Right guys, I’ve got to admit I’m stuck.

I had air susp. Inactive on the dash from purchase, put it on a code reader and the only code was pressure static when filling. Which points towards the compressor, I rebuilt the compressor using a good quality kit and again popped it on the diagnostics. Fault all cleared and I watched the compressor build to tank pressure to 11.6bar. The car also raised to the middle height as it was low due to be having a wheel off for another issue. The middle LED was illuminated.

I was watching the live data and then it suddenly went back to air susp.inactive and all the lights on the control panel went out.

However there is no error code stored on the air suspension ecu or the steering wheel angle sensor (all clear). I’ve tried lock to lock many times but I don’t have anymore lights on they dash etc but it has given me the odd random HDC inactive message. I am able to active and stop the compressor and also move the car an axle at a time up and down on the diagnostics which tells me the valves and sensors work and the compressor is producing air to the correct pressure etc.

At this point I figured it may be my basic diagnostics kit (INPA) so I have had a good snap on solus which can read all of the modules in the car and the only fault code we can find that is related (and won’t clear!) is 0x57 Air Suspension active/inactive on the LCM. My gut feeling is this is a generic message basically saying it can’t level the car/headlamps because the eas is inactive or is this something else?

I’ve even tried disconnecting the compressor for it to try and trigger a fault to clear it but can’t engineer that either. Also checked fuses 57 and 88 which also seem fine.

I’ve done 100 miles or more in it today and it’s sadly nicely st height perfectly level.

My next plan is to disconnect the battery, put it on the charger and also let the car fully discharge.

Has anyone any ideas of where to go next? 2005 E60 M5
2006 (MY07) L322 4.2 S/C
2024 i7 xDrive60
--------
2004 L322 4.4 Vogue, 2002 L322 4.4 HSE, 2006 (MY07) L322 S/C , 2001 P38 Vogue, 1999 P38 4.6 HSE.

Last edited by quavey on 12th Nov 2018 5:25pm. Edited 1 time in total

1. The fault code in the LCM is set when there is a fault in the EAS, so will need clearing
2. HDC fault will pop up for just about any reason, usually due to battery voltage but is also in the daisy chain for EAS problems
3. Rebuild jobs on compressors do not always work or last long, you may have to bite the bullet and get a new compressor...
4. EAS lights out on the dash mean you have a hard fault on the EAS, possible your INPA can't see it, the Solus "should" find it, or you may need LR specific diagnostics to fix.... .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Thanks, compressor will run when told and maintains the tank pressure at 11.8 bar so that appears ok.

INPA Will only read eas and szl modules. Solus will go through everything and the only error we have is the one in the lock. Is this just repeating what is displayed on the dash?

What is weird and I’ve just remembered, in INPA it doesn’t know what height it’s at as in standard/motorway etc it knows where the sensors are and has a plausible reading on all corners but it doesn’t appear to have a reference point say ‘this is normal height and motorway is 10mm less etc)

I wonder if it’s lost the calibration figures? 2005 E60 M5
2006 (MY07) L322 4.2 S/C
2024 i7 xDrive60
--------
2004 L322 4.4 Vogue, 2002 L322 4.4 HSE, 2006 (MY07) L322 S/C , 2001 P38 Vogue, 1999 P38 4.6 HSE.

I can't believe it but I've cured it, I started looking at the calibration to see if I could teach it but to be honest I wasn't particularly sure so I left it alone.

I checked the LED activation status on the controls and they did work when told to by INPA so that told me the control panel had power etc.

Of course still no fault recorded anywhere other than the generic LCM error which is just a repeat of what is on the dash rather than anything useful as far as I can tell.

It then occurred to me that there was a shipping mode option and also a production mode option. Shipping was of course inactive but production was active. I did notice this previously and thought it was a poor translation meaning production as in finished product for the customer.

However seeing as it was broken anyway I turned production mode off to see what happened and the control panel lit up, air susp. inactive disappeared from the dash and for the first time since I bought it I've been able to raise and lower the car using the knob (not the driver). Production mode in this case appears to be when its on the production line.

Now I'm not sure if I've inadvertently selected production mode with the laptop perhaps with tap to click but its looking likely!

Anyway, climbed all the way to the top in around 15 seconds and the compressor then refilled the tank to 11.6 bar in around 15-20 seconds which all seemed fairly reasonable to me.

Now onto the next problem, the green oval curse strikes again. 2005 E60 M5
2006 (MY07) L322 4.2 S/C
2024 i7 xDrive60
--------
2004 L322 4.4 Vogue, 2002 L322 4.4 HSE, 2006 (MY07) L322 S/C , 2001 P38 Vogue, 1999 P38 4.6 HSE.

Jobs a good un. How's life with the fatty? 2003 Range Rover Vogue 4.4 on Gas
1961 88" 2.25 diesel - George
Gone - 1997 3.9 V8i Discovery - Burt

I’ve been meaning to email you actually!

Life with this fatty is OK, only got this one two weeks ago as I sold the supercharged back in March. There are a few jobs to do but big service next Thursday and I’ll see how things are from then.

How’s things mate? 2005 E60 M5
2006 (MY07) L322 4.2 S/C
2024 i7 xDrive60
--------
2004 L322 4.4 Vogue, 2002 L322 4.4 HSE, 2006 (MY07) L322 S/C , 2001 P38 Vogue, 1999 P38 4.6 HSE.