35MPH speed warning on P38 Air Suspension

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Sometimes, my range goes into fault mode and the faults won't clear. The fault is both the right hand sensors that measure the height. They provide a reading that is not accepted by the ecu and so register 2 hard faults. I simply jack up under the chassis to obtain a different height where the ecu recognises the reading and then clear the fault and away it goes. I think the height sensors are a variable resistance and when the suspension is bottomed out they are in an area that is not often used and the contact may be poor and therefore an incorrect reading that the ecu can not compute is received. I once ****ed around for weeks and it cost me a fortune in petrol using my 110 petrol, daily until i figured out what to do. I guess i could get me a set of height sensors!!!
 
spadgr said:
Sometimes, my range goes into fault mode and the faults won't clear. The fault is both the right hand sensors that measure the height. They provide a reading that is not accepted by the ecu and so register 2 hard faults. I simply jack up under the chassis to obtain a different height where the ecu recognises the reading and then clear the fault and away it goes. I think the height sensors are a variable resistance and when the suspension is bottomed out they are in an area that is not often used and the contact may be poor and therefore an incorrect reading that the ecu can not compute is received. I once ****ed around for weeks and it cost me a fortune in petrol using my 110 petrol, daily until i figured out what to do. I guess i could get me a set of height sensors!!!
Click to expand...

Correct or if a bump stop has come adrift the suspension may drop to a position that is out of range on access settings and a fault would be thrown up.
 
Fitted fully reconditioned compressor. Body goes up now, but when I start the engine it lights up on the motorway light, I can send it to normal and to high but when I want to come back down I have to press in the switch. it will then come down to normal and motorway but not to exit level. I have put a lynx diagnostics on it and it says Fault code 0027, and Vehicle has moved ( Permanent ).
 
That operation is almost correct.

Motorway height can only be manually selected with the hold lamp illuminated.

As for when you start the car it shows it in motorway, this could mean the car has dropped a little while parked up and the system assumes it is in motorway position so lights the lamp....

The ECU should know it was previously in Standard height and the standard lamp should flash, if it doesn't rise to Standard automatically and you have to press the rocker to get it up to Standard....generally that means the ECU is confused as to what height it is meant to be at.....as it remembers it was at Standard, and now it is at Motorway, and it is asking the driver which one to go for.

That fault code is almost always present and can be ignored.....it just states the car has moved...thats all.
 
I must have had a senior moment the lynx does give the code fault reason. 0027 is Vehicle has moved ( F--- ) knows where it went.
I cleared the code and it has not come back, all I need to do now is sort out the ride hieghts. Still trying to get the Easunlock to work.
Many thanks to you all , I have forgotten about steel springs oops sorry I wasn't going to mention that
 
Radar1946 said:
I must have had a senior moment the lynx does give the code fault reason. 0027 is Vehicle has moved ( F--- ) knows where it went.
I cleared the code and it has not come back, all I need to do now is sort out the ride hieghts. Still trying to get the Easunlock to work.
Many thanks to you all , I have forgotten about steel springs oops sorry I wasn't going to mention that
Click to expand...

Vehicle has move means nothing other than it has self levelled. And that sensor levels have changed since it was last switched off. It is not a fault.
 
Radar1946 said:
Cheers, Any idea as to what the readings should be set at on the easunlock program.
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Read the instructions that came with EASunlock that gives you the upper and lower beat counts for each height front and rear, keep 5 above or below minimum or maximum for any given height or you will get problems. Sensor values will vary slightly with each car no two will be the same, Although there is a default written into the ECU if you exceed the minima or maxima for any selected height the ECU will revert to the default and you will have to start again. Heights from wheel centre to wheel arch lip for each height are listed in my EAS how to. Don't sit in the car to set beat count then get out to measure do it all from outside the car.
 
Done all the checks in your fault list. Fitted new compressor, set the heights as described on easunlock. What is happening now is I switch the ignition on and the level lights goes to motorway ride. Nothing goes up or down without the engine running. If I start the engine I can move it to normal ride, high ride, and back down to normal, then I have to push the button in next to the height button to go down to motorway ride. No matter what I press it wont go down to exit. Thinking I had messed it up with the easunlock I took it to a range rover garage and they reset it back to factory settings £85. It is still doing exactly the same as before it went in for diagnostics, now as well it makes a hell of a bang on the near side rear when I go over a medium sized bump. I am so close to doing a conversion.:mad:
 
Is it possible the bang is a bush or a broken shock absorber, which may have upset in the first place?

I was having a clonk off the Clio and it turned out the "other" drop link had gone o_O

I was convinced it was something expensive....
 
A wise old man once told me,

"Just because it's new doesn't mean it isn't faulty.... It just means it hasn't previously been used!"

We had a brand new alternator, fitted it and the car was as bad. Swapped for another brand new one and the same....turned out to be a faulty batch!
Radar1946 said:
No, The shock absorbers are brand new a few weeks ago. and all new bushes on the suspension.
Click to expand...
 
Radar1946 said:
Done all the checks in your fault list. Fitted new compressor, set the heights as described on easunlock. What is happening now is I switch the ignition on and the level lights goes to motorway ride. Nothing goes up or down without the engine running. If I start the engine I can move it to normal ride, high ride, and back down to normal, then I have to push the button in next to the height button to go down to motorway ride. No matter what I press it wont go down to exit. Thinking I had messed it up with the easunlock I took it to a range rover garage and they reset it back to factory settings £85. It is still doing exactly the same as before it went in for diagnostics, now as well it makes a hell of a bang on the near side rear when I go over a medium sized bump. I am so close to doing a conversion.:mad:
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The bang must be something pretty obvious and needs finding. Nothing will happen unless engine is running. When ignition is turned on you should get all the lamps lit. When engine is started EAS does it's self check the lock button should light and go out then if no faults were found, all lamps will go out other than the AT lamp and the GOING TO lamp, the AT lamp should be solid and the GOING TO lamp should flash. When the GOING TO height is reached the at lamp will go out and the attained height lamp be solid. Think you need to get someone to look at it that knows what they are doing. Is the lock button lit if it is press it off. Lock button is only used to lock the suspension when towing or for manually selecting motorway height, which cannot be selected other than automatically at speeds over 50 MPH with it off.
 
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Thanks, I cant afford to pay anymore out on sorting it out. I have just paid £85 for nothing. The bang on the n/s rear is as though the suspension is hitting the chassi . Totally peed off, going to change to springs.
 
Radar1946 said:
Thanks, I cant afford to pay anymore out on sorting it out. I have just paid £85 for nothing. The bang on the n/s rear is as though the suspension is hitting the chassi . Totally peed off, going to change to springs.
Click to expand...

Have a look and see what it is must be fairly obvious. If the lock button is active you can select motorway and standard. It will NOT go to access. You CANNOT select motorway unless it IS active.
 
I have tried everything, looked everywhere, can't find anything amiss, It wont go into access under any curcumstances, When I start the engine the lights start on motorway then settle down on normal.
As I said I have just paid Craddocks £85 for nothing. I thought they should know what they are doing. Do you know of any one who could fix it for a reasonable price. I don't mind how far I travel.
 
I think someone on here got a cheap webcam off eBay and with a couple of cable ties rigged it up under the car and filmed the bottom of the car trying to recreate the problem. Might be worth a try?

There is a harmonic damper at the back under there somewhere. That's solid, is it?
 
Ok just been out so checked mine. With the lock button engaged you can indeed change to all heights whilst stationary. Access, low, standard and high. With it disengaged you can only select access, standard and high. I also got a little bump when going to access will have to look at that. I suggest you use your EASunlock to check the settings for each height and correct them. Instructions for minima and maxima of each setting is in the instructions that came with EASunlock. Measurements from centre of wheel to wheel arch lip are in my how to. Check them. How did Craddocks set the heights to factory standard if the car won't go to access?
 
Good question I shall go and ask them, they did say they had to measure three times which suggests one was not done. I have checked the easunlock heights once but I will try again
The harmonic damper is solid, I have a camera I use for flying model airplanes I shall try using it underneath.
I'm not short of a bob or two i'm saying I can't afford to keep paying for something that does not work. can you?. Cheers
 
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