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  1. fxstein

    No Error Codes: How to change or disconnect the 12V Battery w/o throwing errors

    Turns out there is a safe and seemingly reliable way to disconnect and or change the main 12V battery on 2023+ Gen 1 Single Battery R1Ts (and most likely R1Ss) - at least as of firmware 2024.51.02 (not tried or tested earlier). Here are the simple steps that allow you to prep the car for...
  2. fxstein

    Installing HomeAssistant to capture Rivian API data - DIY How-to

    As discussed in various other threads like Analyze your Rivian's data with ChatGPT AI there is a widely used home automation platform that is fully open source that can help collect and store your data: HomeAssistant I have been using it for several years and was actually writing my own version...
  3. fxstein

    Analyze your Rivian's data with ChatGPT AI

    Lots of things going on with Rivian vehicles under the cover. Also significant changes happening from firmware to firmware update. Seeing lots of discussions about phantom drain, charge rates, range. As a data analytics person and former data scientist (and electrical engineer) I like data. My...
  4. fxstein

    Tools and Retainer for DIY service and mods

    Have been looking for tools and retainers/clips to safely work on stuff and know that if a retainer breaks (because it was stuck too hard) I have spares. Found a great kit on Amazon that comes with everything I need to work n my Rivian. Turns out one of my clips for the driver side frunk...
  5. fxstein

    Küat Piston Pro X 2+2 Bikes w/ Pivot V2 Installed

    Have been using this on for a while now for 2 Specialized Turbo bikes, but wanted a setup for 4 bikes. Kuat makes this extensible hitch rack for 2 bikes with an optional 2 bike extension that can easily be removed with 2 screws and a cable disconnect. Also wanted a setup with lights. Because of...
  6. fxstein

    R1T OEM Dark 20" Wheels w/ Nokian Hakkapeliitta LT3 275/65R20 installed - initial impressions

    Picked this combo in part because of the official Rivian winter tire recommendation (does not need to be recalibrated as it matches the OEM Pirellis) and because of the various positive reviews on the forums here. Got an extra set of rims from Rivian as well as the matching tire pressure...
  7. fxstein

    Milwaukee Packout organizers for the frunk

    Love those Milwaukee Packout organizers. Have started to use them in the garage, for tools, parts and more and more so on the truck. I have a set of them on a Mole panel in the back of the truck and was looking at adding a few small ones to the frunk. Found a great aluminum mounting plate on...
  8. fxstein

    Rivian R1T Quad Gen1 2023 Horn Repair - Mobile Service

    Got to experience the Mobile Service team visit me today in NorCal. My stock horn (I know, I know, ...) started to sound broken and had to be replaced. Excellent experience and the perfect weather to watch and learn. Whole front bumper had to come off, something I would have never attempted...
  9. fxstein

    Gen 1 Battery Discharge update for 2024.47.01 and 2024.51.01

    Have been keeping a good eye on discharge patterns and did a long test over the holidays to measure the self discharge of the vehicle in Conserve + Shipping Mode. From 12-4-24 until 1-14-25 the car discharged from about 85% down roughly 50% loosing around 0.79% of charge per day or about 1kWh...
  10. fxstein

    Rivian Dashboard for Upcoming Longterm Phantom Drain Test

    As I am doing final preparations to ship our R1T Quad to Europe in Q1 2025 I have finally setup a detailed dashboard for the R1T with our Home Assistant instance, similar to what I have been using for our Tesla's. The unofficial Rivian API is still a bit limited but does provide a wealth of...


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