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#1
11-28-2015, 09:57 PM
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Self leveling suspension question
Bluetooth..another thread Now the self leveling inactive message.... So last night I work with my friend who is a BMW tech...my car is not losing air, the car stays at the same position overnight..we tested the values on the sensors all looked good, 3-4volts, Except for the right front which was at 1:09.. I thought that was odd, also with the car up in the air we noticed that same arm was basically flipped backwards..we thought that was the issue. We reset every thing, we manually filled each corner, with success, and calibrated the suspension. All was great, I drove about 39 miles, and boom it popped back on..called my tech back he is stumped ( we are going to keep at it) but wanted to see what was going on. I hooked up my BMW 1.4 scanner and I did read a fault, we didn't see last night.--- "RESERVOIR PRESSURE REMAINS CONSTANT WHEN FILLING OF RESERVIOR IS REQUESTED" So my question to the experts here...what does that mean? The accumulator had 14 bar of pressure,again everything seemed to operate correctly? And yes I have searched, and I have done all my du dillegence, we are just stuck..car rides good, doesn't loose air, the ride height button blinks when I tried to raise or lower the car....  Please help if you can...thanks
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2013 X5 35D 2015 F350 2009 E90 M3 2007 GT3 1996 993 C4S 1991 964 Turbo 1994 D90 1989 E30 M3 1988 E30 M3 1972 cutlass supreme -sold- 1993 E34 S52 supercharged wagon 1988 E30 M3 henna 2002 E46 M3 1997 E36 M3 2001 X5 2006 4.8is 1998 e36 M3 track car 1995 e36 M3 track car 
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#2
11-28-2015, 10:29 PM
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Seems like your pump is weak. Does it seem to run a lot? It should not run normally.
Also, this and your ULF module causing issues, have you really checked your battery and alternate. Strange shit happens to our cars with bad alt and or battery. Read my sic to unlock your obc and monito voltage.
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2006 4.8is, Black on White. SOLD Sniff Sniff. 2017 F85 x5m, Black on Red. BEAST MODE "The older we grow the greater becomes our wonder at how much ignorance one can contain without bursting one's clothes." - Mark Twain Unlock OBC post 5
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#3
11-28-2015, 11:33 PM
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Quote:
Last night we were able to lift each corner manually...wtf? This SLS sh*t is for the birds..if I had leaks wouldn't my car sag, some where? I took measurements and will measure again in the morning to see... 27.5 inches rear 27.25 inches front. Measuring from bottom of rim... I am stumped..
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2013 X5 35D 2015 F350 2009 E90 M3 2007 GT3 1996 993 C4S 1991 964 Turbo 1994 D90 1989 E30 M3 1988 E30 M3 1972 cutlass supreme -sold- 1993 E34 S52 supercharged wagon 1988 E30 M3 henna 2002 E46 M3 1997 E36 M3 2001 X5 2006 4.8is 1998 e36 M3 track car 1995 e36 M3 track car
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#4
11-29-2015, 12:20 AM
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Yea pump seals might be shot. There is a rebuild kit on eBay. Search here for air pump rebuild links.
__________________
2006 4.8is, Black on White. SOLD Sniff Sniff. 2017 F85 x5m, Black on Red. BEAST MODE "The older we grow the greater becomes our wonder at how much ignorance one can contain without bursting one's clothes." - Mark Twain Unlock OBC post 5
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#5
11-29-2015, 12:38 AM
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Quote:
__________________
2013 X5 35D 2015 F350 2009 E90 M3 2007 GT3 1996 993 C4S 1991 964 Turbo 1994 D90 1989 E30 M3 1988 E30 M3 1972 cutlass supreme -sold- 1993 E34 S52 supercharged wagon 1988 E30 M3 henna 2002 E46 M3 1997 E36 M3 2001 X5 2006 4.8is 1998 e36 M3 track car 1995 e36 M3 track car
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#6
11-29-2015, 02:37 AM
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Ive programmed a bunch of different E53s with 4 corner leveling, if everything isnt working right you can get finicky issues as the one your having.
Ive delt with 2 having the same issue as yours. It most likely is a weak pump and on one of them this "workaround" worked, on the other it threw error 2 days later and was out of spec again. Program the ride height to where you want it and dont mess with the offroad mode and access mode on the button by leaving it be. As long as your bags arent leaking a bunch if you program it and the system maintains the correct level then your good for a while or until you get a chance to rebuild the compressor. From the one it did work on its been maintaining the height fine (been a few months now) since i calibrated it cause it was all off after a shop had it and couldnt get it level all around.
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2006 X5 4.8is Fully Loaded  
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#7
11-29-2015, 10:50 AM
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Quote:
__________________
2006 4.8is, Black on White. SOLD Sniff Sniff. 2017 F85 x5m, Black on Red. BEAST MODE "The older we grow the greater becomes our wonder at how much ignorance one can contain without bursting one's clothes." - Mark Twain Unlock OBC post 5
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#8
11-29-2015, 10:56 AM
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That exact code is the pump seals being shot - you need a rebuild kit for the compressor or a new compressor - was my same issue I chased for 6 months about 4 years ago - EHC 74 right?
It will pump up manually but be slow - the module needs to see it working within a specific time frame/pressure, if its too low it will throw that code and deactivate. Rebuild or replace the compressor, clear the codes, and have working air suspension. Period.
__________________
2018 Ram 2500 6.7L Cummins 68RFE 19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed 2013 X5 35D (CEO's) - Born on 5/17/2013 - 82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards
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#10
11-29-2015, 01:16 PM
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Quote:
Sweet! And yes correct code. Anyone in Atlanta have a working pump they want to part with? I would love to fix today!! Today
__________________
2013 X5 35D 2015 F350 2009 E90 M3 2007 GT3 1996 993 C4S 1991 964 Turbo 1994 D90 1989 E30 M3 1988 E30 M3 1972 cutlass supreme -sold- 1993 E34 S52 supercharged wagon 1988 E30 M3 henna 2002 E46 M3 1997 E36 M3 2001 X5 2006 4.8is 1998 e36 M3 track car 1995 e36 M3 track car
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