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I have a 2004 with 63k Miles now

I started to get an Air Suspension Inactive sign 2 weeks ago and the range was stuck at ride height. I took it to the dealer yesterday (since no one else in the area I called had proper diagnostic tools) and they ran the diagnostics, telling me that I had a faulty/ failing air compressor and quoted me $900 for the repair. Soon enough, the technician came in and said once he reset the computer, the compressor was working fine and the suspension was active again. I paid them the $115 + tax for the diagnostics and reset and I was happy on my way. The car was fine all day - started it up 3 times after the dealer.

Today, I started it again, to witness another Air Suspension Inactive on the screen, again stuck at ride height. The temperature has been below freezing for the past few weeks here in NJ and the problem first occurred on the coldest day we had here.

Do you guys think the problem is linked to a failing compressor? Is there a sensor associated to the compressor that could be causing the problem? Is there anyway I can reset the EAS myself (through a battery reset by taking of the negative terminal)? Is there anyone in the NJ/NY/Philadelphia area with the tool to reset the EAS?

Any help would be appreciated. If the compressor was shot, why was the range working after the reset? The bags were inflating and deflating perfectly fine - taking the normal amount of time to do so.
 

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drngd said:
I have a 2004 with 63k Miles now

I started to get an Air Suspension Inactive sign 2 weeks ago and the range was stuck at ride height. I took it to the dealer yesterday (since no one else in the area I called had proper diagnostic tools) and they ran the diagnostics, telling me that I had a faulty/ failing air compressor and quoted me $900 for the repair. Soon enough, the technician came in and said once he reset the computer, the compressor was working fine and the suspension was active again. I paid them the $115 + tax for the diagnostics and reset and I was happy on my way. The car was fine all day - started it up 3 times after the dealer.

Today, I started it again, to witness another Air Suspension Inactive on the screen, again stuck at ride height. The temperature has been below freezing for the past few weeks here in NJ and the problem first occurred on the coldest day we had here.

Do you guys think the problem is linked to a failing compressor? Is there a sensor associated to the compressor that could be causing the problem? Is there anyway I can reset the EAS myself (through a battery reset by taking of the negative terminal)? Is there anyone in the NJ/NY/Philadelphia area with the tool to reset the EAS?

Any help would be appreciated. If the compressor was shot, why was the range working after the reset? The bags were inflating and deflating perfectly fine - taking the normal amount of time to do so.
Search the forum, buy the USB air suspension tool one of the members sells... I'd link you, but I'd have to search for it. Its around $200


when its cold the air suspension can be a nightmare... I'd inspect the compressor yourself, make sure the spare tire isn't resting on the air line leaving the compressor.
 

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Discussion Starter #3
shouldn't the dealer diagnose and reset the problem for me for free since they charged me 115 yesterday and then sent me on my way telling me everything was okay? i forgot to get the exact fault codes - hopefully they have them documented - or they can run it again. has a dealer ever refrained from giving those out?

could this be a valve block because of the cold weather? the ride was adjusting itself in a timely fashion once it had been reset.

if i did have to buy a new air compressor, where would you suggest i buy one from? anyone with links for me?
 

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drngd said:
shouldn't the dealer diagnose and reset the problem for me for free since they charged me 115 yesterday and then sent me on my way telling me everything was okay? i forgot to get the exact fault codes - hopefully they have them documented - or they can run it again. has a dealer ever refrained from giving those out?

could this be a valve block because of the cold weather? the ride was adjusting itself in a timely fashion once it had been reset.

if i did have to buy a new air compressor, where would you suggest i buy one from? anyone with links for me?
Honestly it could be so many things its mind blowing... The car needs to be put on a computer and the codes need to be pulled...

Sometimes the cold will cause issues, but if you've got a steady "air suspension inactive message," and you're locked out something is obviously wrong. Even just low battery can cause that...


In-fact I just replaced my battery, it would start, but not enough juice to fire up the air suspension... Swapped the batt and the issue is gone. It could be a sensor, a frozen valve, a fuse, a leak... literally hundreds of things, if the compressor was running I highly doubt that's the problem, if anything pull the electrical harness coming from it, shoot it with some electronics cleaner and plug it back in.

If you're not handy around cars just take it back to the dealer
 

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i agree with Brad about it being so many different faults as i was told it could be 1 of 47 faults with the EAS inactive alone. :doh:
good luck
 

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Hi,

It would seem the three most common causes of 'air suspension inactive' are:

1. Tired Compressor (£390+ Fitted)
2. Sticking Pressure Switch (£170+ Fiited)
3. Low Battery Charge

My Vogue done exactly the same thing - had it reset, two days later the message was back. LR fiited a new compressor and its been fine ever since.

Futting the compressor itself isnt too much of a hard job i dont think, and you can pick them up on ebay and various specialist sites - however you will need a software reset after fitting the new unit.

Good luck,
Matt
 

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Thanks guys,

After talking to the dealer (stealer) today, the fault code was: "Reservoir pressure static when filling"
Does that mean that the compressor is shot?

Also, He quoted me $1000 for the fix! Isn't the compressor really easy to swap out? Should I buy a new compressor vs a used one?
 

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drngd said:
Thanks guys,

After talking to the dealer (stealer) today, the fault code was: "Reservoir pressure static when filling"
Does that mean that the compressor is shot?

Also, He quoted me $1000 for the fix! Isn't the compressor really easy to swap out? Should I buy a new compressor vs a used one?
Could be those 24" wheels the ageing system does not like.... :wink:
 

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Discussion Starter #9
its possible, but i have 20" Range Rover Sport wheels on there now.. have had them on for the winter (last 2 months) - planning on keeping these too, 24's will be on sale soon!
 
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drngd said:
Thanks guys,

After talking to the dealer (stealer) today, the fault code was: "Reservoir pressure static when filling"
Does that mean that the compressor is shot?

Also, He quoted me $1000 for the fix! Isn't the compressor really easy to swap out? Should I buy a new compressor vs a used one?
If they quoted you $1000, did you not ask what they were fixing?

I have never seen that Reservoir pressure static when filling, and I would tend to say that you might try replacing the pressure switch (the cold will cause problems here), it that does not work, I would switch out the front valve.
 

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Discussion Starter #12
darrinturner said:
drngd said:
Thanks guys,

After talking to the dealer (stealer) today, the fault code was: "Reservoir pressure static when filling"
Does that mean that the compressor is shot?

Also, He quoted me $1000 for the fix! Isn't the compressor really easy to swap out? Should I buy a new compressor vs a used one?
If they quoted you $1000, did you not ask what they were fixing?

I have never seen that Reservoir pressure static when filling, and I would tend to say that you might try replacing the pressure switch (the cold will cause problems here), it that does not work, I would switch out the front valve.

The $1000 was for a new air compressor to be installed. Where is this pressure switch? Is there anywhere that can show me how to switch it out and what part I would need to do this? I would still need to reset the EAS after I switched out the switch right?
 

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I've been going through the same issue for a while now. I've been resetting the fault for 6 months. It's more than likely the compressor. Mines gone at 72k. I kept resetting it and now it sounds like a bag of nails. You can try replacing the pressure switch first. But in all honesty I would replace the pressure switch and compressor in one go. I believe the system times out if it doesn't reach a certain pressure in a certain time. I even went down the route of upgrading the air suspension firmware to see if negated the problem. It was a waste of money.
 

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I remember some-one mentioning a while back - like about two years ago - that there was a TSB (technical service bulletin) on the compressors and the computer was adjusted to deal with a common problem. You might be well advised to do a search on that, in case yours has never had the relevant ECU adjusted.
 
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