Discovery 2017

↓ Advertise on DISCO5.CO.UK ↓

  • IndusD4
    Member Since: 28 Jan 2018
    Location: Sydney
    Posts: 698
    Australia 

    Manual Tight Tolerance Mode

    On the D5 you can set the car into tight tolerance mode manually should anyone need this.

    The procedure is as follows:

    Gearbox in Park
    Start the engine
    Set the suspension to Normal height
    Open the drivers door
    Press the brake pedal lightly 3 times letting the pedal come up fully each time
    And close the door within 10 seconds from first press of the brake pedal.

    There will be 2 chimes from the instrument cluster after the door is closed, if successful. Each time the door is opened and closed 2 chimes will sound indicating it is still in tight tolerance mode.

    To deactivate:

    Either turn the engine off, or drive it over 5mp/h (8km/h)

    If you were to use this procedure for wheel alignment you need to have the engine running the whole time.


    Ron
    2016 D4 TDV6
    IIDTool BT
    22nd Dec 2018 9:51 pm
  • Russell
    Member Since: 26 Jun 2016
    Location: Lydd
    Posts: 1102
    United Kingdom 
    2017 Discovery Td6 First Edition Namib Orange

    👍
    How did you find that
    Namib Orange 1st Edition with black roof and wheels.
    Privacy, tow bar, drive pack, surround camera, heated front & rear seats, auto dim door mirrors, side steps, remote Pro, RSE, arm rest fridge dash cam front and rear.
    22nd Dec 2018 10:13 pm
  • IndusD4
    Member Since: 28 Jan 2018
    Location: Sydney
    Posts: 698
    Australia 

    I could boast about trail and error. But no, from the workshop manual.
    2016 D4 TDV6
    IIDTool BT
    22nd Dec 2018 10:25 pm
  • gavinadams
    Member Since: 25 Nov 2018
    Location: Sydney
    Posts: 103
    Australia 
    2019 Discovery Sd4 (240) HSE Loire Blue

    With this mode on, what does it actually change on the vehicle?
    23rd Dec 2018 1:16 am
  • IndusD4
    Member Since: 28 Jan 2018
    Location: Sydney
    Posts: 698
    Australia 

    Hi Gavin,

    Normally the air suspension doesn't self level until it has to adjust by a certain number of mm (I thought 10 but happily be corrected). This doesn't suit doing wheel alignments so in tight tolerance mode it adjusts quicker (not sure but may be 2 or 3 mm when it adjusts).

    Regards
    Ron
    2016 D4 TDV6
    IIDTool BT
    23rd Dec 2018 5:00 am
  • IndusD4
    Member Since: 28 Jan 2018
    Location: Sydney
    Posts: 698
    Australia 

    Seems I wasn't far off. This is from the IIDTool manual:

    This will set the EAS ECU into tight or normal tolerance mode. In normal tolerance mode, the EAS ECU
    will adjust a corner when it’s +/- 10 mm or higher than the desired height. For example if the corner is
    at +9 mm, it will not correct the height. If the corner is at +11 mm, the EAS ECU will make adjustments.
    In tight tolerance mode, a tolerance of +/- 3 mm is used.


    Ron
    2016 D4 TDV6
    IIDTool BT
    23rd Dec 2018 5:07 am
  • gavinadams
    Member Since: 25 Nov 2018
    Location: Sydney
    Posts: 103
    Australia 
    2019 Discovery Sd4 (240) HSE Loire Blue

    Thanks a good thing to know about especially if I get a wheel alignment done somewhere other than jlr service
    23rd Dec 2018 6:49 am
  • Alski
    Member Since: 05 Apr 2018
    Location: UK
    Posts: 11
    Northern Ireland 
    2017 Discovery Sd4 (240) HSE Silicon Silver

    Great Tip - Thanks
    27th Dec 2018 12:42 pm
  • Forum Permissions
  • You cannot create new threads in this forum
    You cannot reply to threads in this forum
    You cannot edit your posts in this forum
    You cannot delete your posts in this forum
    You cannot vote in polls in this forum
All times are GMT DISCO5.CO.UK © 2016 - 2024 Futuranet Ltd DISCO5.CO.UK RSS Feed - All Forums 
DISCO5.CO.UK is independent and not affiliated to Jaguar Land Rover.
Switch to the mobile site
Close