This video came in handy a month or so ago when I changed the solenoid in my compressor (it was stuck in the open position and the compressor couldn't pump the car up) I'll be using this video as a guide again when i change my F11 with Arnott bags this weekend (if they arrive!) Muchas Gracious!

@allmech_BMW_fault_finding

9 ай бұрын

Hello Dan. No worries. I hope it helps you pal 👍 Just uploading my latest vid about replacing driveshafts abs rings - check it out. It would be great if you subscribe too that way when I make other F11 videos you will be the first to know. Make sure you inflate the bags with the wheels off the ground and be mindful as the Arnotts dont clip in tight at the bottom.

Thanks for the video. I have a 2016 X5 f15 that sags once in a while and raises when i start it. But on 2 occasions in the last 2 months, it didn't raise. I drove it back home while sagging, let it sit overnight and it raised fine again. So I'm not sure if it's the compressor or the airbags

Really thank you for your help..

@allmech_BMW_fault_finding

4 ай бұрын

My pleasure 🙂

Great video, i have a 2016 g12 750ix few days ago i noticed the front left suspension flat down, the next day it was still down and now its both front left and right. 2 days after, i press the ride height button by the gear lever and they both raise up for a few hours. But i hear a hiss sound by from right wheel. Is it my compress or shock?

@allmech_BMW_fault_finding

29 күн бұрын

Totally different suspension system mate. The whole leg with EDC is about 1500 Eur but Aerosus do a replacement for just the air bellow where you re-use your old EDC strut. The problem is cracking rubber leaking bellows at the bottom not possible to leak test as they are enclosed in a casing tube 🙂 You need new air bellow. Seen this in 2019 cars. PLEASE CONSIDER A SMALL "donation" on the Super thanks if this advice helped you. Even 3 Euros to buy a coffee. I dont like giving free info away.

thanks ,diagnostic nootebook program?

Yesterday I changed front springs into H&R springs and it came with back adjustment little things i dont know the name on English 🙂 everthing was ok until i change the left one which was the last one.. at firt was car to high i think on maximum then i drive it to test it and both sides felt dow but specialy left one its completly down do you know maybe what cause that? Is it sensor compresor or luft bags? Bmw F11 2012

Good job there , can I ask where you got the compressor and air bag from ? cheers Jon

@allmech_BMW_fault_finding

10 ай бұрын

Hi Jon. Thank you for the compliment. Well in Finland we usually buy from Örum or Koivunen. The brand is Arnott and the quality is very good. Relay we use BMW ones 🙂

@jonsmith8582

10 ай бұрын

@@allmech_BMW_fault_finding Thanks , wasn't expecting you to be in Finland , my guess was Bolton !

@allmech_BMW_fault_finding

10 ай бұрын

@@jonsmith8582 😅 Good guess! I was brought up 10 miles from Bolton❤️ Love home and miss it but I have lived in Finland over 10 years. I was back home a month back and sadly stayed only 2 weeks but it was great to be home. Yes they say I sound like Fred Dibnah - an honour indeed if I was half the engineer he was.

How do you disconnect the EHC control unit, and why? Thanks :)

@allmech_BMW_fault_finding

10 ай бұрын

No need really to do it but when powering up the compressor manually via the relay I dont think its a good idea introducing voltage that can backflow to the ehc control unit. Might cause no issues but better safe than sorry 🙂How? Just remove the connectors. To take it out pinch the holder tabs and slide the ehc unit forwards 🙂👍

i had a problem where the suspension kept going down and the compressor was always working and the 40amp fuse kept blowing. i replaced the airbags and replaced the compressor . i found there was no power going to the compressor so i unplugged the power plug and hooked an electical wire to the compressor and up to the engine bay. I touch wire to the battery connector and it gets the compressor working. when it's up i take it off and tuck it away.. For the life of me i can't figure out why there is now power to the compressor.

@allmech_BMW_fault_finding

9 ай бұрын

Hello Jim. You need to change the green relay as it can become pitted as your leaking airbags caused the old compressor to run more often than it should have. The relay gets very burnt on the contact faces so we always change them each time we replace compressors. If it was not working and now it is it might be just an intermittently failing relay. If it failed to power the compressor again follow my video and see Terminal 87 which is marked on the relay. Using a normal test light, even a basic one hooked upnto battery negative terminal, you can see if it lights up or not. If not then troubleshoot if terminal 30 has a live, if terminal 86 has a live and finally take your test light and put it on the positive battery terminal and see if terminal 85 is grounded. Those tests will diagnose it. If you have those change the relay. Jim be aware that powering the compressor will not inflate the airbags as there are the the main isolating valve and one for left one for right side. All you can do by powering compressor directly is to check a) it powers on and b) it draws normal current (21 Amps is good) One last thing - the EHC which is the height control module will switch off relay activation if it detects overloading. Hope this helps Jim. Best wishes - Ben

Hey, my left rear bag is empty but my right bag is filled and when i start my car, the compressor wont turn on, but when i do the compressor 20sec test then compressor runs but dosent fill the bag, also my battery is dead 11.8 and my alternator output is also 10.9v, so what can be the problem? car is f11 2012 535xd

@Marco-jy9ju

Ай бұрын

Im gonna replace my battery and alternator but i hope i dont have to replace my compressor

The left side goes down overnight but is ok when the engine is on. Any ideas?

@allmech_BMW_fault_finding

3 ай бұрын

Yeah you have either a leaky bag or one of the valves is stuck open.

@AdrianWilliams-lp7fo

3 ай бұрын

Actually it hasn't done it for a couple of days so it's intermittent really

Hi are you based in the UK? Thanks

@allmech_BMW_fault_finding

9 ай бұрын

Finland

what diagnosis did you use to determine this?TH

@allmech_BMW_fault_finding

3 ай бұрын

The customer complaint - car drops overnight. Leak sprayed the bags which as you see leaked badly. Bags changed and compressor was found to be extremely weak and took too long to inflate the new bags. The problem is people leave the bags to leak for ages and the compressor runs on constantly until it times out via feedback from height sensors. This is the usual cause. Compressors can wear in two ways - motor windings or more common the piston and bore wear out causing leaks internally and no pressure build up. You can easily test pressure build up by removing the black hose from compressor to valve block and make up a fitting to use a pressure gauge to check delivery pressure. In this car it had a worn cylinder and the motor was starting to draw quite alot of current.

@martinpour9267

3 ай бұрын

autologic tester name?

@allmech_BMW_fault_finding

3 ай бұрын

@@martinpour9267 I have autologic, thinktool and Ista

My e61 I’ve replaced both air bags but left side keeps dropping about 3 inches…could help me please

@krp4473

26 күн бұрын

When actually it drops ? When you keep the car overnight ?

@allmech_BMW_fault_finding

26 күн бұрын

Most likely you have rust in the left solenoid that exhausts air to control the level - it will be stuck open draining air out of the left circuit. The drier desiccant lasts about 8 years usually. Replace the valve block, break open the scrubber in compressor and add silica desiccant - valve block available separately if the height sensor on the left is working correctly then usually its the valve block issue

@Quick2004

26 күн бұрын

@@allmech_BMW_fault_findingI’ve replaced solenoid that connects blue & red pipes yesterday still drops about couple inches on left.. I’ll take the air pump off today and look over everything

@Quick2004

26 күн бұрын

@@krp4473it drops even turn ignition off or over night

@allmech_BMW_fault_finding

26 күн бұрын

@Quick2004 Live data would be handy. Is the height sensor axle ok? On some aftermarket bags the brass nut can be loose and leak air. Had alot of them. Fairy liquid mild soapy mix and check for leaks too. You may have a dodgy height sensor