Have you sold your vehicle? To move your membership to a different vehicle (like your sweet new ride!), you’ll just need to go into your favorite local car wash and request it there. They'll update your account and issue you a new windshield sticker, and associate that sticker with your account. They will remove the old sticker from your account as well.
Luckily, there's no need to cancel your pass or buy a new one. You can just transfer your current pass to your new vehicle.