So we have owned this Commander for a year and a half, in the year or so leading up to our purchase from previous owner his dealer had addressed the "service 4WD system" code by flashing with the N23 and later the P73 updates, within a month of the last update the t-case actuator was replaced and that was about a month before we purchased the Jeep. The previous owner was open about the issue and I have invoices documenting the fixes mentioned.
All has been fine since we took ownership until yesterday when the "service" light came on. I have tried to #23 fuse removal to no avail.
My question is, do these vehicles have a history of eating t-case actuators after these flashes and could I need a new actuator just over a year since the last one was replaced? I have read this thread, but did not see anything definitive regarding the reliability of the actuator fix:
transfer case problem??
Will a re-flash possibly help?
You should not need a new transfer case actuator motor a year after replacing it.
I also know there is another actuator motor (other than the one on the transfer case) somewhere in the 4WD system that is also involved in engaging the 4WD system. It could be that this other actuator motor may have gone bad.
What you are calling a re-flash, is actually reprogramming the Final Drive Control Module otherwise known as P73. The P73 campaign is for Commanders with the the Quadra-Trac II & Quadra-Drive II 4WD systems which both use the NV245
There is a very informative thread about it here:
Chrysler/ Jeep P73 Recall
I'm also attaching the actual P73 service campaign notice at the bottom of this post.
I have read about some people having the reprogramming done 3 times consecutively - but it shouldn't need to be done like that if it's done properly the first time.
aloha..newbie with first question
Originally Posted by grumpyscosmos
I got it flashed 3 and cleared 3 times consecutively day before yesterday...And its working perfect, see how long it holds..
I had my transfer case actuator motor replaced 2 years ago and I also had the P73 campaign completed about 6 months after that.
I haven't had any problems since.
Here is another very informative thread on the subject:
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