2002 Acura MDX Audio system needs a code

Time to visit the dealer. Code systems are designed to make them money but a few will find the code for you for free if you bought the car from them or are a regular customer. They will need the serial number from the radio. If they have to pull it out to find it, expect a bill. Be grateful you don't have a Volkswagen. If YOU don't know the code, you buy a new radio.