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Have you checked the rear diff module,it i located under the drivers side rear seat...or broken wires from module to rear diff motor ,as soon as the weather gets better ,im checking the rear diff module,....
Did you test your old diff motor?
Was it turning ,working,?

View attachment 239627
Thank you for your response

how i check the new rear diff module?
the motor is working but loose
all electrical wire checked and it is good.
 

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Hi guys. Had the same issue, service 4wd light comes on after 5 min drive. Clicking sound from underneath, ( can hear with open window). Took to the jeep service center. Transfer control module has been raplaced. Problem solved.
Grand Cherokee WK2 , 2014
72k
I have same issue with service 4 wheel drive system message, and warning indicator on dash panel. It looks like a vehicle skidding. Stays lit solid when it comes on. It’s a 2015 Jeep Grand Cherokee Limited with 40,300 miles. What the heck is going on with these vehicles? In researching I have found a number of these jeeps (different years) with similar problems, and they seem to be occurring around the time extended warranties expire. Mine is 7 years/60K. Fortunately I still have a little over 5 months and am well below the 60K. My dealer is also having trouble pinpointing the trouble.
 

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I have same issue with service 4 wheel drive system message, and warning indicator on dash panel. It looks like a vehicle skidding. Stays lit solid when it comes on. It’s a 2015 Jeep Grand Cherokee Limited with 40,300 miles. What the heck is going on with these vehicles? In researching I have found a number of these jeeps (different years) with similar problems, and they seem to be occurring around the time extended warranties expire. Mine is 7 years/60K. Fortunately I still have a little over 5 months and am well below the 60K. My dealer is also having trouble pinpointing the trouble.
Most likely your rear diff motor or rear diff module,what are the codes?
 

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Hey everyone!

I'm in a similar situation and have been for just over a year now.

I drive a 2015 Grand Cherokee Summit with 72,000km and just before winter 2020 I got the message of needing to service 4 wheel drive. Mind you, I was only a couple months out of warranty and they wouldn't help with the cost.
I tried my cheap OBII reader and it gave me a generic U04-3-0 code.
I brought it to my friend who is a mechanic for Alfa Romero/Ferrari and he recommended I go see his friend at the Jeep dealer.

I did.

After him scanning my vehicle he mentioned I needed a new transfer case motor and that my friend can do the job to save on cost but would need to bring it back to Jeep to reprogram it. He mentioned there being no harm to the vehicle if left not repaired.

And to mention, I don't hear any of the clicking noise that most of you are hearing.

My friend at the time stopped taking side clients due to personal reasons so I've been holding off on doing this.

My husband is great with cars and finally wants to get around to replacing it himself.

I also want to mention that when I changed my 2 front tires and got an alignment done, the message did not come back on for multiple days.

I guess my question is, If I replace the transfer case motor, does this motor really need to be reprogrammed by Jeep?

Thanks!
 

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2014 Summit 5.7 4wd 20" tires swapped to 18", added all skid plates
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Hey everyone!

I'm in a similar situation and have been for just over a year now.

I drive a 2015 Grand Cherokee Summit with 72,000km and just before winter 2020 I got the message of needing to service 4 wheel drive. Mind you, I was only a couple months out of warranty and they wouldn't help with the cost.
I tried my cheap OBII reader and it gave me a generic U04-3-0 code.
I brought it to my friend who is a mechanic for Alfa Romero/Ferrari and he recommended I go see his friend at the Jeep dealer.

I did.

After him scanning my vehicle he mentioned I needed a new transfer case motor and that my friend can do the job to save on cost but would need to bring it back to Jeep to reprogram it. He mentioned there being no harm to the vehicle if left not repaired.

And to mention, I don't hear any of the clicking noise that most of you are hearing.

My friend at the time stopped taking side clients due to personal reasons so I've been holding off on doing this.

My husband is great with cars and finally wants to get around to replacing it himself.

I also want to mention that when I changed my 2 front tires and got an alignment done, the message did not come back on for multiple days.

I guess my question is, If I replace the transfer case motor, does this motor really need to be reprogrammed by Jeep?

Thanks!
I looked thru the repair manual and the page for shift motor replacement is shown below. It says nothing about reprogramming anything. No guarantee it's not needed but you'd think it would be mentioned.

Font Parallel Engineering Auto part Technical drawing
 

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367 Posts
Under the drivers side rear seat.
Update
Orginal Mopar rear diff motor installed,but before that thoroughly all wires to rear diff,modules,transfer case,transfercase motor ,module,all checked good,still Fcw not working,Cruise control not working,Traction control light lit on cluster,& of course Service 4wheel drive message poping up on startafter about 20 seconds,so here comes the good part ,rear diff is bad ,rear diff motor not comunicating with rear diff,so i bought a used rrar diff 2017,my Summit is 2015 Eco D.
68184737AB
Its at the dealer 400€ for labor
700€ for the diff
Oh yes ,forgot the labor charge for checking the whole vehicle 330€
Automotive tire Motor vehicle Bumper Font Rectangle
Motor vehicle Bumper Vehicle registration plate Font Gas
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Wheel Automotive tire Rim Tire Spoke
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Under the drivers side rear seat.
Update
Orginal Mopar rear diff motor installed,but before that thoroughly all wires to rear diff,modules,transfer case,transfercase motor ,module,all checked good,still Fcw not working,Cruise control not working,Traction control light lit on cluster,& of course Service 4wheel drive message poping up on startafter about 20 seconds,so here comes the good part ,rear diff is bad ,rear diff motor not comunicating with rear diff,so i bought a used rrar diff 2017,my Summit is 2015 Eco D.
68184737AB
Its at the dealer 400€ for labor
700€ for the diff
Oh yes ,forgot the labor charge for checking the whole vehicle 330€
View attachment 240502 View attachment 240503 View attachment 240504 View attachment 240505 View attachment 240506 View attachment 240507 View attachment 240508
I looked under the rear seat or is it under the carpet under the seat figured I’d check that before replacing the diff motor it’s hard to find the parts in Canada for some what of a descent price how did you figure out the diff was shot too
 

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I looked under the rear seat or is it under the carpet under the seat figured I’d check that before replacing the diff motor it’s hard to find the parts in Canada for some what of a descent price how did you figure out the diff was shot too
Only the diff is shot,as i wrote,dealer did a complete check of modules ,motors,& broken ,ground wires(harness)
If its not under seat,its under the carpet
 

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I have a question...not sure if there is a specific thread line...but here goes.

At ~ 72K My first servicing (fluid change) for the transfer case (drain & fill), front & rear differentials (drain & fill), and AWD (drain & fill...don't know exact details...chime in to fill my knowledge gap), and transmission (drain & fill, new pan & filter too) were completed. Replaced all fluids with AMSOIL products and have had not issues thus far.

I am now approaching ~129K and am preparing to conduct a repeat transmission service (since ZF has made a change to FMC's recommendation of 100K mile service down to 50-75K).

The question is should this fluid change also include the transfer case, front & rear differentials, and AWD system... I have not found a specific guidance renfrencing.

Any guidance, insight, input is welcomed.
 

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367 Posts
I have a question...not sure if there is a specific thread line...but here goes.

At ~ 72K My first servicing (fluid change) for the transfer case (drain & fill), front & rear differentials (drain & fill), and AWD (drain & fill...don't know exact details...chime in to fill my knowledge gap), and transmission (drain & fill, new pan & filter too) were completed. Replaced all fluids with AMSOIL products and have had not issues thus far.

I am now approaching ~129K and am preparing to conduct a repeat transmission service (since ZF has made a change to FMC's recommendation of 100K mile service down to 50-75K).

The question is should this fluid change also include the transfer case, front & rear differentials, and AWD system... I have not found a specific guidance renfrencing.

Any guidance, insight, input is welcomed.
Are those km or miles?
 
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