Air Suspension problem, DTC C1A13-64, its kinda weird, when you turn the key on for the first time it set that code, but if you cycle the key on and off 3 times it works no suspension comes on and I am able to use all the terrain options. Do i have a bad relay or faulty air compressor?

 

Could be the relay, you can swap it with the one next to it or a spare one. Also check the fuse near it, should be 60 or 70 amp as they can get a bit burnt up but still work. If it was the compressor, it would not restore it self.

 

How old is the compressor? I think a couple folk here recently rebuilt just the drier with new desiccant and it solved the venting issue. For anyone working on the drier, I recommend a new o-ring at the end or applying a small amount of silicone grease to make sure it attached properly. From experience, that o-ring is easy to damage.

 

Ooh okay, I did replace a new relay and check the fuse for it. It is still doing the same thing. It's weird, sometimes it works and some other times it doesn't... how much is to rebuild the compressor? I have never rebuilt one before

 

The kits of ebay are cheap and rebuilding is not hard if you can use a few tools. The problem I see is that it is more an electrical fault rather than mechanical problem. Remove relay, with ign in position two (engine not running), use a jumper across the two large relay slots and see if compressor runs. If it does, problem is electrical, recheck relay is working and that the fuse is seated right down.

 

Okay, so the first thing i did was turned the vehicle on, and running, hit the switch to rise the vehicle, the suspension light turn on the dash and said there's a fault...I then turned the vehicle off and set it on engine off, and hit the lower switch, i've notice it drops just a little. then hit the switch to access position it then goes all the way down, after that I hit the up switch to rise the vehicle, the light on the dash will say turn vehicle on running. I'll do that, it then goes to standard height and no suspension light comes on..weird. I'm also able to use the off road height without no suspension light to come on again. If i just turn the vehicle on and run, the light on dash will display suspension fault when hitting the up position or down switch. Somehow i'm able to trick the system by doing that.

I've also notice when driving the vehicle and leaving it on standard height, it will set a suspension fault and the 4x4 screen will say off road position, which i never hit the switch in the first place.The green line is above the white dash lines...Do i need to recalibrate the height or the compressor not engaging because there's a fault in the system??

I know my compressor is working...if there's a fault in the compressor the module will not allow it to work?? I mean I don't understand how I am able to trick the system like that..

 

Have you removed compressor and cleaned it out, if not you need to get a kit and start there

 

If you have a system fault, there is a logic condition where they vehicle will go into extended mode. This is usually indicated onto info screen. But it can happen at any hight. So while you did not selected off-road, you may be in extended mode which translates on the screen as off-road no matter what mode you are in. You can actually end up in extended mode even when in access mode.

 

It sounds more and more like a weak compressor issue. This can be wear and tear on the compressor itself, the motor / brushes / bearings. It can also be old / dead / clogged desiccant or desiccant that has blown into other places such as the venting valve causing it to leak open a little. Where the computer can send a fault based on raising too fast indicating a clog or plug, or too slow indicating a leak or improperly working compressor it is difficult to diagnose "compressor fault." The big kicker is that so many other systems are tied to this which makes any of the vehicle dynamics (rear and mid lockers, even ABS) not engage to their full capacity. You're on the right track - start with the system and check for any leaks. If the system is holding then move to the compressor and make sure it is working properly. Then start digging into the valves and switches. Often times I've found it is an older slightly corroded ground somewhere in the system.

 

I bought a used air compressor, the one that i had was a AMK, and this one is a hitachi compressor. So I installed it and now this time the suspension goes in extend mode, it goes away when im driving over 30mph, and set to standard mode. When it does that i dont touch the level switch at all and stays normal with no problem. However when I select access height the front suspension goes down, and the rear doesn't, and then all sudden goes into extended mode, keeps saying theres an object underneath the vehicle which is there isn't. Oh it goes better, the rear gets so jacked up that it looks like I put a 6inch lift kit lol. Anyway i've also notice when im driving over 30mph the suspension goes down to normal height, the left rear height sensor goes out and throw a suspension light. The amk compressor would not do all of this except throw a suspension code of C1A13. My question is should i just buy a new compressor from ebay or amazon? Should I least try to recalibrate the height since I lift the vehicle when installing the compressor?? What should I really do at this point?