I believe it's the AC system resetting. Mine does it also. There's a way to reset the venting system on these rides. What I mean is..... if the selector ever gets stuck between say floor and face, there's a resetting procedure that can be done with a Star Scan. That is the self check that goes back to a default setting until it's cranked again. I'm 99.99% sure that's what it's doing.
Sound when turning off....any advice please?
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This sound is the 4wd actuator motor resetting into the neutral position. If you disconnect the motor the sound will go. This is a "good" sound for the Jeep as it means your 4wd system is working 
I guess my 4wd system doesnt work then.This is a "good" sound for the Jeep as it means your 4wd system is working
stealership actually took the time to figure this problem out
I took my WK1 into the stealership to figure this one out. The transmission guy was completely thrown off guard and any other mechanic I asked to have a look at said it sounds like death.
After a week, stealership called & said my transmission and transfercase were bad. They told me something internally in the TC was not working properly & was causing that crazy noise. They actually took the time to take it apart to figure it out b/c some other mechanic said that many others have complained about it too. They ended up replacing the TC & decided to rebuild my tranny too because they believed that any multitude of things internally could have caused it to go bad and that warranty covered it so they went right on ahead to avoid future problems. The mechanic told me the tranny was starting to die out cause the previous owner drove the hell out of it (this work was done a few days after I bought it).
TC replaced and transmission rebuilt, covered under warranty (( Drives better than ever & doesn't make the noise anymore.
I still have the work order if you'd like pics?
I took my WK1 into the stealership to figure this one out. The transmission guy was completely thrown off guard and any other mechanic I asked to have a look at said it sounds like death.
After a week, stealership called & said my transmission and transfercase were bad. They told me something internally in the TC was not working properly & was causing that crazy noise. They actually took the time to take it apart to figure it out b/c some other mechanic said that many others have complained about it too. They ended up replacing the TC & decided to rebuild my tranny too because they believed that any multitude of things internally could have caused it to go bad and that warranty covered it so they went right on ahead to avoid future problems. The mechanic told me the tranny was starting to die out cause the previous owner drove the hell out of it (this work was done a few days after I bought it).
TC replaced and transmission rebuilt, covered under warranty ((
Drives better than ever & doesn't make the noise anymore.I still have the work order if you'd like pics?
This sound is the 4wd actuator motor resetting into the neutral position. If you disconnect the motor the sound will go. This is a "good" sound for the Jeep as it means your 4wd system is working
I was told that this sound was NOT good, by several mechanics at stealership and other various local places. Read above^
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