Air suspension too high

Alistair phillips · Sep 20, 2020

I desperately need to calibrate my suspension on a lr322 2003 Range Rover .I have a diagnostic tool it’s a snap on ethos .The car is sitting to high and won’t allow me to enter in the heights from the wheels as the parameters are too high and I have already burst an air bag.Can anyone talk me through the proper procedure before I give up on life.Any help would be most appreciated.

RangeRoller dt · Sep 20, 2020

Have a good listen to this guy

Alistair phillips · Sep 20, 2020

RangeRoller dt said:
Have a good listen to this guy

Thanks for your reply rangeroller I did see their post and it’s very helpful although he states that you have to use certain diagnostic tools for certain lr 322’s.I managed this afternoon to get it back down from the moon and it’s sitting quite acceptable which I will leave for the moment at least it’s drivable.Thanks again it’s much appreciated.

RangeRoller dt · Sep 20, 2020

You also have to take wheel size into consideration
I found this but detail is hard to make out

gold rover · Sep 20, 2020

Isn't there something from @Saint.V8 on this? Quick search might help you @Alistair phillips ? He has all the numbers and process on a thread somewhere

Alistair phillips · Sep 20, 2020

RangeRoller dt said:
You also have to take wheel size into consideration
I found this but detail is hard to make out
View attachment 219648

Thanks for your reply and yes it’s hard to make out but I was really needing the process to get to these sizes,it doesn’t seem to work by measuring the size from the bottom of the rim to the wheel arch or I’m doing something wrong also I’m using a snap on tool whether that’s not the correct one I don’t know...thanks anyway it appreciated.

Alistair phillips · Sep 20, 2020

gold rover said:
Isn't there something from @Saint.V8 on this? Quick search might help you @Alistair phillips ? He has all the numbers and process on a thread somewhere

I will have a look mate thanks

gold rover · Sep 20, 2020

Alistair phillips said:
I will have a look mate thanks

Welcome.

gold rover · Sep 20, 2020

@Alistair phillips What I've found from Ant , "On the L322, when entering the calibration process, the vehicle raises to a datum height......you then measure the height of the vehicle as indicated on the calibration information (for the All Comms it is bottom of wheel rim to middle of wheel arch) and put this into the software. The ECU knows the datum position as this is hardwired into the ECU, it then works out what height the vehicle is at from the measurements you have provided....the ECU then extrapolates the various ride heights from this information - the rest is done automatically".
He also has a numbers diagram somewhere on here

Alistair phillips · Sep 20, 2020

gold rover said:
@Alistair phillips What I've found from Ant , "On the L322, when entering the calibration process, the vehicle raises to a datum height......you then measure the height of the vehicle as indicated on the calibration information (for the All Comms it is bottom of wheel rim to middle of wheel arch) and put this into the software. The ECU knows the datum position as this is hardwired into the ECU, it then works out what height the vehicle is at from the measurements you have provided....the ECU then extrapolates the various ride heights from this information - the rest is done automatically".
He also has a numbers diagram somewhere on here

I wish it was this easy mate,when I put the diagnostic to the car it does not go the the ultimate height I think I will have to try another tool that would carry out this procedure that you mention then it would be an easy set up.Thanks bud much appreciated.

mon

backinblack · Sep 20, 2020

That's what annoys me with the various tools, why don't they all just use the centre of the wheel for the measurements which would make the wheel size irrelevant.

Also another forum member had problems calibrating with a Snapon tool.

Alistair phillips · Sep 20, 2020

Aye your right mate such a pain in the backend but we will overcome it.....I hope.

backinblack · Sep 20, 2020

Alistair phillips said:
I wish it was this easy mate,when I put the diagnostic to the car it does not go the the ultimate height I think I will have to try another tool that would carry out this procedure that you mention then it would be an easy set up.Thanks bud much appreciated.

mon

IMO it should go to a standard height rather than offroad.

Alistair phillips · Sep 20, 2020

I actual burst the front bag it was that high trying to calibrate with a snap on diagnostic tool!,

gold rover · Sep 20, 2020

backinblack said:
That's what annoys me with the various tools, why don't they all just use the centre of the wheel for the measurements which would make the wheel size irrelevant.

Also another forum member had problems calibrating with a Snapon tool.

I knew snapon had been mentioned in recent history, but couldn't remember if it was because it did, or didn't , work

backinblack · Sep 20, 2020

Alistair phillips said:
I actual burst the front bag it was that high trying to calibrate with a snap on diagnostic tool!,

I thought they had a pressure release valve to stop that happening

backinblack · Sep 20, 2020

gold rover said:
I knew snapon had been mentioned in recent history, but couldn't remember if it was because it did, or didn't , work

There was a chap from liverpool with one but I ended up taking my Foxwell over and did it first time. Unfortunately it was going dark so didn't have time to look at the Snapon.

Alistair phillips · Sep 20, 2020

backinblack said:
I thought they had a pressure release valve to stop that happening

No they don’t which I think is terrible these things can kill you it shouldn’t be allowed

Alistair phillips · Sep 20, 2020

gold rover said:
I knew snapon had been mentioned in recent history, but couldn't remember if it was because it did, or didn't , work

Defiantly the latter

RangeRoller dt · Sep 20, 2020

GR is right other than the height settings for the sensors there’s is a calibration setting. sometimes people use it to try and higher the overall height as this effects all levels.

The pressure relief valve should kick in before they blow so somethings been tampered with I reckon

Air suspension too high

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