Passive Entry Antenna Problem

[rflauto]

Hello group, since a month ago I have a problem in my Wrangler, when I try to start it tells me that it does not detect the key fob.

I have already tried with both keys and I have changed the battery. The key fob opens and closes the doors, but when I'm inside I can only start it by pressing the ignition button with the key.

I scanned it and it gave me this code: B1A74-13 (Input passive antenna 4: Open circuit).

I would like to know if anyone knows the location of the passive entry antennas inside the vehicle so I can check them.

Thank you very much in advance.

 

[jeeeep]

damn, that sucks.

one reason I dislike "electronic convenience" more shit= more problems

my guess is somewhere in the B pillar

 

[wayoflife]

I've had this problem before too on my old 2018 and for the life of me, could never really get it figured out. New batteries, different FOB, still had issues from time to time. If your Jeep is still under warranty, I would have your dealership give this a look.

 

[kevman65]

Something to check, because they seem to cause weird problems.

If you take your doors off then check every last pin in both front door connectors. If just one pin is out of place and cross connecting you can see some weird effects.

 

[rflauto]

damn, that sucks.

one reason I dislike "electronic convenience" more shit= more problems

my guess is somewhere in the B pillar

Thanks I will check

 

[rflauto]

I've had this problem before too on my old 2018 and for the life of me, could never really get it figured out. New batteries, different FOB, still had issues from time to time. If your Jeep is still under warranty, I would have your dealership give this a look.

Thank you, I think it will be the best

 

[rflauto]

Something to check, because they seem to cause weird problems.

If you take your doors off then check every last pin in both front door connectors. If just one pin is out of place and cross connecting you can see some weird effects.

thanks! I will check it

 

[cozdude]

I just left work but I can see if I can find any info on where the module is tomorrow

 

[rflauto]

I just left work but I can see if I can find any info on where the module is tomorrow

Thanks cozdude!

 

[cozdude]

Passive entry antenna 4 is located in the dash

 

[rflauto]

Passive entry antenna 4 is located in the dash View attachment 383368

View attachment 383369

Cozdude man, your are the best!

 

[rflauto]

Just to update you, after much research and with the help from all of you, specially Cozdude, I confirm that antenna number 4 is the defective one and the one behind the HVAC.

The color of the wires is the same as in the diagram.

I leave the diagram in case anyone needs the information.

Now I just have to wait for the part I ordered, replace it, and I hope to give you good news.

 

[rflauto]

Hello everyone, just to let you know that I was able to solve the problem by changing the antenna behind the HVAC.

Thank you all very much for your help. I leave the part number in case anyone needs it:

Passive Entry Antenna - Mopar (68068148AA)

https://store.mopar.com/oem-parts/mopar-passive-entry-antenna-68068148aa

 

[wayoflife]

awesome! Thank you for posting the update! I'm sure this will be helpful to a lot of people.

 

[DirtHeadDavis]

Another reason why I love my JK's traditional key.

Lol, good info to post up! I assume many others have or will have this issue.

 

[jeeeep]

Hello everyone, just to let you know that I was able to solve the problem by changing the antenna behind the HVAC.

Thank you all very much for your help. I leave the part number in case anyone needs it:

Passive Entry Antenna - Mopar (68068148AA)

https://store.mopar.com/oem-parts/mopar-passive-entry-antenna-68068148aa

was it easy to access?

 

[rflauto]

was it easy to access?

Yes, just remove the HVAC panel, then remove the two screws that hold the antenna and disconnect the antenna from the harness.

Then you connect the new one and the same steps in reverse and you're done.