SLROC Forum

General Category => TECHNICAL CHAT => Topic started by: DRH on March 22, 2019, 09:09:12 PM

Title: Help wanted - Disco 3 lowering itself
Post by: DRH on March 22, 2019, 09:09:12 PM

As above my Disco 3 has started lowering itself without warning while driving.

If you switch the ignition off and restart it, it resets right away.

Airbags not losing air overnight.

Any pointers before I start getting in about it.

Thanks Duncan

Title: Re: Help wanted - Disco 3 lowering itself
Post by: Dave T on March 25, 2019, 12:48:32 PM

I had a similar problem years ago, it turned out to be a dodgy earth behind the passenger side tail light, when I selected reverse or put the rear wiper on it fed back through the electrics and lowered the suspension. Try and see if there is a common thing you are doing when it happens

Title: Re: Help wanted - Disco 3 lowering itself
Post by: DRH on March 25, 2019, 03:57:31 PM

Cheers - there don't seem to be any leaks but it has started displaying a message suspension raising slowly so beinning to wonder if it's something electrical or a comopressor issue.

Title: Re: Help wanted - Disco 3 lowering itself
Post by: Dave T on March 25, 2019, 04:38:36 PM

Have you checked for codes?

Title: Re: Help wanted - Disco 3 lowering itself
Post by: DRH on March 25, 2019, 08:46:31 PM

Checked tonight and when it happens it keeps coming up with C1A07 - cross articulation too large signal compare failure
 sometimes it also comes up with code UO421 Invalid data received from ride height level control module - unexpected operation

Need to get it to my work to get under it to check wiring etc so thinking about pulling the fuse temporarily

Title: Re: Help wanted - Disco 3 lowering itself
Post by: A.J.M on March 25, 2019, 08:52:01 PM

When driving, does it “bong” then drop down and put up a yellow suspension light on dash?
If you have an HSE or SE spec with off road system enabled. You can look at all 4 wheel corners on the screen.
If one has a red line at it, generally that’s a faulty one.

Mine had similar codes, turned out to be front left height sensor on the way out.

Title: Re: Help wanted - Disco 3 lowering itself
Post by: DRH on March 25, 2019, 10:30:50 PM

Bongs and goes right to red (no amber).  On screen the left hand rear turns red with rest staying white but by the time I stop the car everything's down.  Switch off and Start up again and everything builds up again but only goes half a mile before going through it again

Title: Re: Help wanted - Disco 3 lowering itself
Post by: DRH on April 08, 2019, 11:21:35 AM

All sorted now - thanks to Bobby at GEMM - the n/s/r ride height sensor was faulty and the multiplug was damaged but the system needed recalibrated. 

All re-programmed and the car behaving like it should again.