Search the Community
Showing results for tags 'air suspension'.
Found 4 results
Hi everyone, i was wondering if anyone has come across a rear coil spring conversion for the F11. Or if anyone has done it themselves. I’d rather eliminate the issue of these airbags failing and being stranded somewhere because of them! thanks in advance Harris
So a few months ago my air suspension starting playing up. My car was at around 72k miles and I have a Luxury 520d Touring which has the softer suspension setup. It was mostly dropping when the car was parked but sometimes I'd randomly hear the compressor kick in with no change of weight or distribution. So I replaced the air springs as the obvious solution, with some Dunlop bags which we around £70 each and look pretty decent quality. Problem fixed for a few weeks. But then while driving one day the suspension dropped without warning, luckily on a slow street with no traffic. I stopped, had a look at the back of the car and it started rising again. It stayed up the rest of the day but overnight it dropped and wouldn't go back up, despite me testing with ISTA and verifying that the compressor was working and all control modules were functioning. I remembered seeing a Youtube video by DiagnoseDan where he replaced a compressor and later dismantled the old compressor to find the release valve was faulty. So here's what I did: 1. Jack up the car so the back wheels are slightly off the ground and secure with axle stands. 2. Remove the trim clips and two 8mm hex screws holding the underside cover in place and take off the cover. 3. Remove the 4 plastic nuts holding the compressor cover in place. The under-side ones are a little tricky and you're best using a short socket extension. Remove the cover to expose the compressor. If you have a tow bar like me, extend it out to give yourself more room. 4. Disconnect all plugs and the rubber air inlet hose from the compressor. You may want to disconnect your battery - I didn't, but I did clear all faults with ISTA afterwards. Disconnect the brass nuts of the red and blue air lines going out of the compressor, being careful not to damage the plastic threads in the housing. You will likely get some air coming out as the bags fully deflate. 5. Remove the 4 nuts from the spring-suspended compressor mounts and lower the compressor out. 6. Identify the solenoid valve (should say Wabco with a part number the same or similar to the pic) and unscrew the 2 torx screws. It is spring-loaded so hold onto it when undoing them! 7. If the shaft is difficult to slide in/out then it's faulty. It should fall out when turned over ie. no resistance. 8. Fit the new part, taking care to refit the spring and ensure the part is orientated the correct way. 9. Put everything back together in reverse (be careful putting you air lines back in as the housing thread is plastic and easy to strip) and lower your car back down. Turn on the engine and it should start filling the bags. Once full, the compressor should stop and you may also hear a little air being released, then nothing. If it holds over the next few hours you're probably all good. If not, check that your air hoses are properly tightened and not leaking air. You may not hear it escaping but I had to disconnect and redo mine as it was dropping overnight but inflating again when the engine was started. Tools needed: 1. 8mm and 10mm sockets with 6-inch extension 2. 10mm spanner 3. Torx (T27 and T25 I think, don't quote me!) 4. Plastic trim removal tool Part from ebay, around £20: https://www.ebay.co.uk/itm/223686694947 Time needed: Around 30 minutes.
Hi Folks, A conundrum for you. Having problems with the near side rear air suspension; symptoms: only effects the nearside; offside is fine. drops periodically (becoming more often) when car is parked up and engine is switched off will normally drop within a minute or two and you can hear a release of air from the back of the car seems to be susceptible when the temperature drops a little (but TBH that could just be coincidence) when I start the car up, it levels out and all looks fine recently when driving, I've gone through a few bumps and smaller pot holes and it feels like its dropped (feels like its on its bump stops - again, only on the one side); after 20s or so it sets itself level again and I can continue. Originally when it started happening, I took it to the dealers. They ran through their standard tests and couldn't find any problems (not sure the suspension dropped whilst there); they checked the air bags - no leaks. Getting worse (again, only on the one side) so dropped it down to my local garage - it didn't drop whilst there; they lifted it, checked for leaks... nothing. No error/fault codes reported either. Their thinking: can't find any leaks - not the air "bags" likely the compressor, but there's no fault codes indicating there's any real problem there. Again, it only happens on the one side. If it was a compressor side problem I'd have expected it to effect both sides... Any ideas? Thanks!
Hi, I am currently in Scotland with my E61 (2007 LCI facelift) & have had the above fault come up. This is the first time i have had it & a problem with the suspension. After doing some research on the 'net i have done the following things: -Checked fuses. All ok. No issues. -Checked the ride height sensors: NS: If i move the the arm up or down i get no click from the relay, or the compressor kicking in. The air bag is also soft (with the car jacked up) , however this side is sat higher. OS: If i move the arm up or down i can hear the relay click, but again no compressor kicking in. The air bag on this side has pressure in it when the car is jacked up. (I am unable to reach the airbags when the car is level on the ground to check if they have pressure or not) I am making an assumption that the 1 relay controls both sides here, and it is not independently controlled. Is this correct? Is there a way i can test the relay/the inputs on the car by shorting across the contact terminals to make the compressor kick in? What else is there in the system that i can check that may be preventing the compressor from kicking in? I have limited tools with me, so can only diagnose via testing parts on the car and the way they should respond to inputs. On another note can anyone recommend a good BMW Indi near/around Motherwell. Thanks in advance.