What does service 4wd system mean on jeep grand cherokee

Q: What does service 4WD system mean?

The Service 4WD System message indicates a problem with the 4WD system that should be properly diagnosed and repaired. When the ignition key is turned from OFF-RUN-START and is released back to the RUN position after the vehicle starts, the 4WD warning light should go on for 1 to 2 seconds and then go out.

Q: How do you reset the service indicator on a Jeep Grand Cherokee 4WD?

Locate the button labeled STEP” in your Jeep Grand Cherokee. Press the STEP” button until you get to a menu screen that indicates how many miles you have left until service. Press and hold the RESET” button. The Perform Service” indicator should now be reset.

This is due to a number of things, so we need to start with checking for codes and finding out what is there.

Table of Contents Show

What does it mean when my Jeep says service 4WD system?
What does service 4WD system mean?
How do you reset the service indicator on a Jeep Grand Cherokee 4WD?
How do you turn off 4WD in Jeep Grand Cherokee?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Based on the codes we can make a better decision but the normal cause of this is the final drive control module is not able to shift the transfer case and it is not able to do it.

So, we need to check the voltage coming from the DTCM and find out if when it gets the switch input to shift that it is actually commanding the motor to come on.

Here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-check-wiring

Below you will find the wiring diagram that we need to use to test this.

Please let us know what questions you have, and we can go from there. Thanks

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Tuesday, December 7th, 2021 AT 4:28 PM

I was having the same issue and luckily mine seems to have gone away. I never replaced the transfer case motor that the dealer suggested I do. ~$1,000 and it was backordered anyhow. It's clear this issue should be addressed by Jeep and it has not been. Any simple google search can point you to tons of people having this issue, but the Jeep dealer acts like they have never had another customer with the same issue.

Separate things that I have done relatively recently that I will mention in case it sparks any ideas in your head. Caveat, all or none of these could be related but with the highly electronic and hard to diagnose issues, I feel nothing is too small to ignore.

I was having dead battery issues, it turns out there was an issue where my aftermarket brake controller was drawing power even when the vehicle was turned off. There was a fuse on the line that was connected directly to the battery and since then I have just pulled that fuse between times when I am towing anything.

I replaced the brake switch (the little button your pedal pushes to turn on your brake lights) twice actually. Not sure if it really needed to be replaced but I did it anyhow since the part was cheap enough and was throwing codes and the dealer told me replacement was needed, even after I replaced it (so I replaced it again in the rare event the first replacement was defective).

I have HID headlights and I've heard they can interfere with some electronics and generate strange issues. I replaced the ballasts powering them in the event one was defective.

Separately I keep getting intermittent error warning about to service the tire pressure monitoring system. I heard the batteries in the sensors that are on the valve stem of each of the tires go bad after 10-15 years and since my Jeep is an '06 Overland I went ahead and replaced them thinking that would resolve the issue and it didn't. The dealer doesn't know what is wrong and have advised me to ignore it. Very annoying when it sometimes flashes in orange on the dash when one of the tires incorrectly registers as very low or zero pressure and my passengers get alarmed.

I replaced my rear brake lights since one was slightly cracked and I was trying to diagnose my dead battery issue related to the brake controller. I figured if moisture from the cracked lens was leading to a short, replacing it was a good call. Separately I backed into my trash can in my driveway so the second lens got replaced at the same time.

Sometimes I feel I may be replacing parts prematurely but after pissing away hours researching online, and dropping the car off at the stealership, it is sometimes worth it to replace perfectly good parts to rule them out as a possible issue since they will likely need to be replaced eventually and also the dealer often does the same thing as they guess what is wrong and replace parts until something is fixed. After replacing parts and saying the issue did not go away they will insist the replaced part needed to be replaced anyhow.

Good luck! Oh and since my issue that you are currently having is resolved at the moment, I have tried to engage and disengage the 4WD system periodically. Somewhere online I read that doing so helps prevent it from getting "locked up".

What does it mean when my Jeep says service 4WD system?

But when the serv 4wd light is displayed, the Jeep will be in 2wd and unable to use 4wd. It might be a software issue or a bad or damaged sensor among other things.

What does service 4WD system mean?

The "Service 4WD System" message indicates a problem with the 4WD system that should be properly diagnosed and repaired. When the ignition key is turned from OFF-RUN-START and is released back to the RUN position after the vehicle starts, the 4WD warning light should go on for 1 to 2 seconds and then go out.

How do you reset the service indicator on a Jeep Grand Cherokee 4WD?

Locate the button labeled “STEP” in your Jeep Grand Cherokee. Press the “STEP” button until you get to a menu screen that indicates how many miles you have left until service. Press and hold the “RESET” button. The “Perform Service” indicator should now be reset.

How do you turn off 4WD in Jeep Grand Cherokee?

The indicator light should start to flash, and shifting is complete when the light becomes solid. To move from 4WD LOW to 4WD HI, with the vehicle running and a speed between 0 and 3 mph, shift into neutral, then push the “4WD LOW” button. The 4WD LOW light will turn off once it's done shifting.