codes. See pics. Codes cleared, and ill see what returns. FYI no check engine light on.

Any thoughts or tips / tricks? A faulty BCM or does TIPM need refurbishing?

Thanks in advance.

 

[lfhoward]

These Jeeps do all kinds of random things if the voltage is low. I would unhook the battery to reset the computer again, and get the battery tested. It is possible that the battery is not holding full power since the alternator died and stressed it out.

 

[AFT2008KK]

These Jeeps do all kinds of random things if the voltage is low. I would unhook the battery to reset the computer again, and get the battery tested. It is possible that the battery is not holding full power since the alternator died and stressed it out.

Good idea. I haven’t thought of that assuming battery is relatively new.

 

[klc]

It might also be a bad ground.

 

[john e denson]

I replaced my alternator with one from discount auto and it did many weird things shortly after installing. It came from Mexico and the label said it was the right one. They replaced it and my problems went away. I think the label was wrong or it was defective. It still cranked up so I thought it was overcharging the battery. This was 2005 and I think they had different amperage rating on some of the alternators.

 

[AFT2008KK]

I replaced my alternator with one from discount auto and it did many weird things shortly after installing. It came from Mexico and the label said it was the right one. They replaced it and my problems went away. I think the label was wrong or it was defective. It still cranked up so I thought it was overcharging the battery. This was 2005 and I think they had different amperage rating on some of the alternators.

The new one is a new Duralast one from AZ that i had a local shop ive used 100s of times before put in. It is a “new” from Malaysia unit. It tested good this morning via scanner. Will check x 2.

 

[AFT2008KK]

It might also be a bad ground.

That was my 1st thought too. Every “on line” schematic shows some, not all connections and grounds. Going quadrant by quadrant.

 

[AFT2008KK]

Monday evening update. New battery under warranty, new alternator + 250 miles. No sign of Mowgli or pals having returned yet. (Fingers crossed).

Appreciate the suggestions.

 

[AFT2008KK]

Hey gang. New Gremlins during a rainy day. Compass goes away. Wipers go on and wont respond to switch. Radio volume jumps to 100. Any ideas? Alternator? Or some sensor being wet? Will check for codes once rain stops.

 

[lfhoward]

Do the door locks function as they should? Wipers & door locks both fritzing out at the same time can be a symptom of a bad TIPM (totally integrated power module - the fancy fuse box under the hood). I don’t want to jump to that conclusion because it is an expensive part, but it is something to be aware of.

 

[AFT2008KK]

Do the door locks function as they should? Wipers & door locks both fritzing out at the same time can be a symptom of a bad TIPM (totally integrated power module - the fancy fuse box under the hood). I don’t want to jump to that conclusion because it is an expensive part, but it is something to be aware of.

Thought the same. It was intermittent and now back to normal?? Time will tell

 

[john e denson]

I got the wrong alternator from discount auto and my jeep did some crazy stuff even when it was turned off. people would tell me my jeep horn was going off with no one in it among other things. I would check if it is overcharging.

 

[AFT2008KK]

I got the wrong alternator from discount auto and my jeep did some crazy stuff even when it was turned off. people would tell me my jeep horn was going off with no one in it among other things. I would check if it is overcharging.

Will do. Replaced it last Summer. No turn signals too

 

[AFT2008KK]

Alternator & battery check out. Plus no change after “hard reset”. So rabbit hole on internet is leading me to think tipm failing. Anyone have any experience with replacement units? Dorman has one via Autozone etc. plus other shops like MAKS (here in Socal) have rebuilts. Thoughts?

Symptoms recap: no high beams. No turn signals, wipers always on, digital compas flashes on / off, and radio volume jumped to 11 (Spinal Tap reference).

 

[lfhoward]

I will say I have had my TIPM out several times over the years to install upper control arms. It is intimidating at first but it is really not that difficult a job to remove and replace. The hardest part is figuring out how the wiring pigtails come apart without breaking them. But after that it is a cinch.

If you do get a TIPM from somewhere else, I have read that it is not necessary to have it programmed to your VIN. You should, however, get one that has the same options as your jeep has, so that everything works as expected. For example, if you have fog lights and cruise control, be sure that the donor Jeep has them too. Disclaimer: I am only 90% sure of what I just stated. So be sure to do your own research too.

 

[AFT2008KK]

I will say I have had my TIPM out several times over the years to install upper control arms. It is intimidating at first but it is really not that difficult a job to remove and replace. The hardest part is figuring out how the wiring pigtails come apart without breaking them. But after that it is a cinch.

If you do get a TIPM from somewhere else, I have read that it is not necessary to have it programmed to your VIN. You should, however, get one that has the same options as your jeep has, so that everything works remoas expected. For example, if you have fog lights and cruise control, be sure that the donor Jeep has them too. Disclaimer: I am only 90% sure of what I just stated. So be sure to do your own research too.

 

[KJowner]

I'd guess a bad earth somewhere that's getting wet.

 

[AFT2008KK]

Remove and replacement doesn’t worry me. Im hoping when it dries out it will magically resolve?

It is odd. It did occur when driving in the rain. There has been a constant rain for a while here in SO-Cal. So before i drop $$ i want to make sure.

No CELs. No access to pro level scanner yet. And no certain way to diagnosis “concretely” has been found.

Next few days will be dry. Maybe Gremlins will go away.

 

[AFT2008KK]

Gremlins maybe gone. Hopefully for good. Reman Dorman TIPM installed. @lfhoward was right. 30 minutes to r/r just because plastic harnesses are feeling brittle after 16 years.

 

[lfhoward]

Gremlins maybe gone. Hopefully for good. Reman Dorman TIPM installed. @lfhoward was right. 30 minutes to r/r just because plastic harnesses are feeling brittle after 16 years.

Glad to hear it is working as it should now.

How much does a remanned TIPM go for these days?