As title, I have a 54 plate L322 purchased in the summer,has cost me a small fortune
To get it to my liking and without the clubs info would have cost me a lot more.
I have just done a couple of long runs, yesterday when leaving the services I notice a buzzing from
Behind dash and presumed heater fan.
Today discovered suspension compressor not cutting out, suspension levels all locking out but then discovered
Buzzing noise coming from passenger side front arch, lifted bonnet and noise is coming from a unit under abs unit
Can anybody shed any light as I don't want to be driving around and burn out compressor etc

Could it be the fuel burning heater seem to remember that being behind the near side wheel arch! Could be wrong though!

Is it not a fan for an ecu behind the dash? I think if the compressor overruns it will eventually cut out and show a fault to protect compressor..maybe check for a leaking strut...very easy to check..

I had both front struts and air bags replaced July, was my original thoughts,
I didn't know if there was a unit on the inside engine bay under abs unit that governs the ride height
As this part is making the noise, it has a blue 5mm silicone hose coming out of this unit

Air suspension ecu? Looking at the workshop manual its position in the car is quite close to the abs unit...

Click image to enlarge

Ignore first pic..fat fingers

The unit in engine bay near the strut 4-5" cylinder shape
Has a 1" pipe one end and other end a blue & brown wires
With ingniton on - not engine compressor runs and this
Cylinder unit is puslesatting,just wondering if it is anything to do
Pre heat ?