Service 4WD Message

[Muddog]

Message “Service 4WD” just popped up on my JL Sahara dashboard.

Going to call dealership Monday morning.
Not even 2,000 miles on it yet. Does anyone know what may have caused this alert?

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[Doug]

I have 1800 miles on my JLUR and starting yesterday mine did the same thing, but is tied in with ABS and Traction control codes as well. It has been randomly coming on and off as I drive it without anything seeming to be actual wrong with the Jeep. It does say 4WD is temporarily unavailable when I start it, so there’s that annoyance as well. I have to travel for the next couple of weeks with my job and cant take it to the dealership until then, so hopefully someone will have an answer as I have seen a few others with the same problem but no resolution.

 

[Saejin]

It’s your Jeep telling you you haven’t taken it off-road and it’s concerned it’ll never see dirt or rocks, etc.

Just kidding...keep us posted. 700 miles on mine so far with no issues.

 

[WXman]

I wonder if that stupid FAD system is acting up? There was a very good reason that Chrysler ditched that system back in the 1990s.

 

[Merlin28]

Do you have “full time 4wd” bullshit transfer case option? I hope not...

 

[Muddog]

Thanks for your responses. I’ll keep you guys undated. Probably bring it in to the dealership tomorrow or Tuesday.

I have the 4 Wheel Auto option. Which I have left it on since I live in Chicago and weather has been cruddy.

 

[Merlin28]

Thanks for your responses. I’ll keep you guys undated. Probably bring it in to the dealership tomorrow or Tuesday.

I have the 4 Wheel Auto option. Which I have left it on since I live in Chicago and weather has been cruddy.

Oh boy this what I was worried about. Those clutched t-cases are a pain in the ass. Keep us posted man I was VERY suspicious of this option. Could be problematic I feel and I would always advise someone to get standard t case...

 

[xpsruler]

Open the fuse box under the hood and make sure all fuses are seated fully. It may sound silly but when I first got my Cherokee Trailhawk I had a similar message in reference to the start stop system. I came across about 4 fuses that were not fully seated and pushing them in solved it.

 

[That One Guy]

I wonder if that stupid FAD system is acting up? There was a very good reason that Chrysler ditched that system back in the 1990s.

Do they have front axle disconnect in the part time 4WD JLs? I hope not.

 

[Doug]

Good Idea on the fuses. Mine is a Rubicon so doesn’t have the 4WD auto of his Sahara. The first thought that came to mind for me was the FAD as well.

 

[WXman]

Do they have front axle disconnect in the part time 4WD JLs? I hope not.

Yep they sure do. It's a big device on the axle tube, passenger side. I haven't investigated how it works yet...but I hope it's electric and not vacuum or gas like the old systems of the 80s and 90s.

 

[Merlin28]

Yep they sure do. It's a big device on the axle tube, passenger side. I haven't investigated how it works yet...but I hope it's electric and not vacuum or gas like the old systems of the 80s and 90s.

It’s electric similar to the lockers

 

[JeepCares]

Message “Service 4WD” just popped up on my JL Sahara dashboard.
Going to call dealership Monday morning.
Not even 2,000 miles on it yet. Does anyone know what may have caused this alert?

I have 1800 miles on my JLUR and starting yesterday mine did the same thing, but is tied in with ABS and Traction control codes as well. It has been randomly coming on and off as I drive it without anything seeming to be actual wrong with the Jeep. It does say 4WD is temporarily unavailable when I start it, so there’s that annoyance as well. I have to travel for the next couple of weeks with my job and cant take it to the dealership until then, so hopefully someone will have an answer as I have seen a few others with the same problem but no resolution.

Hi Muddog and Doug,
We're glad you've both reached out to us with this. We would like to make sure that we have this documented and offer out assistance while you are working with your dealers. Please send us a private message with additional details.
Julie
Jeep Social Care Specialist

 

[Doug]

I did a PM on Monday and didn’t hear anything back.

 

[Jennmack]

Was there ever a resolution on this? My JLs light was on this morning and dealer wants to see it today. I have 7000 Miles on mine.

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