New here, with a suspension question

[CaseyShows]

For the first time, the other night the RED light came on and a warning saying that cannot exceed 30mph showed on the display and the truck aired out to the bump stops and the selector knob was inactive. After getting to a safe stopping point was able to turn the truck off and restart and all went back to normal. For 2 days no problem and in the last 3 days it has become more prevalent. Where should I start?


Thanks, Casey

 

[tlt]

Did it occur in stop/go traffic? Brake Light switch and Brake light bulbs are always a good place to start.

 

[CaseyShows]

Just once it happened at a stop sighn, others were at highway speeds

 

[bbyer]

Wheel alignment?

Is your steering wheel straight ahead when the vehicle is driving on a straight road? If not, the steering wheel sensor sends signals that says the 3 is turning, the yaw sensors say it is not; the computers get confused and go into safe mode - you are on the stops so to speak.

Do you have a NAV display? If so, turn on the 4 x 4 view and watch the action of the four wheels. One may show as hyperactive or the other extreme, dead. Either one would be a clue to where a wiring problem exists.

As for the most part, the wheel movement on the display is very subtle, find a curb to mount slowly, one wheel at a time. You should see movement of each wheel, one at a time, or not. If you get movement showing good at all four, then drive for a few days watching for anything odd. These problems are most often intermittent and that is what makes them so difficult.

And as above, replace the brake light switch. Even if it is OK, one day it will not be, hence you may as well do it now. The link below may help re the switch.

http://bit.ly/11MyYA6

 

[Houm_WA]

Sounds more like a cross-link articulation failure to me. The RED is indicative of something more than the brake switch or alignment. Check the wiring harness on the frame rail of your driver's side for any damage. Check your swaybar end links, too...and your airshocks....for any damage.

Could be a sensor, too.