Info on downloading the logs, and the parsers for looking at them can be found here: VMS Log Parser for Tesla Roadster You may find interesting things in the log, besides error codes. For example, a few months before I bought the car, it apparently went on a nice little cruise at just over 100 mph. Can't tell where, though.Thanks for all the advice!
I think I"ll place the order for the OVMS this weekend that sounds invaluable to have and not very spendy - I see there's a v3 and v4, I assume I want v4?
I was going to probably drive this thing (fairly sparingly) for a few months before deciding what to do on brakes & suspension but it does sound like those are worthwhile upgrades. Appears I do have the locking lug bolts though, where can I find the replacements?
Is there a good link for how to download the logs? Car only has 9500 miles so I'm not sure if this has been looked at before but would like to get myself educated on how best to care for the car.
By the way what is a typical good/bad ideal range at a full charge?
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As for the lug bolts, I got them through the Tesla Service Center. The full set of 4 cost just under $30, but they had to put one of their kids up as collateral to borrow a set of keyed sockets from another service center to get the rest off. It's not a panic item but a recommendation, and of course depends on your location's risk profile. See Looking for "D" wheel key for the full story.
I believe the v4 of the OVMS is mostly a newer processor board (though I thought it would be "v3.3"), to keep it in production as the chip industry moves forward. The main thing to get is one with the 4G modem, as the 3G stuff is being shut down. Otherwise, you'll eventually be stuck with only WiFi access to it. (And, yeah, the car's own 2G modem became useless years ago, so Tesla themselves have no remote access.)
"Standard Mode" charging (which you should use when at all possible) I think was something over 180 miles with a brand new battery. My car would charge to 174 when I first got it in late 2014. It's down to about 159 now. The car had ~26k miles when I got it; ~55k on it now. "Range mode" was about 212 last time I did one a few years ago. You'll get a little higher range in the summer, and a little lower in the winter, due to the ambient temps, but only by a mile or two. Don't get too obsessed over small changes.
Have fun!