2009 RRS with 100k miles. No lights on, everything operating as it should. Experienced something yesterday that makes me very uncomfortable. Traveling on paved roadway, approx 35 mph. Road has a 30 degree turn to the left, and right as I make it there is a spot in the road where it was obviously a filled in pothole (likely more than once). As I hit it, the rear end of the RR felt like it didn't maintain contact with roadway and lurched hard to the right. Really hard, so much I was grabbing the wheel like it might go on it's side. The vehicle groaned. I've never felt anything like this in any vehicle I've driven over that roadway, it's not far from the house. I don't know if that is "normal" for the air suspension? If it's not, what do I need to get looked at? Anyone want a 2009 RRS in good shape? Ha.
dk504
RRS Rear End stablility
you might need to replace the rear shocks,
this usually happens when the truck is driven with heavy load on the bump stops,
or the air system fails and the truck drops to the stops.
How many miles?
this usually happens when the truck is driven with heavy load on the bump stops,
or the air system fails and the truck drops to the stops.
How many miles?
Sounds to me like the OP has been travelling on this road and hit this pothole slightly to the left at speed and the weight of the vehicle has made it fall directly into the pothole and vertically leveling it making it wobble and settle this would have been an earie feeling...i'm guessing the shockers are the originals (slightly worn out) this would make it bounce a little as it landed in the bottom of the pothole and out and as the steer was solid on the road with the OP trying to control it made it feel like something he's never felt before....it's just been a freak moment where he has slipped into the lower reaches of a largish pothole with very worn out shock absorbers. The airbags have probably never been replaced either so i would just get some new shockers and fit, then he should be safe to drive confidently enough to hit a pothole at speed (35ish) without having this type of effect happen again, the vehicle should glide through it without hardly noticing it as it's meant to.
118K miles on this RRS. The front shocks were replaced when I got it, but not calibrated. Had to get that done and I don't think the rear ones have ever been replaced. Of note, if I put it in off road/raised height it will go right up and rides fine until you hit the mph limit and then it will lower. Eerie is quite right. I am mostly in the city driving around, but sometimes my 17 yr old daughter will drive it and this event made me very nervous about her using it.
Have the bushings or control arms ever been replaced? If not, they’re definitely going to be tired at this point.
Rear shocks need to be done by 100k - these vehicles are heavy ! Easiest to replace the whole air spring / shock as a unit. They are about $300 online from Dunlop last time I checked - and any suspension shop should be able to do that job. Worn shocks will cause the rear to bounce like you describe …..
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