What is the meaning of A service?

it's in your owners manual>>A Service,B Service,C Service....make sure you use the correct oil..someone on here a while back had a problem with their engine and the dealer took a sample of their oil and it was out of their spec..cost the customer $30,000.00 for an engine! you might want to read up on your owners manual,etc.. The A Service first visit is at approximately 10,000 miles or 1 year. The exact time is determined by the vehicle's Flexible Service System. Then it is approximately every 20,000 miles or 2 years. This is for model year 2009 and newer. Services Performed: Synthetic Motor Oil Replacement Oil Filter Replacement All Fluid Level Checks & Corrections Are Dependent On Factory-Recommended Service Intervals For Your Vehicle's Year & Model Tire Inflation Check & Correction Brake Component Inspection Reset Maintenance Counter