Member Since: 03 Mar 2019
Location: Tasmania
Posts: 148
Tight Tolerance mode for wheel alignment - does it stay in t
Anyone able to confirm/advise if once set to Tight Tolerance mode via the GAP Diagnostic IID Tool the vehicle remains in this mode until its turned off/set to normal mode? Does this include if the vehicle and engine are turned on and off a few times etc?
I'm asking as there aren't wheel aligners locally with the ability to activate this mode, so I intend to when I drop the vehicle off but it will then be left off for a while before they start it and move into a hoist to do the wheel rotation, then back off and off for a while before onto the wheel alignment hoist - I'm wanting to ensure that by the time the wheel alignment commences it's still in this mode.Mine - modified MY03 LT L318 Discovery 2a HSE Td5 15P
Hers - MY12 L319 Discovery 4 Lion 2.7L TDV6
Dads - MY98 LJ Discovery ES 3.9L V8
24th Nov 2020 12:17 am
disco4ever
Member Since: 23 Dec 2013
Location: under the car
Posts: 402
To my Knowledge – I just did it for the 4 Wheel alignment – you need to enable „normal Mode“ leaving tight tolerance.
At least I found the car set to tight tolerance after the alignment.Achim
own garage certified LR tech
Disco 2 TD5 MY 2001 - gone but still driven by another owner
Defender 110 TD5 driving me bananas with all faults
Disco 3 TDV 6 HSE MY 2005 gone @280.000 km
Disco 4 SDV 6 HSE MY 2012
24th Nov 2020 6:51 am
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
Thats what i had to do and it was still in the TTM when i returned
Dont forget to calibrate your steering angle sensor as well after the alignment
Is the steering angle calibration required in all cases? When mine was last aligned, they locked the steering wheel in the dead-ahead position then aligned the wheels to that..
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
24th Nov 2020 10:06 am
twr7cx
Member Since: 03 Mar 2019
Location: Tasmania
Posts: 148
aja4x4 wrote:
Dont forget to calibrate your steering angle sensor as well after the alignment
Nothing is simple on these cars! How do I do that?Mine - modified MY03 LT L318 Discovery 2a HSE Td5 15P
Hers - MY12 L319 Discovery 4 Lion 2.7L TDV6
Dads - MY98 LJ Discovery ES 3.9L V8
24th Nov 2020 10:44 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4651
It's in your GAP IID menu and takes 2 mins to do. It should be done after any adjustments to the geometry, particularly the tracking as the position of the front wheels will have changed relative to the steering wheel.
TTM must be returned to "normal" otherwise it will stay in TTM yµ (idµ - eAµ) ψ=mψ
24th Nov 2020 2:01 pm
jjvd21
Member Since: 16 Jul 2007
Location: Chicago
Posts: 1070
How does the dealer enable tight tolerance mode?16 D4 Landmark
05 D3 HSE V8
THE original D4 spotter
24th Nov 2020 3:10 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
twr7cx wrote:
aja4x4 wrote:
Dont forget to calibrate your steering angle sensor as well after the alignment
Nothing is simple on thejse cars! How do I do that?
Its very easy
you need to drive the vehicle and mark the position of the steering wheel when driving straight.
I put a strip of insulating tape on top of the dash and then when driving i place one on the wheel so that it lines up.
Stop the vehicle and align the two marks, using your Gap select calibration then steering and after a couple of seconds it will say operation complete and your all done.
24th Nov 2020 6:32 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
They use there diagnostics
24th Nov 2020 6:33 pm
twr7cx
Member Since: 03 Mar 2019
Location: Tasmania
Posts: 148
Member Since: 10 Oct 2015
Location: Hampshire
Posts: 924
aja4x4 wrote:
twr7cx wrote:
aja4x4 wrote:
Dont forget to calibrate your steering angle sensor as well after the alignment
Nothing is simple on thejse cars! How do I do that?
Its very easy
you need to drive the vehicle and mark the position of the steering wheel when driving straight.
I put a strip of insulating tape on top of the dash and then when driving i place one on the wheel so that it lines up.
Stop the vehicle and align the two marks, using your Gap select calibration then steering and after a couple of seconds it will say operation complete and your all done.
Does that then level the steering wheel horizontal then if it was slightly off horizontal after an alignment.?Visitor from fullfatrr.com
RR Vogue SE 2011 4.4 TDV8
1974 Lightweight
8th Apr 2021 9:02 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
No if its not horisontal after alignment its not been done right.
Tight tollerance mode just makes sure the suspension heights on all four corners are as close to perfect as they can get,
Assuming that its calibrated correctly.
Normally the suspension has too move a set distance and stay there for a while before the ecu changes the height. TT mode reduces the distance the suspension has to move before it changes.Andrew
D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE
8th Apr 2021 10:58 pm
DrRobH
Member Since: 10 Oct 2015
Location: Hampshire
Posts: 924
Thought so. Was confused Visitor from fullfatrr.com
RR Vogue SE 2011 4.4 TDV8
1974 Lightweight
Dont get to hung up on TT mode, its all well and good when the car is new and nothing is worn on the steering and suspension bushes. Once a car is a few years old and things are starting to wear it makes little difference if its used or not.
Flack
9th Apr 2021 10:22 am
Gazzdid
Member Since: 14 Nov 2017
Location: Cannock
Posts: 158
Some say TT mode is imperative, some say no point.
Its a bit of a lol
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... All LED interiors lights, DRLs, Spare Wheel protector.
lol
