Originally Posted by mln01

Thanks lordmorpheus, for reminding me to go look up the facts about how the ABS, etc. function when a fault is detected and the Three Amigos pay a visit.

The boys from south of the border don't necessarily indicate that your ABS is disabled.

I've attached RAVE pages 876-877. On 876 (70-23) it says that a shuttle valve switch fault is considered a "permanent fault," which remains illuminated until cleared and which means that if the OP's Amigos are intermittent he has a different problem. (Despite that I recall my Three Amigos being intermittent until I did the Option B bypass in January 2011 after my ABS Amigo indicated a shuttle valve switch problem.)

Page 877 (70-24) shows the default strategies that are employed when an ABS fault is detected. A shuttle valve switch fault (by far the most common based on forum traffic) disables the traction control and hill descent control, and degrades but does not disable ABS and electronic brake distribution.

There have been a lot of incorrect posts on this and other LR forums claiming that the Three Amigos mean that ABS is disabled. It is not in all cases. The table shows that ABS is disabled in four of the seven default strategies. And in all my years on this forum I have never, ever seen anything other than sensor faults and shuttle valve switch faults discussed.

So yes, Harrison, it's okay to drive your truck with the Three Amigos lit up.

Originally Posted by mln01

(Despite that I recall my Three Amigos being intermittent until I did the Option B bypass in January 2011 after my ABS Amigo indicated a shuttle valve switch problem.)