Lost for Words wrote:

There are two software versions for the AMK - 9H22-5A919-AA and 9H2M-5A919-AA.

Disco_Mikey wrote:

And they are specific between ARC/non-ARC

won't mention any names, went back to the garage that was paid to update the firmware (knowing that the firmware install was only 6XXX) spoke to the guy who said you sure I updated it as I don't remember putting a battery charger on last time !

I then asked whet I have paid £50 for when I went in and only ever asked for the air compressor firmware update


so an hour later I drive away with NOT ONE error in the system on a global read with firmware version 9H32-14D394-AA
updated using autologic (not autocom as list above) no lights on the dash

advised my friend now it's all working fine sell the bloody thing !

For better or worse I didn't use that bit or cut the pipe, didn't feel comfortable cutting them, I left them.the original length and placed them so there was no kinks anywhere

Ok cool thanks for the info this thread has helped me alot

After installing new pump do you need to clean out the 4 air valves for each corner of the car? Don't know the name of them. Thanks

My RRS

Are you referring to the valve blocks? If so im pretty sure the are only three when i replaced my pump i did not do it.

Yes that's it thanks

Still do not know where and how the four brass inserts fit or go. two 8mm and two 10mm brass tubes i take it one brass tube each side of the air connector? what do the brass tubes do?

i think this is the best way to fit?

or like this?

Hi guys,

I replaced my amk compressor today with a new aftermarket one but now I am getting suspension fault and unable to do anything with air suspension or the terrain selections. Getting code c1a36 exhaust valve. Could this mean I need the updated software rather than anything actually being wrong with my install or the new compressor.

I had my 08 L320 in for diagnostic and repair, just before xmas '24. They replaced the compressor and re-flashed the ECU. Problem gone- no amber light and 'special programs' fault.

However, my new compressor runs each time I start the car for a minute or so- yet the suspension doesn't seem to drop at all?
My logic is telling me that if it has a slight leak, then its likely to be the air reservoir tank?- otherwise the car would drop one side or something?

Does anyone have a suggestion of do I just put up with it? My new compressor is much louder than the old Hitachi one...The iNDY said that they wouldn't fit the 'Amazon or easy ones' as they always fail, so Im presuming its an AMK that was fitted- hence the re-flash.