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'[OT]: Data loggers in new cars'
2002\08\27@092727 by Mark Skeels

picon face
Hi, List.

With all this talk about cars, I thought I'd throw a question into the mix.

I just discovered that my new 2002 Pontiac Aztec may actually be collecting
data about my driving habits. (Of course, it is.) My queston is, how can I
access this data MyOwnSelf?

http://www.activedayton.com/ddn/local/0822car.html

According to this link, it appears to actually do this through the *airbag
computer?*, I guess because it knows when you crash.

For that matter, is there any place on the web where I can learn more about
the computerized aspects of this car? It is the most highly computerized
vehicle I have ever owned, and I'm not sure I completely like the idea. For
example, I cannot "turn off" the headlights. It, and it alone, decides when
they will go off.

It allows me to program the response to the keyfob, opening all doors when I
press unlock, or opening only the driver's door.

And, it tells me when to change the oil; then requires a user-initated reset
of the oil-change system, initiated by three presses of the accelerator
pedal while holding something else in, blah, blah, blah.

Any info would be appreciated.

Mark Skeels
Engineer
Competition Electronics
http://www.CompetitionElectronics.com

------------------
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for reasons of special interest was, as it
often is now, a major part of the
problem."

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2002\08\27@133606 by Herbert Graf

flavicon
face
> With all this talk about cars, I thought I'd throw a question
> into the mix.
>
> I just discovered that my new 2002 Pontiac Aztec may actually be
> collecting
> data about my driving habits. (Of course, it is.) My queston is, how can I
> access this data MyOwnSelf?
>
> http://www.activedayton.com/ddn/local/0822car.html
>
> According to this link, it appears to actually do this through the *airbag
> computer?*, I guess because it knows when you crash.

       AFAIK that computer only logs the last 5 seconds of data before airbag
deployment, it is a "black box" for cars that helps the manufacturers figure
out why an air bad deployed. There is some debate these days over who
actually OWNS the data, since it would be a candidate for evidence in a
court of law.

> For that matter, is there any place on the web where I can learn
> more about
> the computerized aspects of this car? It is the most highly computerized
> vehicle I have ever owned, and I'm not sure I completely like the
> idea. For
> example, I cannot "turn off" the headlights. It, and it alone,
> decides when
> they will go off.

       Chances are no, GM certainly releases ZERO about this sort of thing (other
manufacturers are no different), about the only way to get data is to either
hack it yourself or wait for someone else to do it. For such a new car I
thinik you'll have to wait.

> It allows me to program the response to the keyfob, opening all
> doors when I
> press unlock, or opening only the driver's door.
>
> And, it tells me when to change the oil; then requires a
> user-initated reset
> of the oil-change system, initiated by three presses of the accelerator
> pedal while holding something else in, blah, blah, blah.

       All pretty standard in many of today's cars, like it or lump it I suppose!
:( TTYL

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2002\08\27@140359 by Mark Perri

picon face
There are a few companies on the net that sell kits so that you can interface
with your onboard computer and access much of the same information
that the mechanics at your dealer can.

Try:

http://www.elmelectronics.com
http://www.scantool.net/

http://www.ghg.net/dharrison/obdscan.html

Mark


At 01:34 PM 8/27/02 -0400, you wrote:
{Quote hidden}

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2002\08\27@142031 by Herbert Graf

flavicon
face
> There are a few companies on the net that sell kits so that you
> can interface
> with your onboard computer and access much of the same information
> that the mechanics at your dealer can.
>
> Try:
>
> http://www.elmelectronics.com
> http://www.scantool.net/
>
> http://www.ghg.net/dharrison/obdscan.html

       Actually those are for a different computer. There are various computers in
todays cars, usually you have one for the transmission, one for the ABS (and
traction control), and the main unit (called the ECU or ECM). There are
others as well but these are the main ones. The tools you mention tap into
the bus that interconnects these computers (called OBDII, I believe it's
just a CAN bus but I might be wrong).

The comptuer the other poster mentioned is actually a data logger that logs
the last 5 seconds of data before an airbag is deployed. Usually it logs:
speed, engine RPM, gear, throttle position, brake activation, G forces. This
box is used by the manufacturer to determine why an airbag deployed (and if
it SHOULD have deployed). TTYL

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2002\08\27@144331 by Peter L. Peres

picon face
>        Chances are no, GM certainly releases ZERO about this sort of
>thing (other manufacturers are no different), about the only way to get
>data is to either hack it yourself or wait for someone else to do it. For
>such a new car I thinik you'll have to wait.

Do you propose to hack the computer 'squibbed' by the airbag deployment
device ? ;-)

Peter

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