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There is a place in Eindhoven that replaces the Chip, with a bigger chip, for about €550

Well most of us are still under (battery) Warranty. The issue is our understanding of what’s covered under the Warranty, and Tesla's. Having an 8 year Warranty that they say doesn’t apply in our circumstances, doesn’t help much.

I think the primary factor responsible for this crash was the driver using AP as a Self Driving feature instead of a Driver's Aid, and playing a game on his phone instead of watching where he was going would not have help. I have a strong sense that if drivers would use AP as it is designed...

Apologies for drifting slightly off topic, but I hate to say it but that sounds very like many of the reports of imminent eMMC failure. I had it fail on mine. It started with more than normally poor performance on MCU. Slow to react, slow to wake up, wouldn’t connect to Internet, random screen...

Reference the ‘don’t leave it at a high state of charge for long', I have never found a satisfactory answer to how long is too long. 3 minutes, 3 hours, 3 days, 3 months? On the very occasional time that I need 100% for a long leg, and it is very rare, perhaps twice in 4 years, it’s normally...

Completely agree. But of course leaving it highly charged for a while, and frequent charging to a high SoC are two related but separate issues. I have always found this chart compelling.

What's an eMMC? About £3500 if Tesla replace it. Or £500 if done by a Third Party.

When my eMMC chip failed, the MCU stopped working completely. Nothing that was controlled via the MCU worked. The car certainly wouldn't Charge on AC. But many owners told me it should still be able to charge on DC which apparently bypasses the MCU, ie from a Supercharger. I did not have time...

The Moderator advises us that there was 'enough snippiness here' that he nearly put it all in the Snippiness thread. I found that a surprising statement. I like to think I take some care never, ever, to be rude, and having gone back over the posts I only see, what I consider, reasonable...

Don’t disagree. Although if it’s written off, what’s the problem with buying another one with the insurance, that hasn't been crunched. But I completely accept some write offs are repairable. In your example, you would still have to get Tesla to inspect and approve it for Supercharging. They...

But that says they are only going to permanently disable Supercharging on cars that have been written off. So no wrecks glued back together and back on the road. Good thing. So write offs, once written off, only useable for spares. Perhaps a bit extreme, but not sure its going to stop me...

Yes, they probably forgot. That’s probably it.

Vmax Capping just means they have lowered the rate at which the BMS stops more charge going into the battery. 100% does not mean 100% full. It did not mean 100% full before capping. 100% only means At Vmax. ie the charge level is at whatever level Vmax has been set at. Prior to that point BMS...

I have had a similar conversation. When I asked why my car had been capped, one version of the answer was because of my DC charging history. When I explained I had deliberately public DC charged (38-40 kW) in preference to Supercharging (90+ kWs) their reply was 'slow DC charging for a longer...

Either the external Chargepoint delivers DC to the battery, or the car’s on board charger delivers DC to the battery. In theory, if the BMS is working properly, it shouldn’t make any difference. At the top end (ie above 90%), whichever option is used, the rate going into the battery should...

Ok. Your professional history makes you unusual on here, with probably a unique perspective on this. Many of us have had to conduct a great deal of research into Lion batteries, battery tech, Tesla tech and a whole host of other areas that were, for me at lest, very new territory. I certainly...

I might be encouraged by that. The next message may say your battery is toast, and that you get a replacement battery out of it.

I agree that is the commonly accepted dogma. But Tesla recommend keeping the car plugged in, and that charging to 90% is fine. Ergo Tesla recommendation could see an owner having their car plugged in every night, with a charge setting of 90%. After a month, the battery may have been at 90% for...

We are regularly advised that it isn’t the charging to 100% that is bad, it’s the leaving it at that level for some time. It is perhaps one of the most frequently posted bits of advice on EV ownership. However trying to track down how bad is it to do so, ie what damage actually happens, is a...

Are you able to expand on what the ‘bad charging habits’ are?

If you charged to 100% you would indeed have no regen. If your battery is full up there is nowhere for the regen to go.

John, I am based in UK so in a similar situation as you. As for the US Class Action, as I understand it, all cars worldwide that are in the same position (in the same Class). But I am not so sure that any California court decision would have any tangible effect in Europe. Tesla may decide to...

Alarm bells should be ringing, and this is just another example of 'the only thing needed for bad people to succeed is for good people to do nothing’. They capped 90s to a slower charge speed. Owners complained, but Tesla ignored them and stood firm. They capped the battery. Owners complained...

I also thought this. But apparently not.

I have no idea how they remanufacture packs. But several times on here, including from Jason, we are advised that the chances of an odd Module fitting in with the rest of the pack, is less likely than winning the lottery. A great pity as it would be an easy, and acceptable, solution to many...

Good idea except you can’t just swap modules in the way you describe. Shame really otherwise that might be a solution for all of us.

I loved that summary. Spot on. The previous 10,000+ posts seem to be trying to answer why. But the actual problem is not why, but rather the effect of the solution, specifically reduced available capacity resulting in reduced range and power. Range and power that many owners paid more money to...

I think it might if the previous degradation was caused by Tesla. I'm sure there are laws that prevent Warranties from excluding legitimate and legal culpability. In the supercharging scenario, if Tesla said buy this car and use our powerful and fast Superchargers, but those Superchargers then...

My department used to have a small team of lawyers working for me. That is the sort of debate they used to give me. ie the capping was as a RESULT of degradation, and not degradation of itself. But if we use that statement as the basis, then the magnifying glass needs to be refocussed on what...

The difference is generally believed to be regen. As a comparison, on mine the readings are: Total charge 27,100 kWh Total DC is 20,308 kWh Total AC is 2,773 kWh Difference 4,019 kWh (14.8% of total) But I agree, your ‘difference or regen’ figures look surprisingly high...

All very clear. But you would think Tesla, at least, would be able to source the daughter board and make for an easier fix. One final question. Is there a specific benefit in soldering the chip to the board?

Got it now, I think. Not only does it store the car logs (important) but also the Linus OS logging (unimportant). I was Interested to hear at 20:00 that the eMMC Chip sits on a small separate standard NVidia Circuit Board. I did wonder why just replacing that Board wasn’t an easier option than...

@scaesare Reading over my reply, it sounds like I am questioning your correction. I would like to make clear that is not what I meant. I’m the first to admit this area is not my speciality. Although the video seems to say one thing, it is vague. So I am very happy to say I am far from sure about...

Slightly off topic, but just so people are aware, this was explained to me by a Ranger. The yellow border issue was simply the glue holding the screen on, going yellow. It did not affect the function of the screen at all. But it was unsightly. Initially Tesla we’re replacing the screens, but the...

This seems a good and cheap solution, but it will not work. The new chip requires some critical files, specific to the old car, to be transferred to the new chip. Apparently it’s not that easy a process. And I have absolutely no idea how easy, or difficult, taking the MCU out would be.

Yep older MSs (pre face lift) had 11kW onboard chargers. Those that paid for dual chargers could draw 22 kWs, but that required 3 Phase supply for the post to deliver more than 7kW, so most owners opted for a Chademo Adapter, which allowed for 50kW DC, and was a significantly cheaper Option. The...

The whole eMMC thing is explained in this video, by a guy that does this for a living. A long video, but the relevant bit about eMMC is at 9:00, and he explains the car logging going to a separate SD Card at 9:30. And isn’t the eMMC Solid State rather than flash? (Not 100% sure and it doesn’t...

I don’t think there is any link. The onboard charger's job is to convert incoming AC to DC. So it would have zero effect on incoming DC current, which bypasses the onboard charger, and goes straight to the battery

Not as such. A lot of people complaining about slower charging rates, but nothing on cars havingDC charging problems.

This seems a good and cheap solution, but it will not work. The new chip requires some critical files, specific to the old car, to be transferred to the new chip. Apparently it’s not that easy a process. And I have absolutely no idea how easy, or difficult, taking the MCU out would be.

Interesting. In UK there appear to be a growing number of eMMC failures. Some within Warranty period, others not. Tesla have recently been saying it’s not a Warranty failure, even if it is within Warranty period. It is causing a lot of angst amongst owners. The issue, apparently, is the amount...

From @tga's post, I would venture to suggest that as it seemed to affect all cars that tried to Supercharge, it is likely to be a site problem. Have there been any similar reports from other sites?

The figures for a new 85 Pack were 81.5kWh Total, 77.5kWh Usable. (Full figures above at post 10,366), so I agree, your pack seems pretty healthy. The Warning that some owners are getting after 2019.40.2 was “Maximum battery charge level reduced”. That indicates a replacement battery is...

As did LOTS of people. It was only when Jason Hughes started taking them apart that it all became clear. This is what he found out.

That’s a good question. On one hand, the voltage strongly, very strongly, suggests you haven’t been capped. On the other hand you definitely have less capacity. And it’s a significant drop. I can’t think of a logical explanation. It makes one wonder if they have developed a new method of...

The 85kWh pack was only ever 81.5kWh total, 77.5 kWh usable. But I would agree with @ran349, if your average Voltage is 4.193V at 99%, that’s not far off 4.2V @ 100%, so I would tend to agree that you’re unlikely to have been capped.

Hey don’t drag me into this firefight! And I have no recollection of ever having said that. I do recollect saying, on more than one occasion: 1. Everyone is entitled to an opinion. 2. Everyone is entitled to express that opinion. 3. There is no obligation on others to agree that opinion. 4...

Great news. I’m really pleased you are getting sorted.

A private party in England

It’s true. The older your car is, the more opportunity it will have had to be infected by software that will do bad things to your capacity and chargerate