2005 Sienna Transponder Key

"Ray O" wrote in message

>
> wrote in message
>
>>I have one master (black) transponder key for a 2005 Sienna and would
>> like another key. Local locksmith's want $80 to make the key and
>> program it. I've seen posts that say "self-programming" may be
>> possible in a 2005 Sienna and others that say it requires a special
>> tool. Is it possible to buy a key from eBay and program it myself?
>
> There are 2 parts to the key, plus the keyless entry function if the
> vehicle is so equipped.
>
> The first part is the physical key with teeth that fit into the lock.
>
> The second part of the key is the chip - transponder chip in the key.
> Without the correct chip-transponder, the door locks and ignition switches
> will turn but the engine will not start.
>
> It is possible to program the keyless entry functions of the key yourself,
> i.e., lock, unlock, etc. if you have a working key.
>
> Programming the transponder chip requires special equipment.
>
>

What Ray said.

My daughter has a BMW that has a transponder built into the key, and for
whatever reason the transponder died while she was out somewhere and the car
would not start. It would not even turn over. The door would lock and
unlock, the ignition would turn, but no effort to start could be summoned.
The tow truck brought her car home. I screwed around with it for 20 minutes,
or so, and tried a different key. Viola! She had to buy a new key -- the key
I used did not support the keyless entry system, no buttons.

The key I used also did not have a chip inside, as far as I can tell. That
is, there is no means of installing a battery and no buttons or anything
like that. I suppose the chip does not need a power supply that requires
replacement every so often.

The chip works much the same as the tags they put on stuff at the store so
the alarms sound if you get past a cash register without paying. The car has
to be taught to recognize the new chip as a friendly one so that the
ignition bypass circuits will allow the car to start.
 >> Stay informed about: 2005 Sienna Transponder Key 

"Jeff Strickland" wrote in message

>
> "Ray O" wrote in message
>
>>
>> wrote in message
>>
>>>I have one master (black) transponder key for a 2005 Sienna and would
>>> like another key. Local locksmith's want $80 to make the key and
>>> program it. I've seen posts that say "self-programming" may be
>>> possible in a 2005 Sienna and others that say it requires a special
>>> tool. Is it possible to buy a key from eBay and program it myself?
>>
>> There are 2 parts to the key, plus the keyless entry function if the
>> vehicle is so equipped.
>>
>> The first part is the physical key with teeth that fit into the lock.
>>
>> The second part of the key is the chip - transponder chip in the key.
>> Without the correct chip-transponder, the door locks and ignition
>> switches will turn but the engine will not start.
>>
>> It is possible to program the keyless entry functions of the key
>> yourself, i.e., lock, unlock, etc. if you have a working key.
>>
>> Programming the transponder chip requires special equipment.
>>
>>
>
> What Ray said.
>
> My daughter has a BMW that has a transponder built into the key, and for
> whatever reason the transponder died while she was out somewhere and the
> car would not start. It would not even turn over. The door would lock and
> unlock, the ignition would turn, but no effort to start could be summoned.
> The tow truck brought her car home. I screwed around with it for 20
> minutes, or so, and tried a different key. Viola! She had to buy a new
> key -- the key I used did not support the keyless entry system, no
> buttons.

I am pretty sure that all modern vehicles sold in the U.S. have a
transponder chip in the keys. The chips do not need a battery, but keys or
key fobs with keyless entry do require batteries.
--

Ray O
(correct punctuation to reply)
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"dbu'" wrote in message

> In article ,
> "Jeff Strickland" wrote:
>
>> "Ray O" wrote in message
>>
>> >
>> > wrote in message
>> >
>> >>I have one master (black) transponder key for a 2005 Sienna and would
>> >> like another key. Local locksmith's want $80 to make the key and
>> >> program it. I've seen posts that say "self-programming" may be
>> >> possible in a 2005 Sienna and others that say it requires a special
>> >> tool. Is it possible to buy a key from eBay and program it myself?
>> >
>> > There are 2 parts to the key, plus the keyless entry function if the
>> > vehicle is so equipped.
>> >
>> > The first part is the physical key with teeth that fit into the lock.
>> >
>> > The second part of the key is the chip - transponder chip in the key.
>> > Without the correct chip-transponder, the door locks and ignition
>> > switches
>> > will turn but the engine will not start.
>> >
>> > It is possible to program the keyless entry functions of the key
>> > yourself,
>> > i.e., lock, unlock, etc. if you have a working key.
>> >
>> > Programming the transponder chip requires special equipment.
>> >
>> >
>>
>> What Ray said.
>>
>> My daughter has a BMW that has a transponder built into the key, and for
>> whatever reason the transponder died while she was out somewhere and the
>> car
>> would not start. It would not even turn over. The door would lock and
>> unlock, the ignition would turn, but no effort to start could be
>> summoned.
>> The tow truck brought her car home. I screwed around with it for 20
>> minutes,
>> or so, and tried a different key. Viola! She had to buy a new key -- the
>> key
>> I used did not support the keyless entry system, no buttons.
>>
>> The key I used also did not have a chip inside, as far as I can tell.
>> That
>> is, there is no means of installing a battery and no buttons or anything
>> like that. I suppose the chip does not need a power supply that requires
>> replacement every so often.
>>
>> The chip works much the same as the tags they put on stuff at the store
>> so
>> the alarms sound if you get past a cash register without paying. The car
>> has
>> to be taught to recognize the new chip as a friendly one so that the
>> ignition bypass circuits will allow the car to start.
>
> The technology with this device is that the key, (chip), is actuated and
> powered by excitation from a radio frequency energy source. It is an
> old, proven, simple and clever technique which works. The USSR used it
> to spy on our embassy, back 40 years or so ago.
> --
>


What kinds of scenarios would make a key stop working, as in my daughter's
case. She drove the car somewhere and parked. On the next START cycle, it
would not start. We determined that the key was not talking to the car, but
I never figured out why it stopped. The other key for the car worked fine,
and the new key works fine, so the car is okay. The problem is clearly with
the key, what kinds of conditions would cause it to fail?
 >> Stay informed about: 2005 Sienna Transponder Key 

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 >> Stay informed about: 2005 Sienna Transponder Key 

> What kinds of scenarios would make a key stop working, as in my daughter's
> case. She drove the car somewhere and parked. On the next START cycle, it
> would not start. We determined that the key was not talking to the car,
> but I never figured out why it stopped. The other key for the car worked
> fine, and the new key works fine, so the car is okay. The problem is
> clearly with the key, what kinds of conditions would cause it to fail?

If the key works like the loss prevention devices. Could it be possible to
disable the Ignition Key by placing it on the cashier counter, where you
should not put your wallet on?
 >> Stay informed about: 2005 Sienna Transponder Key 

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wrote in message

> On Fri, 27 Mar 2009 15:41:05 -0500, "Ray O"
> wrote:
>
>>
>>"Jeff Strickland" wrote in message
>>
>>>
>>> "Ray O" wrote in message
>>>
>>>>
>>>> wrote in message
>>>>
>>>>>I have one master (black) transponder key for a 2005 Sienna and would
>>>>> like another key. Local locksmith's want $80 to make the key and
>>>>> program it. I've seen posts that say "self-programming" may be
>>>>> possible in a 2005 Sienna and others that say it requires a special
>>>>> tool. Is it possible to buy a key from eBay and program it myself?
>>>>
>>>> There are 2 parts to the key, plus the keyless entry function if the
>>>> vehicle is so equipped.
>>>>
>>>> The first part is the physical key with teeth that fit into the lock.
>>>>
>>>> The second part of the key is the chip - transponder chip in the key.
>>>> Without the correct chip-transponder, the door locks and ignition
>>>> switches will turn but the engine will not start.
>>>>
>>>> It is possible to program the keyless entry functions of the key
>>>> yourself, i.e., lock, unlock, etc. if you have a working key.
>>>>
>>>> Programming the transponder chip requires special equipment.
>>>>
>>>>
>>>
>>> What Ray said.
>>>
>>> My daughter has a BMW that has a transponder built into the key, and for
>>> whatever reason the transponder died while she was out somewhere and the
>>> car would not start. It would not even turn over. The door would lock
>>> and
>>> unlock, the ignition would turn, but no effort to start could be
>>> summoned.
>>> The tow truck brought her car home. I screwed around with it for 20
>>> minutes, or so, and tried a different key. Viola! She had to buy a new
>>> key -- the key I used did not support the keyless entry system, no
>>> buttons.
>>
>>I am pretty sure that all modern vehicles sold in the U.S. have a
>>transponder chip in the keys. The chips do not need a battery, but keys
>>or
>>key fobs with keyless entry do require batteries.
>
> My second key for a Sienna 06 is just a plan looking key with NO signs of
> ANY chip inserted. Are we sure that it has an imbedded key built in?
>
> My 'first' key looks the same and has a small black remote attached with a
> key ring. Are the two keys identical?
>
> m

Your owner's manual will describe how the chip works. The chip is embedded
in the plastic head of the key.
--

Ray O
(correct punctuation to reply)
 >> Stay informed about: 2005 Sienna Transponder Key 

"Ray O" wrote in message

>
> wrote in message
>
>> On Fri, 27 Mar 2009 15:41:05 -0500, "Ray O"
>> wrote:
>>
>>>
>>>"Jeff Strickland" wrote in message
>>>
>>>>
>>>> "Ray O" wrote in message
>>>>
>>>>>
>>>>> wrote in message
>>>>>
>>>>>>I have one master (black) transponder key for a 2005 Sienna and would
>>>>>> like another key. Local locksmith's want $80 to make the key and
>>>>>> program it. I've seen posts that say "self-programming" may be
>>>>>> possible in a 2005 Sienna and others that say it requires a special
>>>>>> tool. Is it possible to buy a key from eBay and program it myself?
>>>>>
>>>>> There are 2 parts to the key, plus the keyless entry function if the
>>>>> vehicle is so equipped.
>>>>>
>>>>> The first part is the physical key with teeth that fit into the lock.
>>>>>
>>>>> The second part of the key is the chip - transponder chip in the key.
>>>>> Without the correct chip-transponder, the door locks and ignition
>>>>> switches will turn but the engine will not start.
>>>>>
>>>>> It is possible to program the keyless entry functions of the key
>>>>> yourself, i.e., lock, unlock, etc. if you have a working key.
>>>>>
>>>>> Programming the transponder chip requires special equipment.
>>>>>
>>>>>
>>>>
>>>> What Ray said.
>>>>
>>>> My daughter has a BMW that has a transponder built into the key, and
>>>> for
>>>> whatever reason the transponder died while she was out somewhere and
>>>> the
>>>> car would not start. It would not even turn over. The door would lock
>>>> and
>>>> unlock, the ignition would turn, but no effort to start could be
>>>> summoned.
>>>> The tow truck brought her car home. I screwed around with it for 20
>>>> minutes, or so, and tried a different key. Viola! She had to buy a new
>>>> key -- the key I used did not support the keyless entry system, no
>>>> buttons.
>>>
>>>I am pretty sure that all modern vehicles sold in the U.S. have a
>>>transponder chip in the keys. The chips do not need a battery, but keys
>>>or
>>>key fobs with keyless entry do require batteries.
>>
>> My second key for a Sienna 06 is just a plan looking key with NO signs of
>> ANY chip inserted. Are we sure that it has an imbedded key built in?
>>
>> My 'first' key looks the same and has a small black remote attached with
>> a
>> key ring. Are the two keys identical?
>>
>> m
>
> Your owner's manual will describe how the chip works. The chip is
> embedded in the plastic head of the key.
> --
>


Any buttons that the key might hold are there to support the entry system.
The key that has no buttons has to be inserted into a lock to operate it, or
them if the locks are electrically linked together. Once the doors are
opened, the key is inserted into the ignition switch, and there is a ring
around the ignition that is able to read the chip imbedded into the head of
the key.

The idea is that if a bad guy gets into the car, he won't be able to drive
it away unless he has the correct key. He can't simply jimmy the lockset as
in years gone by.
 >> Stay informed about: 2005 Sienna Transponder Key 

This message is not archived
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wrote in message

> On Sat, 28 Mar 2009 15:12:12 -0500, "Ray O"
> wrote:
>
>>
>> wrote in message
>>
>>> On Fri, 27 Mar 2009 15:41:05 -0500, "Ray O"
>>> wrote:
>>>
>>>>
>>>>"Jeff Strickland" wrote in message
>>>>
>>>>>
>>>>> "Ray O" wrote in message
>>>>>
>>>>>>
>>>>>> wrote in message
>>>>>>
>>>>>>>I have one master (black) transponder key for a 2005 Sienna and would
>>>>>>> like another key. Local locksmith's want $80 to make the key and
>>>>>>> program it. I've seen posts that say "self-programming" may be
>>>>>>> possible in a 2005 Sienna and others that say it requires a special
>>>>>>> tool. Is it possible to buy a key from eBay and program it myself?
>>>>>>
>>>>>> There are 2 parts to the key, plus the keyless entry function if the
>>>>>> vehicle is so equipped.
>>>>>>
>>>>>> The first part is the physical key with teeth that fit into the lock.
>>>>>>
>>>>>> The second part of the key is the chip - transponder chip in the key.
>>>>>> Without the correct chip-transponder, the door locks and ignition
>>>>>> switches will turn but the engine will not start.
>>>>>>
>>>>>> It is possible to program the keyless entry functions of the key
>>>>>> yourself, i.e., lock, unlock, etc. if you have a working key.
>>>>>>
>>>>>> Programming the transponder chip requires special equipment.
>>>>>>
>>>>>>
>>>>>
>>>>> What Ray said.
>>>>>
>>>>> My daughter has a BMW that has a transponder built into the key, and
>>>>> for
>>>>> whatever reason the transponder died while she was out somewhere and
>>>>> the
>>>>> car would not start. It would not even turn over. The door would lock
>>>>> and
>>>>> unlock, the ignition would turn, but no effort to start could be
>>>>> summoned.
>>>>> The tow truck brought her car home. I screwed around with it for 20
>>>>> minutes, or so, and tried a different key. Viola! She had to buy a new
>>>>> key -- the key I used did not support the keyless entry system, no
>>>>> buttons.
>>>>
>>>>I am pretty sure that all modern vehicles sold in the U.S. have a
>>>>transponder chip in the keys. The chips do not need a battery, but keys
>>>>or
>>>>key fobs with keyless entry do require batteries.
>>>
>>> My second key for a Sienna 06 is just a plan looking key with NO signs
>>> of
>>> ANY chip inserted. Are we sure that it has an imbedded key built in?
>>>
>>> My 'first' key looks the same and has a small black remote attached with
>>> a
>>> key ring. Are the two keys identical?
>>>
>>> m
>>
>>Your owner's manual will describe how the chip works. The chip is
>>embedded
>>in the plastic head of the key.
>
> Checked all that - I have the "without engine immobilizer" system. Only
> one of the two master keys has a plastic head. The second master and the
> one sub key appear to be pure metal. Are they all without chips - not
> sure after reading about 15 pages?
>
> How long is the CR2032 battery in the remote generally good for?
>
> m


The battery is available at the drug store -- Rite Aid, Wallgreens, the
watch department at Target, and so on. It is the same as is commonly used as
the battery in your computer to keep the time and date, and other kinds of
information, while the computer is off.

The chip, if equipped, requires a plastic head on the key.
 >> Stay informed about: 2005 Sienna Transponder Key