Hallo everyone,
after replacing the compressor with a new Hitachi and having the LR Dealer perform the software update and reconf. Im having susp. fault Red light coming on with code : C1A13 (pressure not decreasing ...)

I know the exhaust valve n compressor are good but apparently there was some desiccant debris inside the lines from prev. compressor ...Dealer tried to flush the lines and codes cleared...but now C1A13 its back
is there a sensor or anything else that could be done to fix this code???
Thanks

 

Other than a red light and an error message, what is the suspension system doing or not doing?

Somehow I am not surprised that the problem persists and quite often, there are two problems to be solved, hence solving one while necessary, leads only to the next problem. The 3's computers have a way of masking problems until they multiply to beyond the capability of the system to hide problems.

Is the rear high, and the front low, or it it a height problem left to right, or the vehicle will not rise, or will not lower - that sort of thing.

Also do you have a NAV system with the screen on the dash and hence the 4x4 display? If so, set the display to the 4x4 screen that shows the air system in action. Over time, by watching the movements, (or lack of them), on the display, one can sometimes figure out where the problem might be located.

 

I don't know if it's related, but there is a reservoir valve block, kind of like that blocks that go to the front and rear. Perhaps they could take it apart and clean it. Or replace it.

EAS Valve Block Reservoir (Genuine Part # RVH000046 ) - Land Rover air suspension from Atlantic British

Another possibility that comes up with google for the L322 Range Rover is a plugged up exhaust muffler.

https://www.landrovermerriamparts.co...&siteid=215719

 

Susp. light amber/red on so no rise nor lowering and Car sits higher on the rear both wheels ..dont have 4x4 screen ?

 

Yes I looked at that ..apparently there are two modules( RVH000046 and RVH000055)...I told my mechanic to inspect the lines for debris and clean the module as well since it seems something is stuck or clogged...Compressor is brand new and exhaust valve working...I just hope its not the module gone bad .

 

The 4x4 display can be helpful, but if no Nav, well that idea will not work.

I personally doubt that there is any actual exhaust valve problem and definitely no computer problem.

There is an exhaust airline right at or near the compressor that you can disconnect such that the system air just exits to the atmosphere.

The idea is to eliminate any plugged discharge lines or filters etc from the discussion. The location would be an airline located near either 21 or 23 on the attached doc. I think 21 is the place as I think that refers to one of the hoses exiting the air dryer and hence would be easy to get at. Someone else here on the board may beable to tell you just what hose to be disconnected and where.

My thinking is that disconnecting exhaust lines would not resolve the concern and hence one could stop looking in that area.

As mentioned in the above post, I tend to think the problem is related to the rear block valve, or perhaps the middle one - that one or more of the orifices is plugged with deteriorated desiccant. Removal of the rear is near impossible but the middle one is located near the compressor, hence easier to get at so that is the one I would first remove and try to clean out.

 

bbyer, are you some kind of genius/wizard ? you have every single info about these cars and I thank you for it. you have no idea how helpful you are...specially to me (girl) whos trying to figure out these Land Rovers. ..I do love them though
Do you know if the "inlet air filter" (No.19) is replaceable/serviceable?
Thanks again!

 

If by inlet air filter, you mean the filter that is located inside the truck behind the rear left tail light, yes it is replaceable. The odds are however that it is OK as being effectively located inside the cabin, it does not get wet or dirty - or at least should not. As such, I would say that no one ever replaces it; in any case, I have not in my 3.

Also I do not think there is anything wrong with the air in, (the suction side); I think the problem is on the air discharge side of the piping.

The air dryer/desiccant which is sort of a filter as well, is however something else again. It is plumbed into both on the air inlet and outlet piping. The theory is that when sucking, moisture is absorbed into the beads before the air goes into the airsprings. Then when the air exits the airsprings, the air flows back thru the beads and picks up the bead moisture which is then discharged along with the exhaust air - quite elegant a design really.

In your case, with the new compressor, you will have a new air dryer/desiccant, hence that unit will be OK. It is the failure of the beads within, (they turn to dust), that spreads thru out the system and then either cuts or clogs the block valve orifices. Your replaced compressor air dryer may be guilty of that.

Regarding the "girl" bit, most of the posts here by guys, hence I would say they are also as puzzled - LR does not discriminate - equal opportunity and all that. If you look at some early pictures of Kate and William in the UK, you will see your ride of choice is also theirs. It seems however they now have graduated to the FFRR just like Grandma. As such, you can be quite proud of your ride once you get it to a reliable state, and it will be a trial.

 

Catherine and William and their D4; also Jolie's Tomb Raider Defender.

You will note the steering wheel is on the wrong side of the D4 but they do that in the UK for some reason. Jolie's Defender seems OK however.

 

Hi bbyer,


I have been following this post as I am having the same issue. I replaced the air compressor with a new one and get the error C1A13 Pressure does not vent gallery on my code reader. I took your advice by disconnecting the air line that vents to the air silencer and that did not solve the problem. I replaced the exhaust valve so have managed to eliminate that as the issue and have also inspected the electrical connections under the drivers side front wheel as I heard that can also cause this issue. I took the vehicle to a mechanic that charged me 50$ to tell me what I already knew and suggested that I replace the sir compressor even though it is brand new (I bought a doorman compressor, a clone of the original hitachi) Is there any way to trouble shoot the EAS Valve Block Reservoir? How hard is it to remove and replace? Do you have any suggestions or what might be causing the problem outside of the compressor or the EAS Valve Block Reservoir?


I almost forgot to mention that when lowering the vehicle it will throw an error and go into extended mode and then say remove obstacle and lower vehicle. Not sure if this is pertinent but thought It would be best to give you the whole story.



Thanks in advance for the help!!