Problems in 4x4

Anibal

Active Member
First Name
Anibal
Joined
Nov 19, 2020
Messages
39
Reaction score
7
Location
Brasília, Brasil
Vehicle(s)
Wrangler Sahara 2.0 2019
My Sahara 2019 presents messages of need for service in 4W after already running with the 4x4 on the offroad and at times fails to accuse the 4x4. At other times unscrew the 4x4 and step to the 4x2 and yet the 4x4 remains engaged and with the message on the panel of "Serv 4W". The concessionaire here in Brazil has not yet been able to identify the cause. Can anyone give any indication of what might be going on?
Advertisement

 

chevymitchell

Well-Known Member
First Name
Shawn
Joined
Feb 18, 2018
Messages
1,966
Reaction score
3,976
Location
K-Vegas, NC
Vehicle(s)
2019 JLUR (Pain Train)
Occupation
Super Nerd
My Sahara 2019 presents messages of need for service in 4W after already running with the 4x4 on the offroad and at times fails to accuse the 4x4. At other times unscrew the 4x4 and step to the 4x2 and yet the 4x4 remains engaged and with the message on the panel of "Serv 4W". The concessionaire here in Brazil has not yet been able to identify the cause. Can anyone give any indication of what might be going on?
Check to make sure your FAD connector is all the way on and that you don't have any bent pins.
 
OP
OP
Anibal

Anibal

Active Member
First Name
Anibal
Joined
Nov 19, 2020
Messages
39
Reaction score
7
Location
Brasília, Brasil
Vehicle(s)
Wrangler Sahara 2.0 2019
When I'm in 4x4 Auto the panel displays the message and from then on I can't engage the 4x4 Part Time and neither low.

20210427_182516.jpg
 
OP
OP
Anibal

Anibal

Active Member
First Name
Anibal
Joined
Nov 19, 2020
Messages
39
Reaction score
7
Location
Brasília, Brasil
Vehicle(s)
Wrangler Sahara 2.0 2019
Check to make sure your FAD connector is all the way on and that you don't have any bent pins.
What does the acronym for this FAD connector mean? Where's that connector? In the Vehicle Manual I didn't find that acronym.
 

chevymitchell

Well-Known Member
First Name
Shawn
Joined
Feb 18, 2018
Messages
1,966
Reaction score
3,976
Location
K-Vegas, NC
Vehicle(s)
2019 JLUR (Pain Train)
Occupation
Super Nerd
It stands for "Front Axle Disconnect".

There is a motor on the front axle tube, on the passenger side.

You'll see a connector coming off of the back of it.

Check this connector.
 
OP
OP
Anibal

Anibal

Active Member
First Name
Anibal
Joined
Nov 19, 2020
Messages
39
Reaction score
7
Location
Brasília, Brasil
Vehicle(s)
Wrangler Sahara 2.0 2019
It stands for "Front Axle Disconnect".

There is a motor on the front axle tube, on the passenger side.

You'll see a connector coming off of the back of it.

Check this connector.
Thank you. I'm going to the dealership tomorrow.
 

mwilk012

Well-Known Member
Joined
Mar 10, 2018
Messages
4,420
Reaction score
3,970
Location
Oklahoma
Vehicle(s)
2018 Ocean Blue JLU Rubicon
How many km does the factory warranty cover for you?
 
OP
OP
Anibal

Anibal

Active Member
First Name
Anibal
Joined
Nov 19, 2020
Messages
39
Reaction score
7
Location
Brasília, Brasil
Vehicle(s)
Wrangler Sahara 2.0 2019
It stands for "Front Axle Disconnect".

There is a motor on the front axle tube, on the passenger side.

You'll see a connector coming off of the back of it.

Check this connector.

The aforementioned problem had already existed and the concessionaire had changed the small engine located externally in the transfer box as a solution. On last week's Off Road ride, the first after the change of the aforementioned engine, the problem came to repeat itself. Today the connector pins have been checked and they are in perfect condition.
 
OP
OP
Anibal

Anibal

Active Member
First Name
Anibal
Joined
Nov 19, 2020
Messages
39
Reaction score
7
Location
Brasília, Brasil
Vehicle(s)
Wrangler Sahara 2.0 2019
Attachment, forwards photo of the dealer's scanner record. This problem presents itself intermittently. What could be another factor as a cause of the problem?

20210503_104059.jpg
 

Reinen

Well-Known Member
Joined
Jan 10, 2021
Messages
736
Reaction score
1,510
Location
Utah
Vehicle(s)
2021 Jeep Wrangler JL Rubicon
The aforementioned problem had already existed and the concessionaire had changed the small engine located externally in the transfer box as a solution. On last week's Off Road ride, the first after the change of the aforementioned engine, the problem came to repeat itself. Today the connector pins have been checked and they are in perfect condition.
They're in the right neighborhood but it could be something else beside the transfer box motor. The error code is a short circuit detection which can be difficult to track down, especially if it's intermittent. Keep taking it back. They should get it eventually.
 

Maverick909

Well-Known Member
First Name
Brian
Joined
Jan 15, 2019
Messages
1,761
Reaction score
1,872
Location
SoCal
Vehicle(s)
2018 JLU Sporticon, 1976 GMC K15 Lifted on 35's
you have a bad connection or shorted. did you happen to do some deep water crossings before this happened the every first time? could have gotten water in a connection point and shorted the circuit. all those codes go back to the same module
 
OP
OP
Anibal

Anibal

Active Member
First Name
Anibal
Joined
Nov 19, 2020
Messages
39
Reaction score
7
Location
Brasília, Brasil
Vehicle(s)
Wrangler Sahara 2.0 2019
you have a bad connection or shorted. did you happen to do some deep water crossings before this happened the every first time? could have gotten water in a connection point and shorted the circuit. all those codes go back to the same module
I did not make any crossing in water that drowned the stirrups of the vehicle.
 

mwilk012

Well-Known Member
Joined
Mar 10, 2018
Messages
4,420
Reaction score
3,970
Location
Oklahoma
Vehicle(s)
2018 Ocean Blue JLU Rubicon
Bad connection at the transfer case or bad transfer case shift motor. This is why people pass on the full time 4WD.
 
Advertisement

PSC Motorsports
 
Advertisement
Top