TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC
Start a Discussionhttps://teslamotorsclub.com/tmc/tags/

Lane Departure Warning - Doesn't do anything

Discussion in 'Model X: Driving Dynamics' started by AustinWhiteMX, Apr 2, 2017.

  1. AustinWhiteMX

    AustinWhiteMX New Member

    Joined:
    Mar 5, 2017
    Messages:
    4
    Location:
    Austin
    I got the 8.1, and tried out the LDW by intentionally crossing over the lane markings (safely of course, with no one around!), but it didn't really do anything. I confirmed that LDW was enabled, and I confirmed that the lanes are showing up in my dash display. I tried both left and right lane encroachments, but there was no steering wheel vibration at all. What am I missing?
     
  2. araxara

    araxara S-P85#3,218 X-90D#3,299

    Joined:
    May 11, 2012
    Messages:
    765
    Location:
    Tucson, AZ
    You have to drive over 35mph for it to take effect.
     
  3. mikevbf

    mikevbf Active Member

    Joined:
    Feb 11, 2012
    Messages:
    1,031
    Location:
    vermont
    Also lane departure warning systems often do not activate if the system thinks you might possibly be doing an emergency maneuver. They are more designed for drifting that occurs with a tired or distracted driver. After activating, try slowly drifting over 35mph without the turn signal on.
     
  4. AustinWhiteMX

    AustinWhiteMX New Member

    Joined:
    Mar 5, 2017
    Messages:
    4
    Location:
    Austin
    Yes, it certainly was. I tried various speeds above 35 up to 70.
     
  5. AustinWhiteMX

    AustinWhiteMX New Member

    Joined:
    Mar 5, 2017
    Messages:
    4
    Location:
    Austin
    Makes sense. I did just that. Gradual drifting. Basically I gently switched lanes without the blinker on (making sure there is no one behind me to be annoyed by this)
     
  6. animorph

    animorph Member

    Joined:
    Apr 1, 2016
    Messages:
    514
    Location:
    Scottsdale, AZ
    I could feel the LDW vibration, doing the same test, but it is not in your face noticeable. Especially if your lanes have raised dots adding to it.
     
  7. pilotSteve

    pilotSteve Member

    Joined:
    Jul 14, 2012
    Messages:
    953
    Location:
    Vancouver WA
    I found the vibration to be quite subtle, enough so that I questioned if the LDW was even working the first few times I tforced it to happen.
     
  8. rainforest

    rainforest Member

    Joined:
    Aug 21, 2016
    Messages:
    531
    Location:
    Vancouver
    When I do it, it feels almost like my car is vibrating over the raised paint of the lane line. Is this what it feels like to you guys? I can't even tell if the vibration is due to the road or the steering wheel.
     
    • Like x 1
  9. Paul Carter

    Paul Carter Active Member

    Joined:
    Apr 27, 2013
    Messages:
    1,657
    Location:
    Vancouver, BC
    Like hitting a rumble strip, but not as hard as a real one. I find it noticeable enough. But I'm almost ready to turn it off. Not sure if my driving is bad or getting a lot of false positives. :confused:
     
    • Like x 1
  10. vandacca

    vandacca ReActive Member

    Joined:
    Oct 13, 2014
    Messages:
    3,201
    Location:
    Hamilton
    It feels exactly like driving over rumble strips to me. I too had to turn it off because it kept going off all the time. It made me realize that I drive a lot more on the edge of the lane than I expected. Usually when I try to "straighten" a curve or pass a large vehicle.
     
    • Informative x 1
  11. rainforest

    rainforest Member

    Joined:
    Aug 21, 2016
    Messages:
    531
    Location:
    Vancouver
    Hmmm... in Vancouver city centre, we don't have many rumble strips. Let me go find some.
     
  12. Paul Carter

    Paul Carter Active Member

    Joined:
    Apr 27, 2013
    Messages:
    1,657
    Location:
    Vancouver, BC
    Highway 99 has them and perhaps the best drive ever! :)
     
  13. DriverOne

    DriverOne Supporting Member

    Joined:
    Aug 20, 2012
    Messages:
    578
    Location:
    Austin, TX
    I turned it off today. Regretfully. On occasion it would help, but too many times I'm crossing the line on purpose.

    Can passengers feel it? I can't tell what's vibrating.
     
  14. rainforest

    rainforest Member

    Joined:
    Aug 21, 2016
    Messages:
    531
    Location:
    Vancouver
    I won't go there..... lol
     
    • Like x 1
  15. COrich

    COrich Member

    Joined:
    Jan 5, 2017
    Messages:
    34
    Location:
    Colorado
    The vibration is only in the steering wheel. It is subtle, but I can feel it.
     
  16. FlyF4

    FlyF4 Member

    Joined:
    Mar 21, 2017
    Messages:
    384
    Location:
    Sparks NV (Giga-Town)
    I see the OP is a fairly new poster, so makes me wonder if the car is also new. Even if driving over 35 mph AND slowly drifting into the lane AND having the feature turned on, the car also needs to be driven enough for the sensors to calibrate and activate auto steer even though you don't have auto steer activated at the time. Thus, do you see the faint lane lines in the center display? If not, that indicates the car isn't yet seeing the lines.
     
  17. RedCar

    RedCar New Member

    Joined:
    Oct 25, 2017
    Messages:
    1
    Location:
    California
    My Model X with 22" wheels has this problem. There is close to no sensation for lane departure warning. I took it to the dealer and a service mechanic confirmed it is working, but it is so subtle as to be completely useless.
    I don't know if this is peculiar to 22" wheels?
    Evidently there had been complaints earlier that the vibration was too strong. Now, they might as well drop the feature: it is false advertising to describe this as "lane departure warning".
    Maybe if enough people complain, they can fix this?
     
  18. kvelarde23

    kvelarde23 Member

    Joined:
    Aug 20, 2017
    Messages:
    14
    Location:
    Inland Empire
    Just picked up our MX last month and I thought this whole time that LDW was an audible or some on-dash screen alert, not a steering wheel vibration type of notification. Good to know.
     

Share This Page