let me start by saying this is my 4th L322 doing these same EXACT mods, 3 of which never having issue, so I'm confused.

new wheels, 265/70/18 tires, and Johnson rods went on…

2012 RR HSE
1. HDC not available, system fault
2. emergency brake assist not available
3. stability control not available
...and the traction control lights, triangle exclamation, and air bag light all stay on.

everything resets when the car is parked and then turned off and then on. car runs fine.
seems to trigger only on after about 10-15 minutes, usually on the freeway.

let me know, thanks!

 

monday bump. please help

 

Find some way to scan the systems for fault codes. That is essential to try and narrow it down. Could be a wheel speed plausibility error, could be a wheel speed sensor fault, could be a level sensor fault, etc... Maybe a speed sensor wire got stretched or bumped, I've seen level sensor arms reversed, too many possibilities. If you know the fault codes, you can narrow your focus.

 

My bet would be a height sensor but guessing is all we are doing without codes

 

Yeah, I find it humorous that people have warning lights and want to know whats wrong. Warning lights mean there are fault codes stored and although the "magic computer" won't tell you what is wrong, it will at least give you a direction to go. They have it easy. We sometimes chase symptoms that generate NO warning lights and NO fault codes. Now that is fun.

 

^ I'm asking because it resets every drive bud. READ my OP...I was simply asking for some input & advise as this makes no sense given it's not my first rodeo doing the same exact mods. I didn't have immediate access to scanner either.

but, I just fixed it. luckily a good friend of mine took a guess and it worked.
we scanned the truck and cleared all codes. immediately they came back...same ones I have mentioned above. oddly enough ABS & airbag systems effected.
from his prior experience, he tried a steering wheel reset. we went thru the steps it asked for and still the codes were there. we kinda gave up and I was planning to head home and swap the legs back to stock and see if that fixed the issue but my entire drive home nothing came on.
it's been a few days driving the truck all over town and everything is fine...not faults. not sure why that fixed it, but I'm not complaining!

 

Just so we are clear, what "legs" did you put back? Did you take the Johnson Rods off and put the stock links back on?

 

I said I was...I didn’t because it worked.