2010 LR4 Air suspension need advice

[Longtrail]

I didn't find the top mounting bolt that difficult on the compressor, in fact it pales in comparison to some of the other "bolt" experiences on this vehicle (thinking the rear suspension valve block air hose nut and valve cover rear bolts on the drivers side, + others!). Don't let this stop you if you need to pull off the compressor. Great to hear she's staying level. I suspect this is an on-going task every few years!

 

[jackkyxu]

an on-going task every few years!

Ha.... compared with coolant crossbody tube?

 

[Longtrail]

Ha.... compared with coolant crossbody tube?

Yeah - that as well, I didn't find that terrible to be honest, just take your time!

 

[jackkyxu]

I'd also say it's a pretty subtle white residue, replace the o'rings, use a very small amount of silicon grease on the new ones and generally give the whole block a good blast with an air nozzle and wipe down all the internals.

No need to change the desiccant.
Top mounting bolt: Use a long extension with a swivel 10mm socket.

The system won't run the compressor while the car is off, but will try to keep it level, so the only thing it can do is bleed air. This makes it harder to determine which corner has the issue, hence the recommendation to pull the EAS fuse. Then height drops are attributed to leak and not corrections driven by the system.

From the workshop manual:
"Periodic Re-leveling
When the vehicle is parked, the air suspension control module 'wakes up' two hours after the ignition was last switched off and then once every six hours. The vehicle height is checked and if the vehicle is not level within a pre-set tolerance, small downwards height adjustments may be made automatically"

here is another update


I did some errand trip today

First, the compressor did start working during the trip (after cold start, no working immediately, I guess due to the original height was off-road, and lowered to normal height), but the time of working duration is MUCH reduced, like 3-5 seconds

Second, after the warm hot start from parking outside a grocery store, the compressor did start working for like 15 seconds


My question is: is compressor start working like this a normal thing ?? or if I did cold start, should the compressor be normal to run for a short while


Thanks

 

[jackkyxu]

may I ask what is a normal working status for the compressor?


should it run every time car is ignited or every day to top off the reservoir (like very short duration of working)?



sometimes when I turn off the engine and lock the car, I can see car lowered immediately , sometime I do not see, is it normal?

 

[TimVZ]

Ours will occasionally "settle" after locking the doors. Typically this seems to be to level out.

 

[John Higgins]

hi

here is my update

I got the front valve block replaced, I DID NOT find white residue/powder in the air line, and I did air blast to clean

I checked the old valve block, and NEITHER any white residue/powder


I DID the height measurement again over night

this time, the height on front both DID NOT CHANGE ANY single mm at all



my next question is: should I still continue to replace the compressor desiccant?

(I checked the video, the third bolt on compressor is PIA, right? any trick to share?)


thanks

For the third bolt, notch the bracket while it’s off the car. Then put the nut on the bolt, screw it in a thread or two and slide the notched bracket into place. Finish by tightening up the bolt with a long ratchet.