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Thread: D4 air suspension question.

  1. #1
    Disomania Guest

    D4 air suspension question.

    The FAQ has several modes listed for air suspension, including a 'high speed' mode.

    Now, several years ago, when it was only on RR, they used to list it in the owners handbook and say it would work at 80kph+ automatically.

    The book for the D4 only mentions 4 modes, access, normal, off road and auto extended off road. I know the dealer mode is there too from what the forum and dealer have said.

    So, my question is simply this:

    Do all the modes in the FAQ exist for ALL D3/4/RRS or are they specific to the RRS? A search on the interwebthingy is not that helpful, just point to the FAQ!

  2. #2
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    My RRS has Access, Onroad, Offroad, Extended, Super extended, and Motorway Cruise which is half way between Access and Onroad (need to be over 160 kph for a few seconds for it to activate - deactivates at 130kph)

    Garry
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  3. #3
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    Quote Originally Posted by Disomania View Post
    Do all the modes in the FAQ exist for ALL D3/4/RRS or are they specific to the RRS? A search on the interwebthingy is not that helpful, just point to the FAQ!
    The D4 does not have highway mode.

  4. #4
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    The D3/RRS/D4 indeed have the same speed modes including high speed mode. Prior to Terrain Response the Range Rovers had highway mode which lowered at a much lower speed, with early L322s lowering at 100 kph. High speed mode at lower speeds (not available as standard) certainly improves handling - I can't vouch for 160 kph though. Lowering by 50 mm is even better as long as there are no bumps.
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  5. #5
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    Graeme, I'm sure my D3 didn't have the highway squat mode. Not sure about the D4 but I didn't think it did.

  6. #6
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    I know a guy, who knows a guy, who knew a guy who has a car very similar to my 3.0L D4......

    I believe that car may have exceeded 160 on a couple of occasion....

    But I'm led to believe that there were no indications, sensations or noises (warning bells) that would lend one to think that the car had lowered or selected a different mode.


    I know the handbook says that it will....but......


  7. #7
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    Someone must have stolen my D3 at some stage & on a long straight with relatively new tarmac, driven it several KPH over 160. It took some time (several seconds but not 30) for the car to slightly lower. I have heard rumors that there were no bells or lights when this happened.
    I am also told that once the speed dropped down below 130 120 there was no discernible lift in the suspension.
    I believe the thief stopped shortly after this & the height looked as per normal on road.
    Once this dirty rotten scoundrel did the same exercise again going the other direction (only a bit quicker) he could say the car does seem to drop slightly but again some time after reaching 160. The mongrel also reports that the car is very stable & fairly quiet at this alleged speed.
    Once the rotter had been captured & his sunglasses removed I decided to let him of with a warning from my wife.
    That wiped the grin off his face!
    Thankfully my D3 has not exceeded 110kph since this unfortunate event took place several months ago.
    Jonesfam

  8. #8
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    My L322 lowers to highway height at 80 and the light on the display comes on to let you know and then it returns to normal once you go below 80.I have driven it numerous times at 160 and the steering gets heavier and the suspension gets harder. Pat

  9. #9
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    Quote Originally Posted by PAT303 View Post
    My L322 lowers to highway height at 80 and the light on the display comes on to let you know and then it returns to normal once you go below 80.I have driven it numerous times at 160 and the steering gets heavier and the suspension gets harder. Pat
    how dose your suspenon get harder ???? it gets fermer cos of fast rebound settings in the shocks,

  10. #10
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    The lower mode was only on very early model D3s AFAICR.

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