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Vital Stats in the Diagnostics Menu

Discussion in 'Roadster: Technical' started by Alan, Feb 26, 2014.

  1. Alan

    Alan Member

    Joined:
    Sep 18, 2010
    Messages:
    248
    Location:
    UK
    In the "hidden" diagnostics menu there is an option to display vital statistics. One thing it displays is Ttrans (transmission temperature). On my roadster it always says -40C (I am in the UK so degrees C not F). Just wondering if this is normal - it was cold this morning but not -40C!
     
  2. marco2228

    marco2228 Roadster Signature #34

    Joined:
    Nov 19, 2010
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    Location:
    Cologne/Bremen , Germany
    My 1.5 shows the same temperature.
     
  3. Mitrovic

    Mitrovic Member

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    Location:
    Bern, Switzerland
    How do you get to the "hidden" menu?
     
  4. hcsharp

    hcsharp Active Member

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    I think this is one of the remnants left by the original transmission that was replaced. The new 1-speed transmission easily stays cool enough so they probably didn't bother putting a thermistor in it and never updated the display just in case they might need it at some point. Removing the connection to a PTC thermistor will cause the measuring device to think it's at its coldest possible temp.
     
  5. Chillout

    Chillout Member

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    but where did you find this "hidden" menu?
     
  6. DrComputer

    DrComputer Member

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    private message any Roadster owner for the code.
     
  7. Mark77a

    Mark77a Member

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    Location:
    Poole, Dorset, UK
    Its probably on TMC somewhere .. but may need to dig deep,
    ( I guess we are all worried someone might hit the 'Tesla - self destruct button' by accident :) )

    Other forums, in EU, are less cautious, eg : speakev.com and tff-forum.de
     
  8. Chillout

    Chillout Member

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    Thanks! It seems to be pretty hard to find this code on the internet... I wonder what people are afraid of!
     
  9. Mark77a

    Mark77a Member

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    Location:
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    I guess - a combination of:

    Tesla wanting to keep tight grip on all their proprietary technical knowledge, because positively...
    ... In the wrong hands (ie not technical or just ..oooops !) it could cause 'big problems' for the car's systems and warranty status ?
    Tesla requesting moderators to remove - to avoid having to fix such 'big problems'. ?
    ... or negatively/cynically so that all and every issue needs a visit to the service centre/ranger ( and $$ ) ?

    What do others think ?
     
  10. Chillout

    Chillout Member

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    I guess they don't want people without any knowledge to be poking around potentially "dangerous" features...
    In the VAG-community, I've seen many people making terrible mistakes with their OBD2-cable and VCDS software. Some stuff is better left untouched (by noobs ;) ), like calibrations and such.
     
  11. dhrivnak

    dhrivnak Active Member

    Joined:
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    NE Tennessee
    The codes are not well documented. And one can easily shut down the car (turn off and isolate the ESS for example). So caution should be exercised.
     
  12. sethr

    sethr CPO Roadster #1089

    Joined:
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    Location:
    Fairfax, VA
    I have to respectfully disagree. I obtained the code from this forum (it seems it has been removed now, so I won't re-post it). I paid close attention of course, but it was perfectly clear which parts of the menu were just reporting information and which would reset something. I looked at my CAC, balancing, and the max/min temps and voltages, then pressed "back" until I was out of the menus. Just watch where you press. I used the eraser end of a pencil, which is smaller than the touch screen buttons, to be sure I didn't accidentally press anything I shouldn't.
     
  13. MLAUTO

    MLAUTO Member

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    SW Florida
    I originally got the code from a Tesla dealer when I inquired how to turn back on the APS. They had only one guy that worked on roadsters and I got the impression that was one too many. There is not much to screw up as I have pressed every button there is. In the VDS (vehicle diagnostic system?) section you can lock everything up for several minutes, it appears to do a diagnostic test and becomes locked until completion. Both my cars are salvage so I was not concerned I was going cause problems.
     

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