Search results

Lots of work and lots of changes. My time has been extremely limited. There's actually nothing unhandled in the ESP work queue at the moment, and I don't see any unanswered ESP requests when skimming through tickets. As of right now, no one who requires service under the ESP is unhandled as far...

Quickbooks backend integration is borked at the moment.

Lots going on. Some good things, some not great things. Frontline support is stretched thin at the moment and we're just not getting to all calls/emails. Will post an update soon.

We've stopped offering it for the moment. We don't have the labor bandwidth for it right now unfortunately.

Yeah, if a line bursts you still have some brakes. I believe it's front right and rear left paired and front left and rear right, actually. I suppose, but seems highly unlikely. That'd be an insane failure. It'd also be incredibly messy any obvious. And you're right, would be incredibly...

Unfortunately the scenario, as described, is a work of fiction. There's no reality where things could have occurred as outlined here. Again, if you hit the brake, the car would have slowed/stopped. You did not. You may think you did. May even firmly believe you did. Dare even say you know...

Our webserver crashed about a week ago. A 4x drive RAID1 failure... 😖... one drive failed, then a faulty controller decided to corrupt everything. Remember, RAID is not a backup solution! So restored everything from backups to a temporary VM within a few hours. Replacement server should be up...

https://teslamotorsclub.com/tmc/posts/1975464/

This is technically an ongoing bet, but in fairness everyone who's taken me up on it I've never held to paying me. It's effectively impossible for me to lose the bet because it's impossible for SUA to actually happen. I recently debunked this on Twitter.

Video's been delisted, but it sounds like you nailed the accelerator pedal instead of the brake, the obstacle aware acceleration then greatly limited the power output instead of lurching forward Tesla launch style. Driver error... and the software doing what it was supposed to do and help...

We've worked on hundreds, if not more, of these packs. We sometimes do multiple repairs/replacements in a day at this point. "Well it worked for me" doesn't really carry over to what is generally the case.

This isn't necessarily true, and probably jumping the gun on a diagnosis. I don't know how many times we've had cars here from after people have attempted their own repairs or repairs by a very unqualified 3rd party only to have them fail and end up with us for a repair/replacement. The...

Heavy rain shouldn't be a problem, but if the rain somehow got the car to be sitting in standing water up to the battery pack, that'd be the issue.

Those errors suggest a water damaged pack, sadly. "Before" has somehow turned into "almost every day". lol

Random note: I've got a way to get most Model X and Refresh S's to hit max supercharge speeds (breaking the 150 kW barrier) with 100 upgrades now at no additional cost beyond the upgrade itself. (Still working on a cost effective solution for pre-refresh S's to beat 150kW.) I obviously can't...

https://skie.net/skynet/projects/tesla/view_post/23_Explaining+Changes+post-firmware+2019.16+Regarding+Range+Loss

Yeah, that one is more iffy to me... but I feel like Tesla would still win that if argued well.

(BMW_029.... hmmm 😅 ) Considering the updates actually have nothing whatsoever to do with the cause of the issue (as I've said many times before), it'll be interesting to see what kind of angles the lawyers come up with. There's only two possible states with regard to this: You have a vehicle...

The steering rack has a 50A reasonably fast fuse... you're not pulling 100A with it.

I did a Twitter on this. If I ever get the time, I'll try to do a video debunking all of the SUA claims with log data, hardware analysis, software analysis, etc... but that's a tall order I probably won't have the time for any time soon.

I'm not sure even the undocumented commands were intended to reset this particular error, though. More of a secondary effect rather than intended behavior, IMO.

Because there's no way to actually repair it. BMS_u029 is unrepairable, so why should there be a way to reset it?

The 100s are actually slightly more efficient on the highway, as there's more cells in parallel so less drain per cell and thus less internal heating losses (takes longer to drain the pack, so less strain per cell). In city driving they're slightly less efficient due to the small added weight...

This is once again not how any of this actually works, nor is it how it's even implemented on the inverter. I don't have time to dive into all of the details this evening, but suffice it to say I skimmed the document linked and it looks to be basically the same bogus claims about voltage drops...

You can't use 1014114-00-D in an AWD car.

You can't rely on readings from SMT and similar tools while pulling any load (driving, HVAC, etc) or charging. They take a full ~5-10 seconds to get the voltage readings from each cell group, and they'll always differ in that time period if not idle. So kind of useless under load/charge.

This mainly. If you're < 20mV delta at 40-60% SoC, then most likely there's no issue. Pack capacities vary significantly, and tend to settle around their true initial values after a few months of use. For example, the S 100kWh packs have a wide range from about 93 kWh to 103 kWh of real...

> 20mV is borderline, depending on SoC. If you're at > 20mV no-load at 50% SoC, that's usually an indicator of an issue or pending issue. Not always, but these apps don't get enough info to truly diagnose anything at all.

We do 60->70, 75, 85, or 100. Can also do 60 -> P85.

The master BMS has some components that run directly from HV, and the boards on each module are powered by the module.

"Need" is a strong word. 😉

The only upgrade that somewhat guarantees increased supercharging speeds is the 100. (I only say "somewhat guaranteed", because I can't guarantee what Tesla changes or doesn't change in the future.) Free use supercharging is unaffected by any upgrades we do. Currently no way to do this in...

This has nothing to do with battery health, and doesn't even accurately represent the usable energy. It's from a third party tool that uses the Tesla mobile API.

The SoC exposed to the user is the BMS's best estimate of usable capacity. It adjusts this on the fly, and under normal circumstances you can be pretty well assured that if it says you have x% available, you have x% available. If it's inaccurate for some reason, there's generally no way to...

The Tesla BMS has no ability whatsoever to shunt current around bricks during charging. The only control lever it can pull at the cell group level is to enable or disable 100mA of bleed resistors. They can only discharge groups. There's zero ability to charge them or bypass them or anything...

It looks like this particular person backtracked on a bunch of them (or you guys removed them?) anyway. And if they don't count anymore, then that's fine. I'm not sure that's the best approach (there are posts that need to be "Disagree"'d into oblivion for sure), but guess that's how things...

Elon actually doesn't know what he's talking about here. (And I do believe I already debunked this back when that tweet was posted, too.) He's correct that driving until the car stops moving won't hurt the pack (as long as you recharge relatively soon afterwards), but there is no "reserve". 0...

I've had a homebrew supercharger built for a while (120kW max currently), but it's not something quite ready as a product I could sell.

Quick updates: We're getting our lead times on the upgrades and replacements way down. Goal is to be able to have you place the order, get you scheduled, get your car here, and have it back to you in as little as a week (couple weeks for further away folks). We're not quite there yet, as...

Seems someone doesn't like reality and decided to spam disagree unrelated posts of mine. lol. Capacity is not determined from voltage alone. Tesla's BMS tracks a LOT of variables besides voltage to be able to accurately track capacity, including highly accurate usage/regen/charge data at high...

As the only person outside of Tesla with any real knowledge of the inner workings of the Tesla BMS: Respectfully, you have no idea what you're talking about and should probably stop. Also, I've made no personal attacks, so probably best to not try to lie about such things. Tesla's BMS tracks...

According to that you have a nearly 300mV imbalance, so something is failing.

Our guys can help. Give us a call or shoot us a note. https://057tech.com/contact

Hidden capacity below 0% would be for people who don't know how to read their dash. 0 means 0. If it says 15 miles left and you try to go 25, and you don't make it... that's not the car's fault. That's the driver's fault. If it says 15 and it dies after 5 miles and shows 10 left but won't...

We can do upgrades to 100 on almost any S/X now, and we're getting the lead times way down, too (although the website doesn't show this yet). 😃

There was never any usable buffer below 0%. Never. Not on any Tesla vehicle. Anecdotal reports of some folks able to drive below 0% are pure luck. If you're able to drive below 0%, it means the BMS was being overly conservative due to one or more conditions that prevented it from accurately...

How exactly is a reset "solution" still being pushed? https://www.autoevolution.com/news/bmsu029-error-reset-causes-first-confirmed-blaze-on-a-tesla-model-s-215546.html It's to the point where I think TMC might need to add some moderator notes promoting safety on posts that mention BMS_u029...

Getting there. Give me a few months. :)

Tesla definitely does not do many repairs on battery packs. At best they'll replace the main fuse and contactors. Anything beyond that they won't do and will tell you that you need a new pack.

The errors shown are from an HVIL issue (safety loop of the HV system that runs through a bunch of different components), so could be a bunch of different things... but 100% not the contactors. Could be anything from a loose screw to a bad drive unit. But the contactors are completely...