The Quadra-Lift was a late availability item. The initial Overlands did not have the system.

 

okay. I was not aware that it was a later production item. That may be a good thing (not having it) given everything I'm reading here.

 

There have been a few problems reported here but for me mine works great. I took it out west to Utah for 10 days and did some moderate to hard off roading in the rocks and trails.

The Jeep as a whole performed great. I used the Q-lift a lot.

I have 13,000 miles on it now.

 

Production of Quadra-Lift equpped WK2s began in mid August, 2010 (IIRC, it was the 11th or thereabouts). There had not been too many Overlands made before that point; it seems like they weren't making them in July, but some had been produced without QL.

 

I haven't read that many problems on here and I think we owners are the pickest of all people. My quadra lift works fine and rides smooth. I was also hesitant at first but I'm glad I went with the air ride. If youre going to be towing it's nice to have the instant height adjustment when under a load. The self adjusting shocks take a little while to get the ride height but the quadra lift shoots the ass right up.

 

You do not need the Quadra lift suspension for the load leveling shocks. The load leveling shocks are available on any model with the addition of the Tow Group not just the overland.

 

But my understanding is that load leveling occurs after driving over bumps and then the shocks level themselves against the weight. QL adjusts parked as soon as the weight is applied.

 

No, they both work the same way for basic leveling. They level the vehicle whenever the sensors see the same reading for a programmed amount of time but do nothing when the suspension is in motion such as going over bumps. (see below for the way QL handles height changes under motion)

For example, when you load the rear while sitting still it will raise the vehicle to the proper height. It will also level when you stop at a light or stop sign if you are stationary for a long enough time. It will lower under the same conditions.

The biggest difference is with the QL where it can change height while in motion. It does that by averaging the readings of the sensors which is why some hear the nitrogen tank "ping" while underway, usually when the system is switching between auto and aero height.

Also note that the load leveling is an open system, meaning it pumps and vents to atmosphere where the QL is closed and recirculates 99% pure nitrogen.

 

I currently have 3200mi with only a few problems in the QL. At 1000 and 1200 it flashed service AIR, restarted the car and everything worked fine.