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DISCO3.CO.UK > Faults & Fixes (D4)

2010 D4 suspension fault when lowering

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F355GTS

Member Since: 10 Nov 2008
Location: North Hampshire
Posts: 849

2010 Discovery 4 3.0 TDV6 HSE Auto Buckingham Blue

2010 D4 suspension fault when lowering

Hi getting a yellow suspension fault warning when lowering from normal to access height and car stops lowering, not always fairly common and seems to be getting worse

IID shows error C1A13-64 (2C) Pressure does not decrease when venting gallery - algorithm based failure

Restarting the car resets the fault and shows the height position between normal and access and a press of the button will return it to normal or access as chosen

Any ideas?

thanks

Mark Mark

16th Jun 2018 9:39 am

Skynet

Member Since: 23 Jul 2014
Location: Melksham, Wiltshire
Posts: 868

2016 Discovery 4 3.0 SDV6 SE Auto Alaska White

Check nothing is blocking the vent pipe? Perhaps consider buying a service kit for the compressor? Dave
D3 2006 HSE, Cairns Blue - gone
D4 2016 SE, White

Wessex 4x4 Response
http://www.wessex4x4response.org.uk/

16th Jun 2018 12:43 pm

F355GTS

Member Since: 10 Nov 2008
Location: North Hampshire
Posts: 849

Hi could somebody point me to where I will find the vent pipe so I can check it's not blocked

thanks Mark

8th Aug 2018 9:21 am

F355GTS

Member Since: 10 Nov 2008
Location: North Hampshire
Posts: 849

OK checked the vent pipe and no obvious blockage, blew it out with a airline too.

Sometimes it'll start to lower then thinks there is something under the car so switches to extended mode, can somebody advise me what triggers the car to think there's something underneath?

If I lower the car using the IID tool it seems to work fine but now fails on lowering most times via the switch even after a restart

Any and all advice welcome as to the next step

thanks Mark

18th Aug 2018 5:00 pm

DiscoJeffster

Member Since: 27 Feb 2016
Location: Perth
Posts: 204

2010 Discovery 4 3.0 TDV6 HSE Auto Nara Bronze

As I understand it it’s expecting to see each height sensor lowering. Where one doesn’t change as the vehicle drops it believes it’s obstructed and raises. Your symptom would lead me to suspect one height sensor is not working correctly.

19th Aug 2018 10:26 am

F355GTS

Member Since: 10 Nov 2008
Location: North Hampshire
Posts: 849

I should have updated htis

The extended mode fault was caused by the height sensor units being crudded up, lot's of WD40 and freeing up has cured this. The venting problem was cured with a service kit for the air pump on the compressor, think it's the new desiccant that solves the issue

I bought this kit

https://www.ebay.co.uk/itm/DISCOVERY-3-AIR...:rk:1:pf:0 Mark

9th Nov 2018 6:13 pm

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