V40 Key: Where is the transponder located?

[coffeejunky]

Originally Posted by zoidberg

Sorted it, had to use my old phone with the Torque pro app on it as it wont work with my new phone !! Said it was a crank sensor'A' circuit fault, all clear and no lights on dash again....... yippee,lol
Regarding the guy about the keys, does he supply a chip with them that you have to get coded or are they already done ??

The guy above will only be able to supply a key which you need to use with your old transponder.
Only Volvo can code the car to the new key transponder. You can buy the transponders (Which are ID4M) either in bulk off eBay or from here with a key. BUT you need a friendly Volvo dealer who will be willing to program add the new key to your car... how much this will cost I have heard from £20 to £90, with some Volvo dealers refusing entirely.
The other option is gluing the transponder next to the ignition ring and using an 'empty' key. There is a very minor security risk but this allows you to have as many keys as you like.