Long story but the key for our set has gone AWOL. Our local dealership are taking the pee with the price they want just to go through the 20 keys they have to see which one I need.
The box they come in should have an item number inside for replacement reasons but ours doesn't. As there are only 20 popular key shapes I wondered if anyone has the same shape key and could tell me the item number. This is the key, it actually looks quite triangular at first glance:
Thanks in advance if you manage to take a look.