Member Since: 14 Oct 2013
Location: 'Sunny' Zomerset
Posts: 9412
Suspension fault thoughts
Hi all,
I'm currently getting the dreaded suspension bong warning, every time I drive.
It doesn't happen straight away, but usually eventually comes up on every trip.
Message states "Suspension fault, normal height only". It doesn't affect driving, other than the warning light
I've read the codes and I see this:
Suspension
C1A20-64 (6C) Pressure increases too slow when filling reservoir - Algorithm based failure - signal plausibility failure
( on 22-07-2023 00:02:28 at 232916 km )
One other piece of info, recently swapped out front lower arms and had 4 wheel alignment done, could be related?
Thoughts appreciated Iggy/Ieuan
Current LR =
2015 RR Sport Autobiography
&
1992 Land Rover Defender Camper
- Gone but not forgotten:
MY10 D4 GS
MY05 Disco 3 'S'
MY14 FL2 HSE manual in Blue
MY15 Disco 4 HSE Lux in Santorini Black
MY08 Disco 3 SE manual in Buck Blue
1960 Series 2 88" (No idea why I sold it!)
20th Aug 2021 4:19 pm
jc_uk
Member Since: 19 Apr 2007
Location: Cumbria
Posts: 314
Hi,
Sounds like the compressor..........
Can you select the different heights and see the compressor pump up the corners.....
Plus a couple of resets.......
Cannock Spares used to do good deals on replacement ones......
Or you can try the DIY service route to dry out the desiccant.
JC
20th Aug 2021 4:28 pm
Sea Raider
Member Since: 01 Nov 2016
Location: None
Posts: 4450
Could be a crack on the dryer end cap
Or corroded out air tank
I've had both
20th Aug 2021 4:40 pm
ronp
Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15243
Re: Suspension fault thoughts
Iguana wrote:
Hi all,
I'm currently getting the dreaded suspension bong warning, every time I drive.
Oh dear, how sad, never mind.
Seriously though [a long shot] you havent changed any bulbs recently have you?
In my D3 days it was known for a simple bulb change to set off all sorts of bongs, particularly with suspension issues.
So much so, in my travels if a bulb went I'd take it into the nearest dealer and get them change it.
Cost me then about £10 a shot, but then if anything went bong, it was their issue to source and sort.
As said, a long shot!...... always on the road less travelled 🚧
20th Aug 2021 4:53 pm
jc_uk
Member Since: 19 Apr 2007
Location: Cumbria
Posts: 314
Member Since: 06 Mar 2017
Location: Lost
Posts: 4907
Re: Suspension fault thoughts
Iguana wrote:
Hi all,
I've read the codes and I see this:
Suspension
C1A20-64 (6C) Pressure increases too slow when filling reservoir - Algorithm based failure - signal plausibility failure
( on 22-07-2023 00:02:28 at 232916 km )
One other piece of info, recently swapped out front lower arms and had 4 wheel alignment done, could be related?
Thoughts appreciated
If there are no leaks present (reservoir for example) then most likely it's just the drier is compacted and unable to handle the air flow. If its a Hitachi it could also have a cracked cap as Sea Raider says, either way it's an easy fix but don't let it drag on or you will risk damage to the compressor.
Recent suspension work is not related. yµ (idµ - eAµ) ψ=mψ
20th Aug 2021 7:36 pm
Iguana
Member Since: 14 Oct 2013
Location: 'Sunny' Zomerset
Posts: 9412
Cheers all, suspension works fine, with or without the warning light on.
I'll check for cracks next
@Ron... Iggy/Ieuan
Current LR =
2015 RR Sport Autobiography
&
1992 Land Rover Defender Camper
- Gone but not forgotten:
MY10 D4 GS
MY05 Disco 3 'S'
MY14 FL2 HSE manual in Blue
MY15 Disco 4 HSE Lux in Santorini Black
MY08 Disco 3 SE manual in Buck Blue
1960 Series 2 88" (No idea why I sold it!)
21st Aug 2021 3:36 pm
Admirable
Member Since: 19 Jul 2015
Location: Fife
Posts: 1033
If the cap is cracked it's likely to be between where the pipes connect at the blue and orange connections.
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2462
It could also be the air dryer granuals breaking downAndrew
D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE
21st Aug 2021 5:15 pm
Iguana
Member Since: 14 Oct 2013
Location: 'Sunny' Zomerset
Posts: 9412
Iggy/Ieuan
Current LR =
2015 RR Sport Autobiography
&
1992 Land Rover Defender Camper
- Gone but not forgotten:
MY10 D4 GS
MY05 Disco 3 'S'
MY14 FL2 HSE manual in Blue
MY15 Disco 4 HSE Lux in Santorini Black
MY08 Disco 3 SE manual in Buck Blue
1960 Series 2 88" (No idea why I sold it!)
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