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My P85 is Haunted! Any thoughts?

Discussion in 'Model S' started by jacobp, Jun 8, 2014.

  1. jacobp

    jacobp Member

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    A month or so ago, i took my P85 to the Rockville MD SC to have the underbody shield installed, tires rotated, etc. As part of the visit i had the technician look at the dash pad as it appeared that there was a blemish in the material. Upon inspection, the service technician decided to replace the dash pad in its entirety. And that’s when the strangeness began.


    After a couple of days, i wiped down the dash pad with a microfiber cloth and observed some bizarre behavior that i was able to confirm this evening.


    Here’s what I’ve observed. When i wipe the top of the dash pad with a cloth, applying slightly more than very minimal force, the car goes bonkers. The center screen invokes every control, turning them on and off at random. To be clear, all I’m doing is rubbing the top of the dash pad. I am not touching the center screen at all. The seat heaters come on and off, the front and rear defrosters come on and off, the temperature settings change by themselves, the bluetooth screen appears and disappears, the version home screen comes on and goes away, etc.


    The only thing i can think of, is that the dash pad must have been improperly installed. But i am more than a little concerned about driving the car when such random events could occur. Has anyone experienced anything like this?
     
  2. Dien Kim Nguyen

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    I had a similar issue, my wife sometimes would grab the blanket from the back seat when she gets cold (which is quite often) the defroster would immediately turn on, the car AC is turn on full blast, and both seat settings would turn on to #3. From what I was able to observe, the static electricity, caused by the motion of displacing the blanket near or touch the bezel of the screen, created these behaviors. It took me a while to understand what what going on. This is an electromagnetic interference (EMI) that Tesla didn't take in an account when designing the screen. Basically they don't have proper shielding and grounding near that area.
     
  3. EarlyAdopter

    EarlyAdopter Active Member

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    Static discharge from the microfiber is triggering the capacitive touch sensors on the screen.

    There's a fix your service center can do to better ground the dash top to the chasis and divert that static electricity away from the center touch screen.

    Or try using a cotton cloth.
     
  4. David99

    David99 Active Member

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    Turn on 'screen cleaning mode'.
     
  5. jacobp

    jacobp Member

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    Thanks to all. "Ownership" responded immediately to my email where i described the issue. They suggested that it was static electricity and that i should use the cloth supplied by Tesla when i purchased the car. I took their suggestion and tried the "Tesla cloth" and observed the same results. I also used a cotton cloth on the dash and got the same bizarre results.

    My concern is that i am having real problems with the nav system in that sometimes it works and sometimes it does not. When it does not work, i can enter an address, press "GO" and nothing happens. I'm wondering if that issue could be related to the weird center screen/grounding issue that i am experiencing.

    - - - Updated - - -

    You have described precisely what i am seeing.
     
  6. Chris

    Chris Member

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    Experienced the exact same behavior a few times. Thought I was just imagining this but guess not
     
  7. jacobp

    jacobp Member

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    That was my reaction the first time i experienced this. I then reconfirmed it using a cotton cloth and the screen cleaning cloth provided by Tesla. I'm guessing that the SC did not properly ground the screen when they replaced by dash pad during a prior SC visit.
     
  8. Chris

    Chris Member

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    You may be onto something. My screen was also replaced
     
  9. Todd Burch

    Todd Burch Electron Pilot

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    This is a known issue for us old(er)-timers (relative to the life of the Model S). Yes, Tesla has a fix to better ground the dash (although I've never needed it). Use screen cleaning mode (available in the Displays tab), and apply a little bit of gentle non-harsh cleaner or water to the cloth first. The moisture will prevent significant static buildup.

    And regarding your nav issue, do you have the .109 flavor of 5.9 yet? (Or the latest 5.11 version)? I think this is a bug that was fixed in the latest firmware update that's slowly being pushed to owners.

    In short, you're not crazy, your car is not haunted, and the very thing that rockets your car from a stoplight is to blame!
     
  10. jacobp

    jacobp Member

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    Thanks for the insight. I just got .109 last night (not 5.11) so we'll see if the nav performance improves. Thanks again.
     
  11. Newscutter

    Newscutter Member

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    I had EXACTLY this happen Friday night.

    FREAKED ME OUT. Car was 7 days old and all I did was dry-microfiber a light coating of dust off the dash.
    Screen went nuts and nothing I did brought it back in line-- even long after the cloth was thrown in the nearest volcano and an attempted exorcism.

    Finally hunkered down, swallowed hard, then did a reboot of the main screen. And.... it didn't come back. Having never done it before I didn't know how long to wait for it. Starting to panic I got out of the car to look up something and it shut off in the mean time. Came back into the garage and it powered up normally, both screens, and has been fine since.

    Still a little unnerved by it. Will eventually have to fess up to wife that dust is now a new accessory.
     
  12. Btrflyl8e

    Btrflyl8e Active Member

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    I've had this happen no matter what type of cloth I used, but thanks to snapping, crackling, and popping that accompanied the bizarre screen behavior I knew it was static immediately. I've thought that slightly dampening a cloth with plain water would do the trick, but was afraid to try so I've just been living with a dusty dash. Guess I'll brave it tomorrow!
     

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