I did a search regarding this article Compressor f56 (40A) https://mbworld.org/forums/attachmen...sam-fuse-5.pdf but i ended up with a message upon clicking:

The requested page was not found.

Being new to the site, it there any other way for me to retrieve such document?
Thanks for all your help.

minor issues with the air-tragic suspension system are very common - they seem very scary - but really its a basic stupid joke of a system, that provides no benefit other than increased profits for Mercedes - real steel springs give better ride and better control with zero reliability issues - when attached to a suspension design by grown up and decent conventional dampers

the older 220 had air struts that gave up far faster and at much lower miles - the 221 air tragic struts should do 15 years and 120k miles - but tiny other issues lead people to seemingly swap them out like confetti

note: in extreme low overnight temps (especially if when parked we'd had relatively warm daytime temps) it can mean the car will jump up and down by up to 1.5" (45mm) - this is not a leak. Most issues stem from the car has three level sensors (one each sits inside just above top middle of the front tyres - and does the front and side to side vehicle height, and the single rear hidden on the left above the park brake module - this does rear ride height). These sensors last ages, but operate via Bacofoil budget bracketry and an exceptionally cleverly crafted link rod with plastic ball socket joints - these have a penchant to seize on their mild steel ***** with enough force to suspend the Empire estate building upside down. Thus these link rods love to misread and eventual snap off. To ensure this minor failure appears dramatic enough that you'll pay any amount of money to get the car going - AND with zero regard to safety - Mercedes deliberately made the car fail (extremely) dangerous on the fly - so one minute the car is normal, the next second any front corner or the entire rear can crash to the bump stops dropping 7". Driving in this condition with destroy the car quickly.

Of course it could with its relatively modern system and a few lines of code fail perfectly safe and perfectly driveable (as soon as a sensor stops providing info the car could just keep the current ride height - but they don't AND no safety body cares enough to mandate the recall we desperately need).

the misreading sensors (from bending bracketry) often means car's suspension air pressure pump overworks - making the relay age, and in the end the 40A fuse you point out, can pop - more deliberate madness means the pump will not wake from this state even after the fuse is replaced and link rods are serviced - it is a big orange 40 amp fuse in the stupid box under the bonnet that need tools you won't have to access (it contains the front SRB and beneath the front SAM module). According to detailed info posted recently - the pump is designed NOT to restart till the car is driven and the level sensor start to provide valid data (which I presume must catch many a home based tech from getting far).

Mostly all it need is a new (fuel filter type) air clear on the pump inlet (that no one ever bothers to do) and every 6 months lubricate the silly ball joint in 6 places and swap the link rods every 5 years - then drive and suffer the crap suspension as intended...

Thank You Botus.

Reading thru the PDF you have sent, Incredible info to either do DIY or comes in handy when billing comes from the Dealership.
Thank You again.

the English way is to run the world and get everyone to speak English - its much more efficient - sadly one entity although offering this as a joke some twenty years back - actually means it - come on WW3, then everything will be OK...

"European Union Decision On Official Language"

The European Commission has just announced an agreement whereby English will be the official language of the EU rather than German which was the other possibility. As part of the negotiations, Her Majesty's Government conceded that English spelling had some room for improvement and has accepted a 5 year phase-in plan that would be known as "Euro-English". In the first year, "s" will replace the soft "c". Sertainly, this will make the sivil servants jump with joy. The hard "c" will be dropped in favour of the'k". This should klear up konfusion and keyboards kan have 1 less letter. There will be growing publik enthusiasm in the sekond year, when the troublesome "ph" will be replaced with "f". This will make words like "fotograf" 20% shorter. In the 3rd year, publik akseptanse of the new spelling kan be ekspekted to reach the stage where more komplikated changes are possible. Governments will enkorage the removal of double letters, which have always ben a deterent to akurate speling. Also, al wil agre that the horible mes of the silent "e's in the language is disgraseful, and they should go away. By the fourth year, peopl wil be reseptiv to steps such as replasing "th" with "z" and "w" with "v". During ze fifz year, ze unesesary "o" kan be dropd from vords kontaining "ou" and similar changes vud of kors be aplid to ozer kombinations of leters. After zis fifz yer, ve vil hav a reli sensibl riten styl. Zer vil be no mor trubl or difikultis and evrivun vil find it ezi to understand ech ozer. Ze drem vil finali kum tru! And zen ve vil tak over ze vorld!