BMW E70 Air Suspension

[Greydog]

Well I was feeling smug as the X has been running so well but it must have been talking to Stu's 😁

Wednesday the passenger rear suspension decided to inflate to the max 5" higher than the drivers side had to drive home but because the cassis is being twisted it begins to rapidly wear the inside edge of the passenger rear and the outside edge of the drivers front !!

New tyres are booked anyway but could do without this. Get home OK next morning plug in and using ISTA look for issues a few I knew of (Glow plug controller and rear fog light) but no air suspension errors darn. Ride height sensors tested OK Compressor OK Control Unit OK ?? So into the diagnostic's program and calibrate and reset the ride height. Then an hour ago it did it again passenger side to the max but this time the airbag gave up and burst. 

Looks like I have a fun week ahead first find out why ? Then replace the airbags and reset everything again maybe change the ride height sensor as a precaution

Update later

Dave

[X5smw]

…. Mine’s just passed the MOT! 😂😂😂

[X5smw]

Sounds like the sensor is giving false information… not showing a fault, just wrong data. 
change the sensors as well as the airbags. 
have a good week mate.. that will keep you busy! 
 

[Greydog]

Morning, Update 1

Lots of digging both ride height sensors test out correctly compressor is fine the only thing in my digging testing head scratching and reading is the Solenoid Valve on the compressor. Although the solenoid valve tests OK my conclusion is one side has been sticking and not allowing the lowering/levelling function.

Course of action now is 2 new air springs 2 new ride height sensors and a new solenoid valve block, once fitted inflated leak tested and calibrated things should be good again

Dave