Does the L405 suspension need to be in Tight Tolerance mode for a wheel alignment like my D3 had to? Have an IID so issues setting it if needs be.

Thanks

Ivan 2013 Vogue SE SDV8
2013 Freelander 2 SD4 HSE Luxury

Yes, no tools required though.

Copied from manual

VEHICLE DYNAMIC SUSPENSION
AIR SUSPENSION MANUAL
TIGHT TOLERANCE SETTING
MODE ( G 1 5 6 3 4 0 2 )
GENERAL PROCEDURES
NOTES:
A C T I VAT ION
If this procedure has been successful the instrument cluster will emit
two soft chimes 1 second after the drivers door is closed. The
instrument cluster will then emit two soft chimes each time the
drivers door is closed to confirm that air suspension manual tight
tolerance setting mode is still active.
Apply 3 light applications to the brake pedal during this procedure.
Make sure that the pedal is returned to the fully off position before
the next application.
1. Make sure the transmission is in the P position.
2. Run the engine.
3. Set the suspension to the normal height.
4. Open the drivers door.
Press the brake pedal 3 times (making sure that the pedal is fully
returned to the rest position before applying the next application).
5.
Close the drivers door within 10 seconds of the first brake pedal
application.

D E ACT I VAT I O N
7. Turn the engine off or drive the vehicle over 5 mph (8 Km/h). Current
2013 Range Rover Autobiography SDV8
2001 Porsche 911 Turbo
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2007 Range Rover Vogue SE TDV8
2002 Range Rover HSE TD6
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Thank you 2013 Vogue SE SDV8
2013 Freelander 2 SD4 HSE Luxury

hi sorry for my ignorance but why do you need to do this ?

Variation in ride height changes all suspension geometry angles including camber, castor, toe, kingpin etc.

The EAS will always try to keep the car at the normal ride height by adjusting the air pressure in each of the four air springs.

In normal mode, there is a certain tolerance range that is accepted by the system and this means that there are tolerable variations in heights between each of the four corners.

The tolerance range in normal mode exists to provide a comprise between system performance and premature wear on the EAS components, especially the solenoid valves.

Under TTM, the tolerance range is a lot narrower and the EAS works overtime to maintain each of the four corners at the normal ride height within this much narrower tolerance range.

In order to get the most accurate alignment possible, TTM must be set to ensure each of the four corners are as close to the same height as possible thereby distributing the total mass of the vehicle across both axles as equally as possible.

If TTM is not set before carrying out the alignment process, there is greater scope for error in achieving the factory suspension geometry angles.

I hope this helps. Kev

2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey