I am getting a Suspension Fault / Normal Height Only, error, with the amber roll over light turning on (its a 2009 LR3).

The code im getting from my mechanic shop is CIA20-64 - Permanent - "Pressure increases too slow when filling reservoir."

My vehicle maintains its height overnight. it hasn't lowered by itself at all. this has been going on for weeks.

The mechanic shop im working with says the compressor and struts are fine. he seems to think the air suspension tank (compressor reservoir , he calls it) is clogged or leaking. is this possible? when describing this to the dealership, they act like its rare the reservoir needs replacing and it most likely needs a new compressor. another guy ran the codes while i sat in the car and he told me (within 3 minutes) that i needed a new compressor (without looking at anything but the computer / code readout).

I, like my mechanic, think the compressor is ok, bc it is holding its height / air. any thoughts on this and the suspension reservoir tank being the culprit?

thank you!

 

It sounds like your compressor to me. You could get under the driver side of the car and physically inspect the air tank on the frame rail, maybe spray with soapy water to look for a leak.

 

I just replaced my air tank as it was rusted and had developed a pin hole leak which my mechanic found and brazed temporarily. Swapping out the tank took about 1/2 hour in my driveway and the cost from my local dealer was $250. I also sprayed the new reservoir to further protect it before installing.


Of course, I live in the rust belt of the east so wouldn't be surprised if the air tanks are not usually a problem. Without mud guards though, the front of the tank does get blasted from the front left wheel continually.

 

The condition of your compressor and the fact that it maintains it's height are not related. You need a compressor.
You "could" need a reservoir, if you could prove it was leaking. The problem is that, even if the compressor comes on and sounds like it is working, it has to build a certain amount of pressure withing a given time frame, so a "weak" compressor will set this code.

 

yikes. not what I wanted to hear but at least I wont feel like I'm getting too ripped off now. I say "too" ripped off bc the dealer and another place want $1300 or so for the compressor. I see them online for $400-700. the newest mechanic ive been speaking with will hopefully not over charge.


next week I will ill let him take a look at it again. he said he would inspect the reservoir better and see if its clogged and install a new one if not. its only about $250 to do it, so if that doesn't fix it, then ill have to get the compressor it seems.

 

thanks. I will try to inspect it myself this weekend.

 

Compressor prices go up and down like the stock market, but I'm showing the latest part number as LR072537 and retails for $1025.18.

I see one on ebay for just over $900. Land Rover Air Suspension Compressor LR3 LR4 RRs LR061663 LR045251 LR072537 | eBay
This is not my auction, I just googled the part number.

It is the updated version (hence all the lines that go with it).

 

I see a lot of the older ones online for sale. What is the difference? Is it okay to replace an older model with the older one?