So I have this Terrain Management fault issue and I've read about half this thread but I'm not finding many folks posting solutions.
My issue first appeared last winter (2014/15).
So I took my vehicle back to the dealer ( third trip) and they found a TSB 12-08-09, which reprogrammed the ABS Module. I will re-post if the fault shows up again.
I took my 2011 Limited into the dealer this last June 2015, and of course they couldn't reproduce, but they found this same TSB and reprogrammed the ABS module.
But my issue has returned with the colder weather. In fact, I don't think I recall this issue coming up in warmer summer weather at all.
My extended warranty has expired but I'll take it back to the dealer to see if they will still cover it, since the issue was first reported during the warranty coverage period.
For this to make any sense you will probably need to read my
previous post.
It has been about 7k-8k miles since the ETB was replaced on my 2012 Explorer. I have not had one TMS fault condition since that time. I am not a mechanic so take it for what it's worth but I am confident that MY Ex TMS faults were related to the ETB. A gradual decline causing intermittent TMS faults and ultimately resulting in a more significant failure of the ETB.
Could other issues cause intermittent TMS fault lights? Sure, but as you know from reading my previous post, there is an extended warranty of this ETB which inexplicably excludes the same part installed in Explorers. IMO, if you still have the original it is likely to fail. If you are getting intermittent TMS fault lights and you are anywhere near 40k it is worth your while to have this checked out.
Thank you PEXOB2, your posts have been the most helpful!
So far I've compiled the following possible causes when you see the Terrain Management Fault, Service AdvanceTrac, and Collision Warning Unavailable messages, and you have two orange lights in the bottom right of the instrument cluster, and your TMS dial goes inoperative based on my browsing of this thread:
* ABS module needs reprogramming to current software versions
* Some kind of metal or brake dust in some kind of sensor
* Electronic Throttle Body (ETB) needs to be replaced
If the ETB is sticking and causing the intermittent issue, I wonder if I could make an attempt at cleaning it with throttle body cleaner and see if that clears the issue... I may attempt this next weekend when I change the squeaky accessory belt