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  1. johnr

    Extension cable for long term use

    Sorry for the late response. To clarify, the Supercharger extension cord includes an additional built-in thermal sensor to protect the cord itself while Supercharging. The thermal monitoring of the Tesla Gen 2 adapters is completely independent of this. If you plug in your Mobile Connector...
  2. johnr

    What to do when no Nema 14-50 adapters available?

    When Tesla is out of stock, you can look elsewhere. There are people reselling them on ebay and amazon (most are price-scalpers though!). My company also makes a Tesla-compatible NEMA 14-50 adapter which works the same as the OEM ones. Actually we're the only non-OEM alternative, so when the OEM...
  3. johnr

    Is this plug safe? [Adapter replaced by vendor]

    The Gen 2 adapters have two wires for power and one for ground. There are also two signal wires which are connected to a microchip that's embedded in the plug. The microchip tells the Mobile Connector how many amps to pull and also performs thermal monitoring of the plug. If the plug gets too...
  4. johnr

    Is this plug safe? [Adapter replaced by vendor]

    Point well taken. Will definitely keep this in mind going forward.
  5. johnr

    Is this plug safe? [Adapter replaced by vendor]

    No worries, it's what we should do :)
  6. johnr

    Is this plug safe? [Adapter replaced by vendor]

    John here with EVSE Adapters. We did sell this adapter to Steve. The NEMA 15-30 is a fairly uncommon connection and this type of plug is sometimes hard to source. The majority of our adapters are fully molded and look much nicer. Unfortunately, the plugs we usually use for this adapter were...
  7. johnr

    Gen 3 Wall Charger - Can I get data from it?

    In the manual for the Gen 3 wall connector, Tesla says "Connecting Wall Connector to a local Wi-Fi network enables it to receive over-the-air firmware updates, remote diagnostics access, and usage data tracking capability." This statement is found on page 7 of the manual, available here...
  8. johnr

    LTE Retrofit $200

    A few days ago I made an appointment to get the 4G LTE upgrade and then I got an invoice for $350 ($108 for parts and the rest for labor). So I called the service center, told them it's supposed to be $200, and he agreed to adjust the price down to what it's supposed to be. However he also told...
  9. johnr

    MCU1: Black center screen / mcu failure caused by a faulty navigation MicroSD card

    On February 27 I mentioned in the eMMC thread that I was again experiencing issues with the MCU a few months after having the Tegra chip replaced by a third party shop: More recently, there have been numerous occasions where the signal indicator at the top-right of the UMC indicates no signal...
  10. johnr

    Supercharger - Visalia, CA (under construction May 2022, 20 V3 stalls)

    Wuksachi Lodge in Sequoia NP will let you plug in for L1 charging if needed. You can find it on Plugshare. However since they only have a couple of outdoor outlets to spare, I would only charge there if I was spending the night or really needed it. I'd imagine Wuksachi would probably be amenable...
  11. johnr

    Teslas in Movies & TV

    In the Chinese TV series "You Are So Sweet", a classic Model S driven by the lead actor got a lot of screen time. Its first appearance is right at the beginning, and the car makes appearances in many of the episodes. Nice to see Tesla vehicles getting favorable exposure worldwide. (with English...
  12. johnr

    Wiki Consolidated eMMC Thread (MCU repair) (Black Center Screen)

    Recently I got the black screen of death. The touchscreen just wouldn't come on, and the error message appeared on the dash stating that the screen is unavailable. I tried the reboot sequence to no avail. Several minutes later is started up and has been OK since, for now... Prior to that, it has...
  13. johnr

    Wiki Consolidated eMMC Thread (MCU repair) (Black Center Screen)

    Probably nobody will see this comment since the thread is so long, but I just wanted to mention that I've discovered a really neat side-effect of the Tegra upgrade. BTW, I had the upgrade performed last year by @EV-Fixme and it went well. I removed the display and shipped him the defective...
  14. johnr

    Troubleshooting: RWD car, pulls to the right when accelerating

    I have a 2013 Model S which is rear wheel drive only, that has begun exhibiting a worrying behavior in just the last few months: at higher speeds (above about 60mph) if I hit the throttle to speed up the car suddenly tries to veer to the right, and when I let off it wobbles to the left. Now I...
  15. johnr

    Third-party Tesla service centers in California

    If anyone knows of any third-party Tesla service centers in the state, let's list them here. As someone who owns an out-of-warranty Tesla that is somewhat high-maintenance, it would be really nice to have options. I'm sure a lot of us know about the Electrified Garage, but they're clear on the...
  16. johnr

    CCS Adapter for North America

    The point is that in Europe Tesla DOES support fast-charging their vehicles at CCS chargers. To make this possible, Tesla has incorporated the necessary software and hardware in their newer cars shipping to Europe. Some have speculated that it should be possible to fast charge at CCS stations...
  17. johnr

    CCS Adapter for North America

    Here's a rough schematic:
  18. johnr

    CCS Adapter for North America

    Yesterday I made up a prototype "dumb" CCS adapter and tested it with a 2020 Model 3 at a CCS charger. It didn't work, because the car failed to detect connection to the charger. So it sounds like probably the North American vehicles are lacking either the hardware or the software for CCS...
  19. johnr

    Needing a 2019-2020 Tesla to test a prototype CCS adapter

    Good point. In Europe, all the new Model 3's and Y's already come with a CCS port - so they can plug right in without needing an adapter. I think that's why Tesla didn't mention them. Of course the North American vehicles use their proprietary connector, but in Europe Tesla is switching over to...
  20. johnr

    Needing a 2019-2020 Tesla to test a prototype CCS adapter

    Hello, According to Tesla, “All Tesla Model S and Model X vehicles produced after May 1, 2019 have the technical capability to charge at CCS Combo 2 charging sites with the use of a CCS Combo 2 adapter.” It's important to note that this message is intended for customers in Europe, where CCS...
  21. johnr

    How I fixed my air suspension leak for $1.00

    A little update: The repair I made started to leak again, so I went back and did a little plastic welding to fix it this time (using a hot knife to carefully melt some of the plastic over the hole). That was just a few days ago and so far it's holding up fine, but time well tell whether this...
  22. johnr

    TPMS reset on V10

    With the latest software update, I too got the reset button back - and it's about **** time!! I bought new TPMS sensors and had them installed back in January. Since then, I went to two different Tesla service centers to try to get them to reset the receiver and instead they kept insisting that...
  23. johnr

    Can you charge other EV using your portable Tesla UMC?

    I wonder whether that may be one reason why Tesla has decided to forgo 3-phase capability in the Gen 2 UMC - to assure compatibility with the standard. It looks like Tesla may have considered making it 3 phase capable, as there are a couple of "empty" pins in the Gen 2 connector that look like...
  24. johnr

    Can you charge other EV using your portable Tesla UMC?

    I know about the Tesla to J1772 adapters. My question was directed to members in other countries (not North America) where the predominant charging system is the IEC 62196 Type 2 "mennekes" connector. In North America, Tesla uses their own proprietary connector while other EVs use J1772, but in...
  25. johnr

    Can you charge other EV using your portable Tesla UMC?

    I'm curious about this, but since I live in the US our Tesla cords are different here so I cannot try it out myself. I understand the Tesla mobile connector comes with a Type 2 connector just about everywhere except for North America, so it should be usable for charging other electric vehicles...
  26. johnr

    How I fixed my air suspension leak for $1.00

    Yes, that epoxy should work well for this. First roughen the area around the hole with sandpaper to ensure the epoxy can stick well. I just put the car into jack mode which should disable the compressor, and then unscrewed the hose from the compressor. It was quite easy to detach, and no need to...
  27. johnr

    How I fixed my air suspension leak for $1.00

    The air hose is also plastic. It looks like metal but it's actually a rigid plastic tube.
  28. johnr

    How I fixed my air suspension leak for $1.00

    A while back, I noticed that the air suspension compressor in my Model S was running quite often while driving. Then the air suspension warning light started coming on frequently. I started noticing a hissing sound from the front of the vehicle after parking. These symptoms were gradually...
  29. johnr

    So Cal Slipstream OEM 19" Model S Rims

    Have they already sold? I'll buy them unless someone already beat me to it.
  30. johnr

    So Cal Slipstream OEM 19" Model S Rims

    Very interested - PM sent!
  31. johnr

    Supercharger - Traver, CA (LIVE 18 Nov 2020, 16 V3 stalls)

    Lately, Tesla has been making an effort to pair Supercharger locations - for example, Rocklin, Sacramento, Bakersfield, etc. I suspect this location is set to become Visalia's twin and might find itself a little further south than suggested in the map.
  32. johnr

    Super Charger Adapter for US cars in Europe

    There are other sources now. For example EVSE Adapters has them.
  33. johnr

    Want to absolutely confirm: I can charge off a dryer plug?

    You could take a 14-30 adapter and cut off the neutral prong so it'll fit a 14-50 outlet but limit the current to 24A. Software-limited NEMA 14-50 adapters for Tesla are also an option. It's possible to get these adapters programmed for lesser currents, for example a NEMA 14-50 adapter that...
  34. johnr

    32A Commando/60309 Adapter for UMC Gen 2

    It looks to me like the 16A version. The 32A plug would be larger diameter.
  35. johnr

    Supercharger - Visalia, CA (under construction May 2022, 20 V3 stalls)

    I'm happy to hear of some progress now. So, it looks like the superchargers that Tesla promised would be completed in Visalia by the end of 2017 will be completed during 2020. In other words, right on schedule (Tesla timing, of course ;)).
  36. johnr

    Tesla's attorney wants me to stop making charging adapters

    The letter looks rather vague to me. Maybe I'll write a letter back asking for clarification. Adding the disclaimer that I'm not affiliated with Tesla is a good idea - I have just added that today. As it's been requested, here's the "exhibit A" (click it to enlarge):
  37. johnr

    Tesla's attorney wants me to stop making charging adapters

    Well, I didn't anticipate this. Today I received a letter from Tesla demanding that I stop selling Tesla-compatible charging adapters. First a little background: I've always been interested in electric cars, and as soon as I bought my first EV I realized there was a need for adapters so people...
  38. johnr

    Service Center coming to Bakersfield, according to a Tesla Mobile Service tech

    As a central valley resident, I was thrilled to notice Tesla's new service center in Bakersfield. The next closest were Van Nuys and Burbank, a 166 mile, 3 hour drive away which I was getting rather tired of! Now to see Fresno is getting one too - that's two new SCs in my neck of the woods...
  39. johnr

    Question about the wiring of the CHAdeMO adapter

    No success yet. I believe I made all the right connections, but there's no communication between car and charger. I wonder whether anyone else has had success with this. I've seen that short video clip, but it's strange there's no further info from the person who supposedly made it.
  40. johnr

    Change to UMC design

    You're right! The new connector only has two wires for power, one ground, and two signal wires for communication. So I don't see how it would be possible for it to support three phase. Considering how prevalent three phase power is in Europe, this seems like a disastrous oversight. Interestingly...
  41. johnr

    Change to UMC design

    The UMC (portable charging cord) that Tesla used to supply for European customers is pictured at the left, and their new design which is shipping with the Model 3 now is pictured to the right. Meanwhile, the UMC that Tesla used to supply for their US customers had its own different style of...
  42. johnr

    Question about the wiring of the CHAdeMO adapter

    For an upcoming project, I could use a little help from someone who has a CHAdeMO adapter. Using a multimeter or continuity tester, could someone test the continuity from the two large pins on the CHAdeMO end to check which ones they're connected to on the Tesla end? Thanks!
  43. johnr

    Question about the wiring of the CHAdeMO adapter

    For reference, here's a chart I found showing the three compatible modes of the type 2 connection, and the ccs combo variant - I've circled the one that Tesla appears to be using at the Superchargers (the only difference being that Tesla's connector is designed to handle higher current):
  44. johnr

    DIY MS Door Handle Repair

    I just finished repairing my door handle as well. The hardest part for me was extricating the handle assembly. It's a tight squeeze - first the two zip-ties have to be cut without damaging the wire, which was not easy as there's not much room to work, and the assembly has to go through in just...
  45. johnr

    Question about the wiring of the CHAdeMO adapter

    Thanks, Tozz! That confirms Tesla does appear to be following the little-known specification for Type 2 that allows for DC quick charging through a standard mennekes connector, the only difference being that Tesla can push more amps through their beefed-up plug.
  46. johnr

    Question about the wiring of the CHAdeMO adapter

    Could someone who has a CHAdeMO adapter help me out? I'm designing an adapter for the European superchargers for drivers of US vehicles, and of course I need to make sure I get the connections just right. I know the superchargers use the four power pins of their modified mennekes connector for...
  47. johnr

    Battery runs out with 16% indicated range remaining

    This is the new battery I got. Original was an "A" and this one's a "D" so I understand that's an improvement.
  48. johnr

    Battery runs out with 16% indicated range remaining

    Yes, it just gets really hard to turn. In this case though, the 12V battery still had enough energy to provide power steering. I have the classic 85, 2013MY with 128k mi. Hopefully there's no defect with this new battery in which case it should easily outlast the remainder of the warranty...
  49. johnr

    Battery runs out with 16% indicated range remaining

    Well here's the update: My car just got a new battery pack! They're telling me it's a brand new one, not refurbished, so hopefully it will add many years to the life of my car. There was indeed a problem with the original battery that necessitated a replacement, and although the symptoms were...
  50. johnr

    No Supercharging for 40Kwh :(

    Thank you Tam. I've also found this article to be very informative: Decoding Your Tesla Battery Pack Version

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