Transponder key lost. How to bypass.

S

Section 8

Guest
The transponder unit inside a BMW uses a series of pulses sent to
Engine Computer for verification. I like to record this signal and play them
back on my desktop PC's music program. I've lost this key once and it
cost $200US to get another. I will use a hand held tape recorder to
record the series of pulses. How do I convert a data (electrical, 3vdc)
signal into a usable sound waves using a microphone?

Thanks
 
"Section 8" <none@yahoo.com> wrote in message news:<c7d9bad82eaecab0c4dba699b852ebda@news.bubbanews.com>...
The transponder unit inside a BMW uses a series of pulses sent to
Engine Computer for verification. I like to record this signal and play them
back on my desktop PC's music program. I've lost this key once and it
cost $200US to get another. I will use a hand held tape recorder to
record the series of pulses. How do I convert a data (electrical, 3vdc)
signal into a usable sound waves using a microphone?

Thanks
Click to expand...

You will have to use the d.c. pulses to switch an audio signal on and
off, and record that.
 
Section 8 wrote:
The transponder unit inside a BMW uses a series of pulses sent to
Engine Computer for verification. I like to record this signal and play them
back on my desktop PC's music program. I've lost this key once and it
cost $200US to get another. I will use a hand held tape recorder to
record the series of pulses. How do I convert a data (electrical, 3vdc)
signal into a usable sound waves using a microphone?
Click to expand...
It may not do you any good. If the BMW key uses a coding scheme similar
to RF garage door openers (even the cheap ones), each transmitted code
is unique and can't be replayed.

--
Paul Hovnanian mailto:paul@Hovnanian.com
note to spammers: a Washington State resident
------------------------------------------------------------------
2 + 2 = 5 for extremely large values of 2.
 
How do I convert a data (electrical, 3vdc)
signal into a usable sound waves using a microphone?
Click to expand...
You don't. You use a suitable antenna and radio reciever.

(It won't work, but you sound like someone who should be encouraged to
waste your money trying...)
 
And somewhere around the time of 07/29/2004 23:34, the world stopped and
listened as Section 8 contributed the following to humanity:

The transponder unit inside a BMW uses a series of pulses sent to
Engine Computer for verification. I like to record this signal and play them
back on my desktop PC's music program. I've lost this key once and it
cost $200US to get another. I will use a hand held tape recorder to
record the series of pulses. How do I convert a data (electrical, 3vdc)
signal into a usable sound waves using a microphone?

Thanks
Click to expand...
I can point you to several places where you can get info on building
one, but the problem is that sound has nothing to do with it. It's an
RF signal that the transmitter sends to the vehicle. Each one sends a
digitally encoded signal to the car, similar to a garage door opener.
The signal is unique to the vehicle and cannot be played back,
considering that some of these rotate frequencies and codes to help
prevent theft.

Your best bet is to drop the US$200.00 and get another one.

--
Daniel Rudy

Email address has been encoded to reduce spam.
Remove all numbers, then remove invalid, email, no, and spam to reply.
 
My adage is if he can afford the flippin BMW he can afford to purchase the
correct item at the dealer.
"Daniel Rudy"
<i0n1v2a3l4i5d6d7c8r9u0d1y2e3m4a5i6l7@n0o1p2a3c4b5e6l7l8s9p0a1m2.3n4e5t6>
wrote in message news:a7LOc.2758$4I5.1476@newssvr27.news.prodigy.com...
And somewhere around the time of 07/29/2004 23:34, the world stopped and
listened as Section 8 contributed the following to humanity:

The transponder unit inside a BMW uses a series of pulses sent to
Engine Computer for verification. I like to record this signal and play
them
back on my desktop PC's music program. I've lost this key once and it
cost $200US to get another. I will use a hand held tape recorder to
record the series of pulses. How do I convert a data (electrical, 3vdc)
signal into a usable sound waves using a microphone?

Thanks


I can point you to several places where you can get info on building
one, but the problem is that sound has nothing to do with it. It's an
RF signal that the transmitter sends to the vehicle. Each one sends a
digitally encoded signal to the car, similar to a garage door opener.
The signal is unique to the vehicle and cannot be played back,
considering that some of these rotate frequencies and codes to help
prevent theft.

Your best bet is to drop the US$200.00 and get another one.

--
Daniel Rudy

Email address has been encoded to reduce spam.
Remove all numbers, then remove invalid, email, no, and spam to reply.
Click to expand...
 
And somewhere around the time of 07/31/2004 05:07, the world stopped and
listened as Art contributed the following to humanity:

My adage is if he can afford the flippin BMW he can afford to purchase the
correct item at the dealer.
Click to expand...
Yeah, I have to agree with that myself.

"Daniel Rudy"
i0n1v2a3l4i5d6d7c8r9u0d1y2e3m4a5i6l7@n0o1p2a3c4b5e6l7l8s9p0a1m2.3n4e5t6
wrote in message news:a7LOc.2758$4I5.1476@newssvr27.news.prodigy.com...

And somewhere around the time of 07/29/2004 23:34, the world stopped and
listened as Section 8 contributed the following to humanity:


The transponder unit inside a BMW uses a series of pulses sent to
Engine Computer for verification. I like to record this signal and play

them

back on my desktop PC's music program. I've lost this key once and it
cost $200US to get another. I will use a hand held tape recorder to
record the series of pulses. How do I convert a data (electrical, 3vdc)
signal into a usable sound waves using a microphone?

Thanks


I can point you to several places where you can get info on building
one, but the problem is that sound has nothing to do with it. It's an
RF signal that the transmitter sends to the vehicle. Each one sends a
digitally encoded signal to the car, similar to a garage door opener.
The signal is unique to the vehicle and cannot be played back,
considering that some of these rotate frequencies and codes to help
prevent theft.

Your best bet is to drop the US$200.00 and get another one.

--
Daniel Rudy

Email address has been encoded to reduce spam.
Remove all numbers, then remove invalid, email, no, and spam to reply.
Click to expand...

--
Daniel Rudy

Email address has been encoded to reduce spam.
Remove all numbers, then remove invalid, email, no, and spam to reply.
 
On Sun, 01 Aug 2004 22:58:15 GMT, Daniel Rudy
<i0n1v2a3l4i5d6d7c8r9u0d1y2e3m4a5i6l7@n0o1p2a3c4b5e6l7l8s9p0a1m2.3n4e5t6>
wrote:

And somewhere around the time of 07/31/2004 05:07, the world stopped and
listened as Art contributed the following to humanity:

My adage is if he can afford the flippin BMW he can afford to purchase the
correct item at the dealer.

Yeah, I have to agree with that myself.
Click to expand...
Hmm... Makes me wonder if he even actually owns that BMW... <g>

<snip>
 
And somewhere around the time of 08/01/2004 18:02, the world stopped and
listened as Herbert West contributed the following to humanity:

On Sun, 01 Aug 2004 22:58:15 GMT, Daniel Rudy
i0n1v2a3l4i5d6d7c8r9u0d1y2e3m4a5i6l7@n0o1p2a3c4b5e6l7l8s9p0a1m2.3n4e5t6
wrote:


And somewhere around the time of 07/31/2004 05:07, the world stopped and
listened as Art contributed the following to humanity:


My adage is if he can afford the flippin BMW he can afford to purchase the
correct item at the dealer.

Yeah, I have to agree with that myself.


Hmm... Makes me wonder if he even actually owns that BMW... <g

snip
Click to expand...
Now that you mention it, considering that he wanted to 'playback' the
codes kinda makes me think he might be looking to steal one. But, what
do I know.

--
Daniel Rudy

Email address has been encoded to reduce spam.
Remove all numbers, then remove invalid, email, no, and spam to reply.
 
Danny: Do you own a BMW and lost the access key?? Duh: LOL
"Daniel Rudy"
<i0n1v2a3l4i5d6d7c8r9u0d1y2e3m4a5i6l7@n0o1p2a3c4b5e6l7l8s9p0a1m2.3n4e5t6>
wrote in message news:cyoPc.102815$M8.80973@newssvr29.news.prodigy.com...
And somewhere around the time of 08/01/2004 18:02, the world stopped and
listened as Herbert West contributed the following to humanity:

On Sun, 01 Aug 2004 22:58:15 GMT, Daniel Rudy

i0n1v2a3l4i5d6d7c8r9u0d1y2e3m4a5i6l7@n0o1p2a3c4b5e6l7l8s9p0a1m2.3n4e5t6
wrote:


And somewhere around the time of 07/31/2004 05:07, the world stopped and
listened as Art contributed the following to humanity:


My adage is if he can afford the flippin BMW he can afford to purchase
the
correct item at the dealer.

Yeah, I have to agree with that myself.


Hmm... Makes me wonder if he even actually owns that BMW... <g

snip



Now that you mention it, considering that he wanted to 'playback' the
codes kinda makes me think he might be looking to steal one. But, what
do I know.

--
Daniel Rudy

Email address has been encoded to reduce spam.
Remove all numbers, then remove invalid, email, no, and spam to reply.
Click to expand...
 
On Fri, 30 Jul 2004, Section 8 wrote:

The transponder unit inside a BMW uses a series of pulses sent to
Engine Computer for verification. I like to record this signal and play them
back on my desktop PC's music program. I've lost this key once and it
cost $200US to get another. I will use a hand held tape recorder to
record the series of pulses. How do I convert a data (electrical, 3vdc)
signal into a usable sound waves using a microphone?
Click to expand...
You'll need to raise the volume on the transponder to 11 and push the
unlock button really hard to get the microphone to pick it up.

Dave
 
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