Help please, I am having problems with the suspension on my 2002 RR l322 td6. She is sitting at normal height and the orange led on the selector switch is indicating normal height, But as I drive a meesage appears on the dash saying something like "off road height 30 mph" and the message changes to suspension inactive. I clear the stored fault "articulation invalid" but it keeps coming back, any ideas where I start looking. Thanks

Likley a failed height sensor. A diagnostic scan will identify which one it is or look at the 4x4 display ( not sure if a 2002 model has this) to see if one of the heights is out of line with the others. 2012 TDV8 Vogue (L322)