Thread: Suspension Faults

The front pipes have screwed connections which are easy to undo, unlike the rear pipes with their push-in collets that get clogged with dirt preventing them from being pushed in far enough to release the pipe.

Garry, let me know how it goes. My kit's been sitting on the shelf waiting for a need to use it. I've decided one day I'll pull it and just do it. Love to hear any tips.

Mostly on the UK videos they have to cut and rejoin the pipes with special joiners. No problems with that solution. Mine all came out with WD40 and persistence.

I did find that you need to get your body in a tough position to work on the unit. I had access to a pit. Doing at ground level on a jack would be tough.

Gday Garry,

I always thought the message centre showed a fault that said " compressor taking to long to inflate" or something along those lines if the compressor was on its way out , or have you actually identified it as a compressor fault thru the codes.
I battled suspension faults for ages that were very random but they did throw up a fault code , long story short , after replacing globes, brake light switches etc it was a battery issue.

I would have thought the compressor should last more than 132,000ks.

Cheers Ean

Originally Posted by Ean Austral

I would have thought the compressor should last more than 132,000ks.

Cheers Ean

Age seems quite random. I guess it depends how much work it has to do - regularly off-road raising and lowering etc. Mines still ok at 7 years and 240k km but it spent a lot of that cruising the highways, so little usage.

Thanks for the responses - others experience with the collets seem to be the same as mine - what a stupid arrangement - same as the filter/dessicant arrangement - why have this in the air compressor unit itself rather than a service item screw on canister (similar to an oil filter) on the side of the unit (just pull the bottom cover off to replace) or at the air intake end in the rear guard.

Ean - just checked the codes and the suspension fault light cam on straight away - also the air compressor was cycling in 2 sec cycles - 2 secs on 2 secs off but once the tank was full it ran normally in trying to keep the car level (car is a on a slope).

Codes
C1A13 Pressure does not decrease when venting the gallery
C1131 Intermittent air supply component failure
U1A13 Front right sensor - voltage out of range
CIA20 Pressure increase too slow when filling

I am not sure which are historic or are current as I have not checked the codes in about 4 years. I had battery issues last year and I think the sensor fault is related to that. The others seem to indicate a compressor issue rather than anything else.

I cleared the codes and none came back and the compressor was running and the car levelling BUT the tank is not full from when I first ran the car. I would expect at least C1A20 will come back in a little while - I need to go out in a bit so will check.

Ean on a side issue - remember we recently discussed remote EGRs and fault codes - well when checking the suspension stuff I checked engine codes - nothing there at all - so no issues with blanking EU4 engines with serviceable EGRs attached to the wiring loom.

Garry

Just went for a drive down the auto elect for something else - no issues. Stopped for a cuppa and while parked dropped it down to acess height and then straight up to offroad height +50mm (have LLAMS) and went straight up except for the last few mm where the slow to fill message came up (note this is an advisory message not a fault message) - with LLAMs this is all normal and normally I stop at offroad height for a few minutes to get air into the tank then go the extra 50mm. I drove off at this high height and dropped it back down to access and then back up to the equivalent of super extended no issues. The dropped it down to access height again and back up to super extended ( this is really taxing the system and is not recommended) - above off road height the advisary message came up that raising height will resume when cooled - this is all normal and given three full cycles from access to 50mm above offroad shows that the basic system is OK.

When I got back home I put the Faultmate on to read the codes with nothing showing.

Open to any comments to assist with fault finding but in my mind the compressor is being strangled a bit from slightly blocked filters but is still working - if the tank is full it can keep air in there but if depleted it has trouble. I have two 4wd trips coming up in September and I dont want to go with a dodgy compressor. Next weeks job and if I am wrong it will give me time to go looking further.

Garry

Pretty much identical behaviour as I was having. An overhaul with the X8 kit and I have had no further issues since.

Oh, and all hoses (front and rear) just popped off and refitted without problems.