# 2006 grand cherokee.. service four wheel drive system

**URL:** <https://community.cartalk.com/t/2006-grand-cherokee-service-four-wheel-drive-system/64011>\
**Category:** Maintenance/Repairs\
**Created:** [April 24, 2011, 3:02am UTC](https://community.cartalk.com/t/2006-grand-cherokee-service-four-wheel-drive-system/64011 "2011-04-24T03:02:13Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![kazmontana](https://avatars.discourse-cdn.com/v4/letter/k/77aa72/32.png) [@kazmontana](https://community.cartalk.com/u/kazmontana)\
**Post date:** [April 24, 2011, 3:02am UTC](https://community.cartalk.com/t/2006-grand-cherokee-service-four-wheel-drive-system/64011/1 "2011-04-24T03:02:13Z")

</div>

the light on my dash just came on, what does this mean?

---

<div class="post-metadata">

**Author:** ![andrew\_j](https://avatars.discourse-cdn.com/v4/letter/a/91b2a8/32.png) [@andrew\_j](https://community.cartalk.com/u/andrew_j)\
**Post date:** [April 24, 2011, 11:59am UTC](https://community.cartalk.com/t/2006-grand-cherokee-service-four-wheel-drive-system/64011/2 "2011-04-24T11:59:32Z")

</div>

Fault detected and you need to get the codes scanned at a mechanic who can read/interpret likely specific Jeep computer codes.

---

<div class="post-metadata">

**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [April 24, 2011, 5:06pm UTC](https://community.cartalk.com/t/2006-grand-cherokee-service-four-wheel-drive-system/64011/3 "2011-04-24T17:06:13Z")

</div>

The warning message indicates a fault is detected in the Final Drive Control Module (transfer case control module). However there is a software update to address “erroneous fault warning”.  
[http://www.wkjeeps.com/tsb/tsb\_wk\_2101406a.pdf](http://www.wkjeeps.com/tsb/tsb_wk_2101406a.pdf)

---

<div class="post-metadata">

**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\
**Post date:** [April 24, 2011, 5:22pm UTC](https://community.cartalk.com/t/2006-grand-cherokee-service-four-wheel-drive-system/64011/4 "2011-04-24T17:22:34Z")

</div>

Remember when the transfer-case control module was the drivers right hand?? What was wrong with THAT system?? It NEVER failed…