How Does Air Suspension Work in Land Rover Discovery 2? In a Land Rover Discovery 2, the air suspension works by adjusting the ride height of the vehicle based on the terrain and driving conditions. The ECU (Engine Control Unit) controls the air compressor, which inflates or deflates the air bags located at the front, rear, and sides of the LR3 was driving perfectly fine, however yesterday I got out to get the mail, got back in without shutting it off and had: 1) HDC Fault. 2) Parking Brake Fault. 3) Parking Brake amber light illuminated. 3) No special Programs. 4) Speedometer does not work/miles do not accumulate on display. 5) DSC and ETC amber light. 6) Check Engine amber light. 2006 Land Rover Discovery 3 SE w 157k miles I started receiving this Suspension fault a few months ago. C1130-66 (68) or (2C) Air Spring Air Supply Algorithm based failure signal has too many transitions / events I believe there is a tear in the Front Passenger side air bag because I can The car has been having a suspension fault since I got it. After starting the car it’ll throw the suspension fault code and stop rising wherever it is. I have to start it maybe 3-5 times to air up all the way to normal or off road height. Common displays are “vehicle raising slowly” and the fault telling me special programs are off. 50. Location. Beerwah Queensland Australia. Dec 9, 2022. #1. Hi all, back again with my LR 4 air suspension problem. have replaced the air compressor and was getting cross articulation, have just replaced the rear valve block. [ L R dealer had diagnosed the problem with the rear block] Got around 100ks before the U0421 code reared its ugly head Land Rover Discovery 4 SDV6 Suspension Fault. Thread starter Gumster; Start date Jul 8, 2020; G. Gumster New Member. Posts 3 Location Northern ireland. Jul 8, 2020 #1 I've had my suspension go out of wack before. The suspension or 4x4 screen shows a red blinking bar on the rear right wheel. I had the dealership recalibrate it for a whopping $350 and the issue came back a month later. Save some money and get an IIDTool BT. It's more than a code reader. It can recalibrate your suspension. It also does a whole Community site dedicated to Discovery 3, 4 LR3 and LR4 Owners and Enthusiasts. Totally free to join - message boards, galleries, wiki, off road events, social meetings. Advertise on DISCO3.CO.UK 0Ojsq.