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

Communication Problem Service Required (id:1900)

Discussion in 'Roadster: Technical' started by gregd, Jul 19, 2018.

  1. gregd

    gregd Active Member

    Joined:
    Dec 31, 2014
    Messages:
    1,918
    Location:
    CM98
    Uh oh...

    I got in my car (a 2.0) this evening to try turning on the GSM (ref another thread), just to see if I could tell if it actually connected. Enabled it (6 hrs), then went into the service menu to see if there was any sort of status screen that might indicate a signal strength or connection state. I think I tapped on VDS and was about to hit the Back button when an alert popped up, Communication Problem. Dismissing that returned me to the main screen (not the service screen), but with no information:

    IMG_20180719_182745.jpg IMG_20180719_182726.jpg

    I closed the passenger door (where I was doing this from), and notice that both doors are now locked. Fortunately, both windows are rolled down. (I don't dare try opening the door from the inside, for fear of setting off the alarm.) The OVMS is connected, and it claims that the passenger door is still open, so apparently whatever happened killed the CAN bus driving the VDS (which is where, I think, OVMS gets its data from. The coolant pump is running, and the passenger light is on. Disconnecting the charging connector turns the light from blue to white, but closing the door does not turn it off. Reconnecting the charge cord and sliding the switch turns the light blue, but no charging is initiated. The battery is at 28C, full standard charge, so the pump wouldn't be going due to temps. Car was last driven this morning, no apparent issues.

    I tried the open/close/open/close... thing on the charge port door to reset the car, but no change observed. (How fast / long does one need to do this?)

    Leaning into the car, I apparently can still get to the service menu. Is there something (safe) that I can do there to reset things, or am I on the wrong side of the fault?

    Help?
     
  2. petergrub

    petergrub Member

    Joined:
    Jul 6, 2016
    Messages:
    72
    Location:
    Phoenix, Arizona
    Error 1900 is a VMS-VDS communication issue which is why the second picture of the VDS doesn't show any vehicle information. You should try a hard reboot of the VMS. Unplug the blue and black connectors, wait 30 seconds to a minute, then reinsert both connectors (the order for removal and reinsertion doesn't matter).
     
    • Informative x 1
  3. gregd

    gregd Active Member

    Joined:
    Dec 31, 2014
    Messages:
    1,918
    Location:
    CM98
    Yes, that did it. I remembered last night while trying to get to sleep (hard to do with a sick child :)) that there was a thread a while ago about a lock-up, and how to reboot it. Found it this morning (while you were typing your reply, I expect): How and where to pull plug / power to the VMS?

    Anyway, I got a single "chirp" from the horn, and the VDS blinked once and all seems normal again.

    OVMS, by the way, shows a trio of alerts: 1096, 3003 (neither of which are listed on the wiki), and an alert that the car is being transported while parked (possible theft/flatbed). Then it started charging.

    Will grab the logs when that's done.

    All happy. Thanks!
     
  4. gregd

    gregd Active Member

    Joined:
    Dec 31, 2014
    Messages:
    1,918
    Location:
    CM98
    #4 gregd, Jul 20, 2018
    Last edited: Jul 20, 2018
    Hmmm, one more bit of follow-up... As I said, it started charging after the reboot, which was fine. The charge current I had set (24 amps) had been reset to 40; not surprised. But it kept charging. A Standard charge has been about 164. I stopped it at 170.

    Do I need to drive the car a bit for it to re-learn the charging parameters?

    Edit: Got the logs; it went to 86% SOC, vs 83% normally. But the VDS now is displaying 164... I think I'll let it sit for a few days, unplugged, to let the vampires take the charge down a bit, before letting it charge again. I don't want it to overcharge.

    Side note... The downloading of the logs is a lot faster now for some reason. Odd.
     
  5. petergrub

    petergrub Member

    Joined:
    Jul 6, 2016
    Messages:
    72
    Location:
    Phoenix, Arizona
    Error ID 1096 is DMC FW: Lost VMS comms warning
    Error ID 3003 is SHFT: Warning Lost Comms VMS
    Both are residual from earlier when the VMS wasn't communicating with anything. Also, I'm still working on adding the rest of the error IDs to the Wiki list.
     
    • Like x 1
  6. gregd

    gregd Active Member

    Joined:
    Dec 31, 2014
    Messages:
    1,918
    Location:
    CM98
    Thanks for doing that. Much appreciated!

    Interestingly, none of the three alerts were recorded in the car's logs, at least as viewed by VMSparser. {shrug}
     

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


    SUPPORT TMC