...ok, I wasn't sure on this (in the past) ...and also thought that there are some additional/special parts needed or have to be changed, but...nope...
...so...yes, it is possible to "activate" the remote start on a 2005/2006 european market export STS...and it is fairly easy to do on an export with "remote start delete"...
...well...I've "done" it to my 2006 export STS...
...all you need is the front cover of an us/canadian 5-button fob, the 5-button-rubber inlay...and the rubbers fragil plastic inlay with the 5 little charcoal contacts...
(...so, just buy a used domestic-market-us/canadian 5-button fob and disassemble it for the needed parts...
)
...if you open up your 4-button export fob you will see a little ("EU"-marked) circuit board, it has the same layout like the domestic market 5-button fob...
(the only difference is, that it is marked "NA" (North America) - and it's working with a 315 MHz frequency)
...the european exports use the 433 MHz frequency band...(so, a domestic fob doesn't work on a euro specs export STS...and...the RCDLR is also market/frequency specific)
...you will see that the little export fob circuit board can also take (and is able to work with) the 5-button parts...
...btw, again, there is no need to change the cars RCDLR (remote controle door lock receiver) from the export-433 MHz unit to a domestic 315 MHz part...the 05/06 export RCDLR is already programmed from factory and is capable for remote start on 2005/2006 exports...it's just not "useable" with our export 4-button fob with the missing fifth button...that's all...
...one little restriction...the (...or my) export nav still doesn't have the menu item for remote start...it's not selectable...maybe there is a little Tech II work/programming needed...I haven't ask my dealership yet...
...so...atm I'm not able to "program" the remote start ( "on" or "off" ) and remote start options via nav in the personal settings menu...but "remote start" is/was programmed "on" ...and two of the three remote start options are/were already programmed..."rear window defog" (at cold) and "climate control" are on...only "seat temp" is off...
...so...to cut a long story short...all I have done was buying a domestic market 5-button fob, swapped/changed the export fob circuit board in(to) the domestic fob case...ran to my export STS, done the remote start procedure (described in the us/canadian owner manual)...and the car started via remote...(no extra programming, no tech II)
...some details (pictures) :
(far left the 5-button fob) left the domestic circuit board, right export....they got the same layout...you also see the export 4-button rubber with the plastic inlay equipped with little charcoal contacts...to use the start button the 5-button fob parts are needed
...and here:
...so...yes, it is possible to "activate" the remote start on a 2005/2006 european market export STS...and it is fairly easy to do on an export with "remote start delete"...
...well...I've "done" it to my 2006 export STS...
...all you need is the front cover of an us/canadian 5-button fob, the 5-button-rubber inlay...and the rubbers fragil plastic inlay with the 5 little charcoal contacts...
(...so, just buy a used domestic-market-us/canadian 5-button fob and disassemble it for the needed parts...
...if you open up your 4-button export fob you will see a little ("EU"-marked) circuit board, it has the same layout like the domestic market 5-button fob...
(the only difference is, that it is marked "NA" (North America) - and it's working with a 315 MHz frequency)
...the european exports use the 433 MHz frequency band...(so, a domestic fob doesn't work on a euro specs export STS...and...the RCDLR is also market/frequency specific)
...you will see that the little export fob circuit board can also take (and is able to work with) the 5-button parts...
...btw, again, there is no need to change the cars RCDLR (remote controle door lock receiver) from the export-433 MHz unit to a domestic 315 MHz part...the 05/06 export RCDLR is already programmed from factory and is capable for remote start on 2005/2006 exports...it's just not "useable" with our export 4-button fob with the missing fifth button...that's all...
...one little restriction...the (...or my) export nav still doesn't have the menu item for remote start...it's not selectable...maybe there is a little Tech II work/programming needed...I haven't ask my dealership yet...
...so...atm I'm not able to "program" the remote start ( "on" or "off" ) and remote start options via nav in the personal settings menu...but "remote start" is/was programmed "on" ...and two of the three remote start options are/were already programmed..."rear window defog" (at cold) and "climate control" are on...only "seat temp" is off...
...so...to cut a long story short...all I have done was buying a domestic market 5-button fob, swapped/changed the export fob circuit board in(to) the domestic fob case...ran to my export STS, done the remote start procedure (described in the us/canadian owner manual)...and the car started via remote...(no extra programming, no tech II)
...some details (pictures) :
(far left the 5-button fob) left the domestic circuit board, right export....they got the same layout...you also see the export 4-button rubber with the plastic inlay equipped with little charcoal contacts...to use the start button the 5-button fob parts are needed

...and here:
