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BMW PHEV: Safety fuse replacement is extremely expensive

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Re: BMW PHEV: Safety fuse replacement is extremely expensive

#361

Post by dotancohen »

iSnow wrote: post #207
richx wrote: post #183

Earlier quoted context omitted.

I am affacted by this as well: the rear knuckle uniball bearing was broken after 3 years (Achsschenkel). Many MY here in Europe have this issue, due to bad parts or too hard suspension. But there are two other things that make it a bit unfair for Tesla in comparison to other brands: Often the cars fail official inspections because of rotten breaks - this happens when your drive carefully and the Tesla is using regene…

>Often the cars fail official inspections because of rotten breaks - this happens when your drive carefully and the Tesla is using regenerative breaking Huh? Every EV uses recuperative braking, how is this special to Tesla?

The Teslas have far stronger regen than other brands. Have you ever wondered why Tesla's Long Range models have 500 horsepower? It's not for increased acceleration power, it's for increased braking power. Far less energy is wasted on the friction brakes in a Tesla.

Re: BMW PHEV: Safety fuse replacement is extremely expensive

#362

Post by jandrese »

amelius wrote: post #347
Kirby64 wrote: post #322

Earlier quoted context omitted.

Running an EV off 48V would lead to a heavily, heavily compromised vehicle. There just aren’t components that can handle 5-10kA of current with a reasonable size.

What parts of the car need that amount of current? Are you talking about the charging circuitry? What are the requirements for the motor(s)?

Charging speed is directly related to the voltage of the pack. Even if your own vehicle had arm-thick cables to support high speed charging at 48v there is no quick charger in the world that could support it. You would be stuck in the bad old days of needing hours to recharge the battery on your EV.

Re: BMW PHEV: Safety fuse replacement is extremely expensive

#363

Post by dotancohen »

kotaKat wrote: post #238
iSnow wrote: post #207

Earlier quoted context omitted.

>Often the cars fail official inspections because of rotten breaks - this happens when your drive carefully and the Tesla is using regenerative breaking Huh? Every EV uses recuperative braking, how is this special to Tesla?

German TUV thinks Teslas are horrible because apparently nobody is servicing their brakes on a regular enough interval so every time Teslas get pulled in for their 2 year inspections after 3 years of ownership they keep failing out on brakes and suspension, but VWs are the pinnacle of perfection because they slam 10K service intervals in your face. (Of note: I drive a hybrid vehicle, and over 125,000+ miles of owners…

I'm at 125000 on my Long Range Model 3. I plugged a tire last month and photographed brake caliper - like new. I could not believe it. I can upload a photo if you'd like.

Re: BMW PHEV: Safety fuse replacement is extremely expensive

#364

Post by ariwilson »

Compare this car to the Toyota RAV4 PHEV which in some ways is simpler than a gas powered RAV4 (no alternator, no transmission) but maintains the same ease of maintainability and cheap parts availability as the base RAV4 (makes sense, they sold >4M of them).

PHEVs are complicated tech so I figured I would choose one with a proven design (Prius -> Prius Prime -> RAV4 Prime).

Re: BMW PHEV: Safety fuse replacement is extremely expensive

#365

Post by BobBagwill »

The goal is to eliminate outright vehicle sales, and move everyone to leases and rentals? Just like in software? Safety is important, too (nudge nudge wink wink).

Given that speed and alcohol are the top two causes of traffic deaths, mandatory SAE J3016 Level 4 self-driving would prevent a lot of deaths. But of course, it will make the price of a "safe" automobile many times the annual income of 99% of North American and EU drivers.

Even a FAANG HENRY who would buy a BMW i7 M70 won't be able to afford a "safe" automobile in a "safe" country.

A Waymoid is your future, first-worldians!

Re: BMW PHEV: Safety fuse replacement is extremely expensive

#366

Post by constantcrying »

prepend wrote: post #336

It’s funny how I extrapolate car design sessions in my head based on software design sessions. I sold my bmw after 15 years of multiple bmws because their design is so poor for maintenance. I had cooling system problems that required hours of labor to get to just to replace a plastic part that cost $5 where an aluminum one would cost $7. It seems to me that bmw was designing for best case scenarios where everything g…

>I had cooling system problems that required hours of labor to get to just to replace a plastic part that cost $5 where an aluminum one would cost $7.

If the car has 10 places where the manufacturer saves 2 dollars, that is 20 dollars a car. At around 2.5 Million cars shipped each year that is 50 Million Euros each year profit for BMW.

The entire car industry is extremely cost sensitive, especially right now, with so much global competition and little consolidation.

The issue also isn't that the part is cost optimized. The issue is that it fails.

Re: BMW PHEV: Safety fuse replacement is extremely expensive

#367

Post by kotaKat »

dotancohen wrote: post #363
kotaKat wrote: post #238

Earlier quoted context omitted.

German TUV thinks Teslas are horrible because apparently nobody is servicing their brakes on a regular enough interval so every time Teslas get pulled in for their 2 year inspections after 3 years of ownership they keep failing out on brakes and suspension, but VWs are the pinnacle of perfection because they slam 10K service intervals in your face. (Of note: I drive a hybrid vehicle, and over 125,000+ miles of owners…

I'm at 125000 on my Long Range Model 3. I plugged a tire last month and photographed brake caliper - like new. I could not believe it. I can upload a photo if you'd like.

.... I also didn't add the rest of my environmental conditions like the fact I'm in an absolute rust belt in the winter.

NYS DOT does some good work with the salt and sand up here, heavy on the salt. Mother Earth has some high blood pressure up here as she turns rotors to rust.

My calipers (all around) are also in excellent condition after 150k and I've been told that it's an absolute surprise I didn't destroy them with how low the pads went on the last change...

Re: BMW PHEV: Safety fuse replacement is extremely expensive

#368

Post by jandrese »

jinzo wrote: post #333
close04 wrote: post #297

Earlier quoted context omitted.

> Yes, as changing a tire is completely the same tool-and-knowledge level than repairing a EV Battery. I think you are intentionally misrepresenting this and moving the goalposts to make your point. GP blamed safety and liability for the way the process looks like, not the complexity of the task. When it comes to safety you bet that an improperly installed or inspected wheel or tire can be dangerous. A short internet…

> I think you are intentionally misrepresenting this and moving the goalposts to make your point. GP blamed safety and liability for the way the process looks like, not the complexity of the task. When it comes to safety you bet that an improperly installed or inspected wheel or tire can be dangerous. Sorry that you feel that way, it was not my intention. But improperly installed or inspected wheel or tire is A LOT l…

Improperly installed wheels that have fallen off of vehicles in motion have killed not only the occupants of the vehicle but pedestrians and other motorists (especially motorcyclists) in the past. We also allow people to fill vehicles with highly combustible fluids with little to no oversight, which has caused fires and deaths.

There is a certain level of risk that is inevitable with moving multi-ton machines at lethal speeds, and deciding that this particular issue is where we are going to draw the line is dubious.

The point that "allowing this fuse to be replaced affordably is too much of a safety issue" is a cop out is valid.

Re: BMW PHEV: Safety fuse replacement is extremely expensive

#369

Post by constantcrying »

mvkel wrote: post #130

This is what makes Teslas sustainable and other car cos, like Porsche, not. A battery pack for a Model 3 is $10K. So even if the whole car is only worth $20K, it's still worth keeping on the road. The Porsche Taycan battery pack is $70K. The moment you have any issue at all with it, the car will be considered totaled.

That is such a terrible example. Why are you comparing Teslas to cars where the battery pack costs more than the Tesla, instead of the myriad of competitively priced models?

Re: BMW PHEV: Safety fuse replacement is extremely expensive

#370

Post by torginus »

gambiting wrote: post #354
Workaccount2 wrote: post #349

I don't know how "German engineering" became a badge of honor. Probably from the people who continually roll new leases every 2 years. Even 25 years ago working on German vehicles compared to the Japanese counter-parts was a harrowing endeavor. Germans are excellent at making cool flashy features...that rely on 16 moving parts that cost $700 each, and need to remove the engine exhaust manifold to access one screw to…

>>Probably from the people who continually roll new leases every 2 years. 100% this. BMW's own stats say that something like 90% of buyers of new BMWs keep them for 3 years or less. The fact that parts like oil pans are made out of plastic or that lately all their gearboxes have the oil drain port completely removed is just irrelevant to the buyers because none of them care about keeping the car for a decade like peo…

This reminded me of the video about the Tesla door handles, where its explained how they redesigned the retracting door handles of the Model S from having a bunch of switches and mechanical parts to just a motor + a position sensor:

https://www.youtube.com/watch?v=Bea4FS-zDzc

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