When I needed a wheel lock for the Jetta I had bought. Those plastic lug bolt covers hide the wheel lock, the dealer would not sell the key, something about selling keys defeating the purpose of the locks. People could buy the keys at the dealers and steal wheels all day long (yea right).
I did not want wheel locks on the car anyway, and the lug bolts are round on the outside and recessed into the wheel, and I could not fit a bolt extractor like I had done on other wheels. So the dealer had a "deal", for $40 they would replace the lug bolts with regular bolts. Since the lug bolts from the dealer where like $5 each anyway, I had them do that, took about 1/2 hour for them to fit me in.