% IMO, the resolve is to replace the board with a redesigned one  that has a
redundant/mirrored eMMC chip that would take over when the primary fails,
then wirelessly alerts Tesla. In my 25yr hp-ce career, I replaced many a
hot-swappable mirrored/paired drive in customer's servers (ez-peazy).

A Single Component Can Brick Older Teslas and Tesla Won't Fix It
May 10, 2019  Jonathon Klein

Though Teslas—and electric vehicles as a whole—were heralded for their
easily maintained and remarkably simple drivetrain design, reality and
maintenance issues have become a real problem for Tesla. While there have
been a few outlying cases were major componentry goes catastrophically
wrong, most of its issues have been confined to cosmetic or easily fixed
problems. That isn’t the case with Tesla’s eMMC chip, which according to a
number of complaints that allege when the chip fails out of warranty, owners
lose access to the vehicle’s media control unit and bricks the car. 

The issue first surfaced via a report by Roadshow [
] after a YouTube video detailing the issue was uploaded. According to the
video, when the eMMC fails, those Tesla customers outside of warranty
service are out of luck. Tesla doesn’t stock the part, nor will it service
it. As we’ve covered in the past, working on your own Tesla is also a
monumental undertaking that the company doesn’t explicitly condone. On the
specific issue, the eMMC chip in older Teslas is based within the car’s
media control unit and used to log data collected by the media system. 

Evidently, as the solid-state chip has only a finite amount of times its
space can be rewritten, when that space is gone, the chip fails which is
where the real problem starts.

The chip itself doesn’t control any of the car’s actual driving functions.
But the eMMC is so well-integrated into the rest of the car’s controls that
when it fails, you lose access to Tesla’s media suite, much of its systems
like climate control, and in some cases, the car could charge incorrectly
and fail to be driveable outside of its safety mode with less than
advertised oomph. According to the video, the chip can fail after a few
years of use, which isn’t great for customers, nor the environment.

As previously stated, Tesla doesn’t condone customers working on their own
cars, however, a group of mechanically minded owners has assembled a rather
extensive “Service Manual” [
] for the cars and it covers this problem. The service manual created takes
users on a step-by-step guide to replacing and fixing the broken system.
However, it does feature a disclaimer—like every Do-It-Yourself guide—that
tinkering with it could have potentially unforeseen consequences and could
result in injury or breaking the car further. 

Along with that silver lining, the original YouTube uploader who goes by the
name “Ingineerix,” [
] is able to take those faulty eMMC chips from plagued customers and replace
them for customers outside of warranty and Elon’s gaze. 

That said, with Musk’s recent statements of how good his automobiles are for
the environment, and how the company was founded to help mitigate climate
change, the idea of a single chip rendering a relatively new car nigh
unusable doesn’t exactly mesh with one another. Tesla has taken recent
strides in letting customers repair their cars themselves in recent months.
However, until the company starts stocking parts like the eMMC chip, as well
as release detailed service manuals to the public, Tesla is going to be
looking at a number of newish cars dead in a junkyard real soon. 
[© thedrive.com]
eMMC Memory
[image search  
tesla eMMC memory

Tesla Vehicles Can Now Diagnose Problems and Order Replacement Parts
May 5, 2019  Tesla vehicles not only have the ability to drive themselves in
select situations, but they can also apparently order replacement parts for
problems you may not even know exist ... using over-the-air communication to
order parts that, in theory, will repair the self-diagnosed issue ...

For EVLN EV-newswire posts use:


Sent from: http://electric-vehicle-discussion-list.413529.n4.nabble.com/
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)

Reply via email to