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  #1  
Old 01-09-2022, 08:13 AM
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Self level suspension problems

Thankyou to anyone that reads this and can help
So Im back here again after more problems with my beloved e53 i have the self level suspension which just controls the rear i have normal coil springs on the front.
The x started coming up with self level susp inact.
the pump would come on if i started the car and turned it off within a couple minutes before the error came up but once error showed itself the pump wouldn’t kick in
I had the car plugged in and scanned for codes only showed an error for the height sensor but the air bag on the opposite side was completely deflated
Bloke who plugged it in started the re calibration but exited it before completing as he noticed the completely empty air spring.
Since that the air compressor never kicked in again
So i changed the air spring and the one that seemed blown once removed seemed to hold air pretty well.
Started the car and no luck
I bridged the wires to force the pump on and it was working but i didn’t notice the x lift or inflate.
I don’t know what to do from here could it be the sensor still?
Possibly the compressor rings?
Compressor solenoid?
Or should i just go coil spring conversion?
If i go coil spring cobversion how can i turn off the self level inact error message ?
Thanks for any help i may get im really at a loss right now


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  #2  
Old 01-09-2022, 10:26 AM
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Filling the tank unrelated to filling the air spring. FYI air bag is Wyatt deploys in an accident not what holds up the car.

Scanner like foxwell can command the car to fill the springs even when the sensors aren't working properly.

The arms that connect the sensors to the control arm rust and malfunction so you should pull them off and clean/refurbish them and make sure they are both vertical and straight. (and smoothly operating).

Quite regularly somebody posts on xo where the arm gets turned horizontal puts the sensor arm vertical and will stop working
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Old 01-09-2022, 02:21 PM
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Quote:
Originally Posted by andrewwynn View Post
Filling the tank unrelated to filling the air spring. FYI air bag is Wyatt deploys in an accident not what holds up the car.

Scanner like foxwell can command the car to fill the springs even when the sensors aren't working properly.

The arms that connect the sensors to the control arm rust and malfunction so you should pull them off and clean/refurbish them and make sure they are both vertical and straight. (and smoothly operating).

Quite regularly somebody posts on xo where the arm gets turned horizontal puts the sensor arm vertical and will stop working


Thanks for your input, force of bad habit calling it an air bag
I cleaned up both arms regreased the arms that connect i was unable to remove the actual sensor.
Do i need to unbolt the bracket that holds the sensor first as even this seems impossible to remove.
But they both seem fine smooth and vertical on both sides.
Ive read what i can about these problems tried everyones ideas I’ve read about.
But struggling to finding a definitive answer


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Old 01-09-2022, 05:05 PM
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I wouldn't unbolt the sensor unless you need to replace it.

Proper scanner will report the voltage reading from the sensor and with arm removed you can swing the sensor and watch the voltage.

Did you take the push arms off to clean out the rust?
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Old 01-09-2022, 07:26 PM
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It is possible that when the suspension is fully extended and then lowered to the ground that a sensor arm(s) will go over center the opposite direction than it should. When that happens the air suspension inactive light will appear.

For clarification- is one side of the vehicle at normal ride height? Or are both sides bottomed bottomed out? I assume you have checked the fuses.

Perhaps this link will be helpful. https://www.suncoreindustries.com/pr...roubleshooting
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Old 01-10-2022, 04:57 AM
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Quote:
Originally Posted by bcredliner View Post
It is possible that when the suspension is fully extended and then lowered to the ground that a sensor arm(s) will go over center the opposite direction than it should. When that happens the air suspension inactive light will appear.

For clarification- is one side of the vehicle at normal ride height? Or are both sides bottomed bottomed out? I assume you have checked the fuses.

Perhaps this link will be helpful. https://www.suncoreindustries.com/pr...roubleshooting


Thankyou and both sides are lower but drivers side is completely deflated passenger side is about an inch higher
And sorry but the link didn’t work when i clicked on it
Thats a good point about the sensor being over rotated but how will i know how to get them to their correct point if that makes sense or should i just look into getting these calibrated?


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Old 01-10-2022, 11:08 AM
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Self level suspension problems

The bar connecting the sensor to the control arm needs to be mostly vertical and the arm on the sensor should be mostly Horizontal.

Also I think the link worked you just didn't scroll down. The top of the page has a set of selector choices ignore that Ana scroll down.
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Old 01-10-2022, 12:32 PM
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Quote:
Originally Posted by andrewwynn View Post
The bar connecting the sensor to the control arm needs to be mostly vertical and the arm on the sensor should be mostly Horizontal.

Also I think the link worked you just didn't scroll down. The top of the page has a set of selector choices ignore that Ana scroll down.


The link is just coming up error 2010
Thinking im a bot attack by the looks of it
Ill have to double check the sensors but from when i looked the other day I’m fairly certain they were orientated the correct way etc but i may be wrong.
Thankyou for your help


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Old 01-10-2022, 12:35 PM
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Photo will confirm. Real-time voltage reading also will help. I forgot if you have scanning ability that includes real-time data
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Old 01-10-2022, 01:01 PM
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Originally Posted by andrewwynn View Post
Photo will confirm. Real-time voltage reading also will help. I forgot if you have scanning ability that includes real-time data


I will get photo when i get a bot of daylight to take the wheel off
And im looking for someone to scan the x the last bloke seemed like he didn’t care to be honest


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