Hi all. Question for the experts.

Is 18mm the height difference tolerance between the car's corners when parked in normal mode? I noticed the o/s/r corner of my RRS lowers very slightly when parked for a while. I know it tries to relevel itself but since it was always the same corner, I decided to send it to the dealer even though the height difference between left and right sides was very small. They left it overnight and measured the difference to be 13mm this morning. The garage is saying since this is within the LR specified tolerance of 18mm, there is nothing untoward. I could get it recalibrated but since it is "only cosmetic", the LR extended warranty folks have said they won't cover it. The garage suggested not spending their own quoted £400+ recalibration charge as it is "minor and only cosmetic without having any negative effect on the car".

It's a 2009 2.7 TDV6 in case the tolerance is different between models.

Should I be concerned or just take their word for it?

I had a simmilar issue when I got the car, noticed one corner was ever so slightly lower than the rest, to the point where nobody else could notice it but it was one of those things that being the owner YOU notice it.

I took it to an independant specialist who advised it was nothing to worry about, he reset the suspension ecu and made sure it was all sitting correctly, only cost an hour labour as well so not expensive either. Current: 06 RR Sport HSE TDV6, Bonatti grey, black leather. Defender 90 pick up. Vito 110cdi

Previous: Mercedes CLS, BMW 330cd M sport, Nissan 200sx, Impreza STi, EP3 Civic Type R

Yeah I only noticed it because I keep looking for things. Paying the price (i.e. diagnostic charge) of being too pedantic now

Buy your own tool and calibrate it yourself.

http://www.gap-diagnostic.com/home.html In Spain - 2018 F Pace - Frightened away from the Sports due to crank failures
Gone - A couple of RRS, A couple of Disco's. However thinking of another Sport.

Thanks SRE. Looks good but the trouble is if I get it I would want to raise the normal ride height to increase the comfort as much as possible and I don't know what the consequences of that could be

Not bothered if 13mm difference is fine. Just hoping one of the subject matter experts can confirm what the dealer has told me.

Maybe go for the full IIDTool, verty handy bit of kit and can read and clear all your faults

A bit more info
http://www.disco3.co.uk/wiki/IIDTool_Calibration_Values In Spain - 2018 F Pace - Frightened away from the Sports due to crank failures
Gone - A couple of RRS, A couple of Disco's. However thinking of another Sport.

Thanks again SRE. The IIDTool looks like a great piece of equipment. However, since it is locked to a certain VIN and I have a feeling I might want to change the car early-mid next year, it seems like something I should buy at that time.

The garage has returned the car and they were happy to state on paper the readings and everything they said on the phone so I am satisfied that all is good. Just feels like it came back from the most expensive car wash ever

Sitting down on the o/s/r corner seems to be a common "feature". Mine does it too. It comes back up to something similar to the n/s/r once it's being driven. One thing I've noticed is that it doesn't do the drop on that corner if it's parked in off road mode. That suggests that there might be a bit of wear in the sensor on that corner, although why that corner should wear more than others is beyond me.

I keep meaning to calibrate the suspension using my IIDTool but need to find a decently level surface in order to do it. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Yes, seems to level up fine a few moments after starting even if not being driven although I am not 100% sure. Definitely drives level according to the Mrs. when following me.

FWIW this is my understanding.

The suspension ECU in normal tolerance mode (as opposed to tight tolerance mode which is only used when carrying out wheel alignment) allows any corner to be plus or minus 10mm before it relevels the car, so in theory you could have up to 20mm difference between corners and still be within limits.

If you can leave a door open for a few hours, say overnight, this will stop the system relevelling. If a corner drops there must be a leak somewhere. It could be a suspension airbag or a leaking corner valve. When the engine is restarted the system will then relevel to within the standard tolerance range.

I think it's more likely to be a bit of crud in the valve block controlling the rear end rather than a leaking airbag.

A while ago someone had a similar problem with the front end and carried out a clean of the valve block - it solved the problem. He did a photo write-up too. Be worth a search for it. About a year ago I think. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

RRSTDV8 this one?

The behaviour sounds a bit more extreme than mine. It's only a small, hardly noticeable drop on one side. The garage has checked for leaks and hasn't found any. If I had the IID Tool I would try calibrating first rather than carrying out what seems an invasive process for someone like me

Good pointer for the more hands-on members though

Yes, that's the thread I mentioned.  2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

I asked Pete@LandRover whether 13mm was within tolerance and he confirmed the tolerance limit was only 10mm. However, the extended warranty explicitly excludes any adjustments even if they are outside tolerance (checked with Car Care Plan on the phone too).

Many thanks to Pete, LRCS have agreed to cover the cost of suspension recalibration and the car is booked in for mid next month

Very happy with the way Pete/LRCS have taken care of this.