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TM3 "Factory Mode" Accessed, Good Amount of New Data

The info on all the redundancy and safety built in is fascinating to read about

Agree. Liked this bit,

Build quality and engineering:
"I've taken apart hundreds of cars so far, and I find the 3 to be well put together and a lot of thoughtful engineering throughout. Particularly impressed by the high levels of integration as compared to S/X. Also going to a electric pump and filter on the DU means they want it to last a long time. Really, the only maintenance most owners will need to perform is adding windshield washer fluid and replacing tires. Maybe a 12v battery every 5 years. Brake pads should do 100k unless you do a lot of aggressive stops."

"I think you must be referring to Sandy Munro. He had a lot to say about the fit/finish and went on and on about how the first responders can't get to the cut loop. First off, none of the fit/finish issues exist on recent the cars I've investigated, and secondly, Sandy's focus on the cut loop is silly. In any accident that would need first responders to cut into the car, the HV system has already been totally disabled by the RCM (Airbag Computer). Anything that matters seems to be really good. I welcome more objective analysis though!"

and this,

"There is a lot of redundancy in critical systems. I've seen it in the BMS, Brakes, Power steering Rack, CAN buses, and Power distribution (no fuses). I haven't had the drive unit apart yet, but I expect it to have some redundancy, or at least built with fault tolerance in mind."
I am not sure if this is something we should have access to. My Freightliner has a computer that has a pin to get into diags, by the time I purchased my motorhome the pin was on the internet either from a hacker or a service person who posted. It's not like I can damage the vehicle with access to service mode, it's just something that is confusing so why make it customer facing? I am curious how to get my M3 into this diagnostics mode, but if it becomes something where you can do bad things to your car by changing settings in there, I guess we shouldn't have access even though it has been opened by hackers (and of course service men, maybe I should get a job fixing Teslas).


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