Sponsored

Help with JSCAN LED foglight troubleshooting

RCSDJeep

Well-Known Member
First Name
Matt
Joined
Jul 23, 2021
Threads
7
Messages
81
Reaction score
485
Location
Rapid City, SD
Website
youtube.com
Vehicle(s)
2023 JLURXR 3.6L
Last week I swapped out my Rubicon plastic bumper with halogen foglights on my 2021 JLUR with the halogen light group for a nearly new Rubicon Steel Bumper with LED foglights knowing that I would need to reprogram the ECU to accept the LED foglights with either a JSCAN or Tazer. After the installation of my bumper I did have my foglight selector in the on position and the LED foglights did come on. However, they never came on again after that, which is what I expected from reading about the issue on the forum. My dealership actually offered to update my ECU this week since I was having a service performed, but they couldn't get the foglights to come on either. I just chalked it up to them not knowing what they were doing and figured I would just do it myself through JSCAN. I just received the cable and BT adapter to connect to JSCAN today so I figured my ECU just needed updating to the correct settings. Inside my JSCAN adaptations I see there are 3 LED foglight adaptations (see pic). I changed the front foglight setting to Active. Still no foglights. I noticed the 2 LED rear foglight adaptations at the bottom of the menu. Surprisingly the first adaptation says active and the second one says deactivated for rear LED foglights...I deactivated the first one, but it keeps automatically reactivating this option. Not sure why? Has anyone successfully updated their halogen foglights to LED foglights on a 2021 using JSCAN? I am receiving 12V at the foglight connector, but is there a way to test the LED foglights themselves? I can't imagine they burned out after being turned on once using halogen settings. Or should I try to do the same process with a Tazer? I just didn't want to buy a Tazer, or new foglights, if I didn't have to. Thanks in advance!

Jeep Wrangler JL Help with JSCAN LED foglight troubleshooting Screenshot_20220430-171034_OBD JScan
Sponsored

 

BUC(ret)

Active Member
First Name
Jason
Joined
Jan 27, 2023
Threads
3
Messages
29
Reaction score
64
Location
Central PA
Vehicle(s)
25 Grand Cherokee, 23 JL Rubicon
I just had the same issue happen to me, but used a tazer to change the settings and they are still not working. following.
 
OP
OP
RCSDJeep

RCSDJeep

Well-Known Member
First Name
Matt
Joined
Jul 23, 2021
Threads
7
Messages
81
Reaction score
485
Location
Rapid City, SD
Website
youtube.com
Vehicle(s)
2023 JLURXR 3.6L
I never was able to find a solution. Ended up putting halogen fog lights back in. Sorry I couldn’t be of more assistance.
 

Comtech392

Active Member
First Name
John
Joined
Sep 21, 2021
Threads
0
Messages
43
Reaction score
131
Location
California
Vehicle(s)
1989 XJ 2 door & 2021 Sting Grey 392 XR
Occupation
Technician
I have a 2021 that has factory LED fogs Steel bumper , I tried swapping in some KC flex era fogs and they turn on but flash 3 times and turn off and won't come back on until next key cycle . its like the computer doesn't recognize the lights , also no fix as of yet and KC is trying to figure it out on their end since its supposed to be plug and play . put the stocks back in and everything works fine
Sponsored

 
 







Top