I just bought my '03 G coupe 2 days ago. The previous owner only gave me one key because his ex had lost the others. Does anyone know how much will the dealer ask for the full set? Is there a way to change the electronic signal so the old ones get inactivated?

 

I don't know the cost but yes than can reset the chips in the keys.

 

The keys are not cheap, about $100 per, but worth having a spare. Don't forget the valet and wallet key.
The dealer can reprogram existing keys too, so that previous keys are no good.

<font color=red>GSM</font color=red>
<font color=red>GSM</font color=red>
<font color=black>Silverstone Coupe</font color=black>

 

Good to know. Thanks everyone!