Weird Electrical Issues While Offroading

[Dos704]

(2020 JT Rubicon 3.6, 106k miles. Aux battery is fully deleted.)

I experienced some strange electrical-related issues while off-roading last weekend. On the way to the trail, while driving on the freeway, the “Service Brake System” warning would briefly flash on the center screen. This happened several times during the drive.

While on the trail, I had the A/C and radio running. Several times, the blower motor would suddenly cut out and stop blowing air, and at the same time, the radio volume would stop. In some instances, both would automatically come back on after a split second. A couple of times, I had to turn the fan dial and adjust the volume knob before they would come back on, but they always resumed functioning.

The last issue occurred while I was stopped on the trail. The “D” for Drive on the PRNDL display started flashing, and I had to shift into Neutral and then back into Drive to get it to stop flashing.

I have never experienced any of these issues before and am not sure if they are all related. I would appreciate any thoughts on what could be causing these issues or if there is anything specific I should have checked. I have had no issues with the vehicle during my commute to work since then.

Thank you,

Sponsored

 

[DylanM]

I'd start simple, pull the PDC cover off and push down on everything to make sure it's all properly seated/connected. There've been a number of people that noted finding the fuses, relays, and even the PDC itself not fully seated from the factory.

 

[shooterrex]

Also remove the glove box and push in all the connections on the canbus. That's where all my warning lights came from.

 

[Roger2486]

Had a similar experience on a recent trip in Moab... dash lights galore on the trails on and off intermittently. Did the above and seemed to remedy all. JT didn't care for my trip pace with constant vibrations, being off camber and high rpm's at times. all the best!

 

[tysongladiator]

You've been given a few great suggestions as to where to start checking. I'd like to add checking the battery terminal posts. I had a similar issue. Everything seemed to be connected properly and connections were tight. Until I gave the battery terminals a little tug and I pulled the terminal from the post, even though it was tight. Even though the dealership said to fix it with a screw, I bought a shim from the auto parts store and it was good to go.

Sponsored