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Roadster data/GPS module, need help

Discussion in 'Roadster' started by ElectricLove, Oct 6, 2014.

  1. ElectricLove

    ElectricLove Member

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    I've determined that my car is missing the module which gives the VDS its GPS and data-stream (w/ Tesla). I have an antenna but the module itself is missing. Wondering if anyone knows anything about these modules, any idea if ots a garmin unit or some other oem manufacturer and if so what the part number may be? If you can see yours and find the part numbers off the sides it would be super helpful! The module is mounted next to the wiper fluid reservoir up front (you would need to remove the black plastic shroud, which has 7 bolts or clips holding it down, to visualize it)

    It seems like this module is necessary to get gps tracking for ovms and an accurate clock in the vds. I want to have those 2 features!

    Thanks in advance!
     
  2. MLAUTO

    MLAUTO Member

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    Not sure what "module" you mean. The front VDS antenna is bolted on the bottom middle of the crash structure. The nav GPS antenna is on top by the left headlight. I would assume you are referring to the front vds antenna with the 4 pin black connector.
     
  3. shrink

    shrink Member

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    I think it's a Garmin. Tesla replaced it on the CPO Roadster I bought last year under warranty. The VDS was not giving me any direction or elevation information and no location info was coming through OVMS, but the GPS in the stock JVC was still working.

    They just ordered a new unit and installed it. I have no idea what the part number is, but just be aware they replaced it in mine less than a year ago. I'm sure someone at the local service center can tell you what it is.
     
  4. ElectricLove

    ElectricLove Member

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    Its not the antenna but the actual GPS receiver which is mounted up front, the antenna that is also mounted up front under the headlight connects to this receiver and this receiver connects to the VMS in the car to give the VMS date/time and location information; its needed for geo-tagged charging profiles and for the OVMS to work for tracking the car.
     
  5. MLAUTO

    MLAUTO Member

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    The antenna by the headlight is connected to the radio nav unit not the VDS. Here is a pic of the vds antenna with the black connector. I previously gave you a list of the connectors and what they connect to. I assume that you have an extra one. If it is not the black 4 pin one, what does it look like? tesla ant 007.JPG tesla ant 009.JPG
     
  6. Panicopticon

    Panicopticon Member

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    I have two GPS antennas by my front driver's side headlight (SAM_0611.JPG - Google Drive, SAM_0612.JPG - Google Drive). I'm reasonably sure the small one is connected to the SatNav. While the Garmin is plugged into the CANBUS, and is presumably where the VMS/VDS gets the positioning information from. I'll probably have my front end apart again this weekend, if I remember I'll see if I can't get you a part number...
     
  7. ElectricLove

    ElectricLove Member

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    Thanks for the information guys! Yeah, that Garmin unit is the one I need, I'm pretty sure by looking at it and comparing to the available oem garmin gps receivers that it is the Garmin 18x, seen here Garmin 18x LVC GPS Navigator Unit:Amazon:GPS & Navigation

    I'm going to order it and give it a shot, if it works we will all have a cheap alternative to buying the this part from Tesla (its $400) and we will know it'll be available as well!

    - - - Updated - - -

    I wonder if that one is the Tesla data connection unit? The Tesla service guys confirmed with me the VDS GPS receiver is the Garmin unit (they don't know model #, but know its Garmin).
     
  8. MLAUTO

    MLAUTO Member

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    Here is a pic of the Garmin unit. garmin ant 004.JPG
     
  9. ElectricLove

    ElectricLove Member

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    Awesome! That's the exact unit I thought it was the GPS18x LVC (which means it was sold as OEM without any harness on the wiring), 5m (which means it came with a 5m cable I believe) This is exactly what i ordered!

    Thanks man, you are awesome!
     
  10. MLAUTO

    MLAUTO Member

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    If Tesla got it without any connector you might need a pic of the wires to install a new one. The bottom right is empty. Top right are two thin black ones and the top left is a slightly thicker black one. garmin 2 002.JPG
     
  11. ElectricLove

    ElectricLove Member

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    Sweet man, you are awesome! Does anyone know what that connector is called? Molex 6-pin? I don't know my connectors very well, I may have to just buy 2 6-pin connectors and swap both sides otherwise, which isn't bad...
     
  12. Panicopticon

    Panicopticon Member

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    Its a Molex, probably a mini or micro. If someone can get me the dimensions I can probably figure it out.
     
  13. MLAUTO

    MLAUTO Member

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    .385 in X .555 in (+/-)
     
  14. Panicopticon

    Panicopticon Member

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    I've routed around the usual places (Mouser, Digi) and the Molex site. Either it something that's been EOL'ed or possibly custom (unlikely, I think). The problem is the center facing sloped pin -- can't find anything that matches. Its almost certainly a Molex part though. Sorry I couldn't be of more help. Its possible I missed it, the parametric searches for Molex stuff is abysmal.
     
  15. ElectricLove

    ElectricLove Member

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    #15 ElectricLove, Oct 9, 2014
    Last edited: Oct 9, 2014
    So I bought a set of 6-pin Molex connectors at Fry's (male/female) and it looks like the dimensions are basically the same, the pins are the same diameter as well, the only missing functional component is the little part that juts out for the clip to hold on to, I'm thinking I can just make it work and leave the proper Tesla connector on the vehicle, which is good for future owners who may want to just buy the module from Tesla if it ever becomes necessary again.

    BTW, the side of the connector on the Tesla says Tyco, so maybe Tyco sells their own automotive grade connectors, I notice there is a small gasket on it to keep it sealed.

    Thanks for all the help guys, the Garmin arrives tomorrow so I can connect the Molex, plug it in and test it out! Will report back!

    Do we have a database somewhere to log availability of parts (besides from Tesla) and Off-the-shelf component options? May be a good idea to start one, if there isn't one already I'll start a Google-Drives spreadsheet we can all spread around! (Edit, I made one: Tesla Roadster parts list - Google Sheets)
     
  16. hcsharp

    hcsharp Active Member

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    Great idea! Thank you. I wonder if this spreadsheet and discussion of parts that go in it should be a separate thread?
     
  17. Panicopticon

    Panicopticon Member

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    Huh, I really thought that shape and design was patented/trademarked by the Molex folks. If I get bored later maybe I'll dig around the Tyco site and see if I can't find a match.
     
  18. ElectricLove

    ElectricLove Member

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    It works! Everything is perfect, compass, altimeter, clock and OVMS tracking! Only nuance is connect the yellow wore to where the thick black wire is on the images below. I heat shrunk it and the connector holds tightly even without the proper clip point.

    Thanks guys!
     
  19. Panicopticon

    Panicopticon Member

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    I know this was months ago, but while I was routing around the Service Manuals site I looked up this connector. On the 2010 LHD, it should be an Amp 794895-1, (794895-1 .163" Centerline, 600 V, 9.5 A max. - TE).

    Comparing the photos earlier in the thread to their site, I'm pretty confident its right.

    This is odd, in that ElectricLove found a Tyco stamp on his.

    Not that I think this information will ever be of any use to anyone, ever... =o)
     
  20. izzyclan

    izzyclan New Member

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    I am replacing my GPS module next weekend and would like to know if anyone has a picture of which GPS wires connect to the Tesla connector. The above post says to connect the yellow wire to where the thick black wire is on the images blelow but there is no image. Thanks.
     

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