RadioRay
Member Since: 09 Nov 2023
Location: Hampshire
Posts: 8
  
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| Front suspension up rear down |
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Sorry couldn't find answers on forum
Not sure how my sons discovery 3 got into this position. Front suspension fully extended, rear not extended, center console height shows 🔒. The rear will not rise and front will not lower by height control switch. It was on rear axle stands, front wheel on ground will trying to fix EPB fault, the suspension was at a low height when I began. How do I rest the 🔒 or get into a leave condition again.
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 8th Dec 2023 8:40 pm |
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Worms
Member Since: 24 Sep 2023
Location: Highlands
Posts: 268
 
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Not sure I have an answer to that, but hopefully someone more knowledgeable will be along soon!
I am guessing that you didn't have a scan tool to put it into "build mode" before jacking it up or take out the relevant fuse, so the suspension has levelled the car and then thrown a wobbly when you let it back down. If you don't have a scan tool that can re-set the suspension, then I'd try taking the fuse out for a minute or two, or doing a hard re-set by disconnecting the battery (search on here for advice on how best to perform the hard reset). Not sure if that will work, but it is always worth a try. Previously:
2010 FL2 TD4e GS
‘93 Defender 110 200TDi CSW - still got this, non-runner on SORN.
‘87 Defender 90 4 cyl Petrol
‘83 110 CSW V8 - best ever!
Range Rover 2-door V8 (not sure of year - 4-speed box and vacuum diff switch)
Series III SWB Diesel
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| 9th Dec 2023 7:43 am |
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RadioRay
Member Since: 09 Nov 2023
Location: Hampshire
Posts: 8
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Thanks, Disco are all new to me. Must have missed the bit about taking the fuse out, seems strange that the back didn't extend as well, I'll know next time to remove the fuse if I ever get it level.
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| 9th Dec 2023 4:57 pm |
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Nc1989
Member Since: 28 Apr 2015
Location: Doncaster
Posts: 203
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Surely it’s just locked in access height? Try holding up on the height switch see if it comes out of it. I don’t understand how it would be locked in access height unless that’s how you left it but stranger things have happened.
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| 9th Dec 2023 9:40 pm |
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Nc1989
Member Since: 28 Apr 2015
Location: Doncaster
Posts: 203
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Just re read your original post, if you’ve lowered it to the lowest height setting before starting work I bet you’ve accidentally locked it (by holding down the switch in lowering position). Just hold the switch to raise and it should unlock and then start adjusting the suspension again. They often need to have the switch cycled to kick everything off again after jacking.
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| 9th Dec 2023 9:43 pm |
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RadioRay
Member Since: 09 Nov 2023
Location: Hampshire
Posts: 8
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I did try lowing it a number of times, if rain stays off I'll give it another try tomorrow.
Thanks
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| 9th Dec 2023 9:59 pm |
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Nc1989
Member Since: 28 Apr 2015
Location: Doncaster
Posts: 203
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It’s locked in the lowest ride height selection, make sure you try raising it not lowering it. Need to hold the switch in the raise position to get it out of the locked state.
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| 9th Dec 2023 10:42 pm |
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Worms
Member Since: 24 Sep 2023
Location: Highlands
Posts: 268
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My understanding of all this (which could well be wrong!) was that the air suspension was introduced, in part, as an alternative answer to the Boge self-levelling unit that was fitted to Range Rovers and some Defenders. This meant that the vehicle would remain level front-to-back when towing. If you put a heavy load on the back of the D3, the front will drop to compensate and vice versa. So if you jack up the rear, without removing the fuse (or otherwise locking the suspension), the front will raise to compensate.
My thought was that for some reason, RadioRay's car has simply not re-adjusted once it was lowered again. The rear sensors might have gone beyond their normal range of travel and the front are unable to compensate. It should sort all this out on its own, but if it has locked the system down, it might need some form of external ECU input or re-set to get it working again.
Radioray, have you tried taking it out on the road and simply (carefully) driving it? I think it sometimes sorts itself out over the first few hundred metres. Previously:
2010 FL2 TD4e GS
‘93 Defender 110 200TDi CSW - still got this, non-runner on SORN.
‘87 Defender 90 4 cyl Petrol
‘83 110 CSW V8 - best ever!
Range Rover 2-door V8 (not sure of year - 4-speed box and vacuum diff switch)
Series III SWB Diesel
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| 10th Dec 2023 8:24 am |
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Flack
Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6235
 
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Make sure the two rear height sensor's are not seized on the shafts, they maybe stuck and the car still thinks the rear wheels are at full height.
Flack 
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| 10th Dec 2023 10:18 am |
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von Horst
Member Since: 27 Dec 2022
Location: aneby
Posts: 114
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Worms wrote:My understanding of all this (which could well be wrong!) was that the air suspension was introduced, in part, as an alternative answer to the Boge self-levelling unit that was fitted to Range Rovers and some Defenders. This meant that the vehicle would remain level front-to-back when towing. If you put a heavy load on the back of the D3, the front will drop to compensate and vice versa. So if you jack up the rear, without removing the fuse (or otherwise locking the suspension), the front will raise to compensate.
My thought was that for some reason, RadioRay's car has simply not re-adjusted once it was lowered again. The rear sensors might have gone beyond their normal range of travel and the front are unable to compensate. It should sort all this out on its own, but if it has locked the system down, it might need some form of external ECU input or re-set to get it working again.
Radioray, have you tried taking it out on the road and simply (carefully) driving it? I think it sometimes sorts itself out over the first few hundred metres.
Hi! which fuse are we talking about?
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| 1st Jan 2024 5:29 pm |
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Worms
Member Since: 24 Sep 2023
Location: Highlands
Posts: 268
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I was talking about the suspension fuse in the engine bay fuse box - from memory this is F26, but check the fuse box lid in case yours is different. Previously:
2010 FL2 TD4e GS
‘93 Defender 110 200TDi CSW - still got this, non-runner on SORN.
‘87 Defender 90 4 cyl Petrol
‘83 110 CSW V8 - best ever!
Range Rover 2-door V8 (not sure of year - 4-speed box and vacuum diff switch)
Series III SWB Diesel
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| 3rd Jan 2024 1:33 pm |
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Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1783
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It is the front that is the problem as that would have been extended to try and level the car. Please put it on all four wheels and bounce the front up and down, then as suggested take it for a run.
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| 4th Jan 2024 10:07 am |
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von Horst
Member Since: 27 Dec 2022
Location: aneby
Posts: 114
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Actually thats what I did, I gave up all the trying to mess around, took it for half hour ride and Voila, it sorted itself out!
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| 5th Jan 2024 5:13 pm |
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