Driving home yesterday at about 5pm and this warning came up and the suspension lowered causing a very bumpy and slow drive home, pic here;

Click image to enlarge

Try LR Assistance first ?

At least they come to you......

The fault is not there now though, was only whilst driving last night and all ok today  "UNDERSTEER" ----is when you hit the fence with the front of the car.
"OVERSTEER" ------is when you hit the fence with the rear of the car.
"HORSEPOWER" ----is how fast you hit the fence.
"TORQUE" -----------is how far you take the fence with you.

I often think the 405 is like driving a pc on wheels, ok most of the time, plays up some of the time, sometimes reverts to normal after swiitching off and on but eventually needs professional help. In your case though, I'd be straight on to the MD.

I used to get this on my 1st L322 15 years ago, disconnecting the battery negative lead for a few seconds and quickly reconnecting it cleared the issue - in this case it was damp in the rear spare wheel well that caused the issue 2021 L405 Vogue SE 4.4 V8 DIESEL ~ #17

Japseroony wrote:

The fault is not there now though, was only whilst driving last night and all ok today

The fault will be stored  Last night I lay in bed looking up at the stars in the sky and I thought to myself, where,s the f**king ceiling!!

Called the selling dealer who said to call LR Assist of which I did - no LR chaps available until tomorrow but got an AA chap coming this afternoon

Would prefer a LR chap but I am away tomorrow and not prepared to drive the car for anything other than short journeys so lets see what the AA say  "UNDERSTEER" ----is when you hit the fence with the front of the car.
"OVERSTEER" ------is when you hit the fence with the rear of the car.
"HORSEPOWER" ----is how fast you hit the fence.
"TORQUE" -----------is how far you take the fence with you.

So the AA came, plugged in his diagnostic tool and said "there is a suspension fault" - thanks for that

He then spoke to the LR Assist chap on the phone who said there is a software update so to book it in, which I have at Team Valley LR on Wednesday - I will report more as and when I know  "UNDERSTEER" ----is when you hit the fence with the front of the car.
"OVERSTEER" ------is when you hit the fence with the rear of the car.
"HORSEPOWER" ----is how fast you hit the fence.
"TORQUE" -----------is how far you take the fence with you.

Mine also behaves just like a PC at times and as robelar suggested turn it off and on has solved a number of things for me. Two recent ones I can remember:
1: Back wiper not working.
2: Sat nav got lost
both went away after a stop and start (off and on)

but it sounds like yours may be more serious.  Geoff

Isn't there an over the air update on the later models? Mine updates but it may be just the infotainment system. I don't know if it can do more involved stuff.
If I were you I'd swap it for a 17MY SDV8 in blue. I'll keep my eye out.

So, just had the car in to Team Valley LR and they have fixed the problem (hopefully).

Apparently there is a software update for the 2020 MY that is for the Body Control Unit, and some others for other parts of the car, that effects the suspension.

All updated and the fault saying the spare was flat is also fixed.

They are a decent bunch down at Team Valley so hopefully everything will be ok but will keep you guys informed of further issues as and when - notice I did not say if lol  "UNDERSTEER" ----is when you hit the fence with the front of the car.
"OVERSTEER" ------is when you hit the fence with the rear of the car.
"HORSEPOWER" ----is how fast you hit the fence.
"TORQUE" -----------is how far you take the fence with you.

Huwrhys wrote:

Isn't there an over the air update on the later models? Mine updates but it may be just the infotainment system. I don't know if it can do more involved stuff.
If I were you I'd swap it for a 17MY SDV8 in blue. I'll keep my eye out.