On startup the car will make a loud buzzing sound from next to the back left wheel.. it's actually quite loud and lasts for about 20 seconds.. it happens every time and has done so for months.. it sounds like it's something related to the air compressor.. can it be fixed by making sure the air compressor insulation is fixed properly? or is this just a normal sound?

I get the same sort of noise out of my missus's Disco, but my RRS is silent and i lower the suspension every time i get out, therefore the compressor works every time i start it back up and drive off, i would get it into the dealers if i were you and get it checked out  some of my Previous cars
--------------------------------
P38 Range Rover Autobiography
RRS 2.7 HSE Silver
RRS TDV8 HSE silver
FFRR Vogue black
Disco3 HSE silver
RRS 2.7 HSE silver
RRS 3.0 HSE BALTI BLUE
______________________________
current vehicles
RRS 3.0 L494 Autobiography
Audi R8 V10 Spyder
AC Cobra
Landrover Defender 90
Landrover Defender 110
Suzuki Jimney

thanks envoy.. yes it also makes the same loud noise if i raise or lower the suspension.. it's annoying because it doesn't sound good, you can hear it from inside the car clearly and it's much louder outside.

this noise only started after there was an upgrade done to the air compressor about a year ago.. i guess i'll take it back to the dealers.. showed them this problem last year and they told me all RRS make this noise.

They don't all do that nor should they. And there was, I recall, a dealer requirement to check them all - this was over a year ago. This may be the upgrade to which you refer.

My last one did make a racket but only when the bracket holding the compressor pump was broken by somebody jacking up the car in the wrong position and breaking it! (Not me and a long story...) A new bracket and cover plate sorted the problem.

In short get a dealer to have a look, a visual inspection may reveal the pump has worked loose from its housing. Hopefully it's a quick fix.

Welcome to the forum. Driving - TDV8 HSE in Stornaway / Ebony / Brunel
Sold - 56 TDV8 HSE in Java Black EBONY/RHODIUM/PRIVACY GLASS
Sold - 05 TDV6 HSE BONATTI/BLACK/RHODIUM 20''STORMERS, PTI AND FACTORY TINT.

hartleyhair wrote:

My last one did make a racket but only when the bracket holding the compressor pump was broken by somebody jacking up the car in the wrong position and breaking it! (Not me and a long story...) A new bracket and cover plate sorted the problem.