What does service A include on Mercedes Benz CLK 320 2003 model?

They are glorified oil changes... (A at $300+ and B at $600+) Here ya go: MERCEDES A SERVICE CLK320 2003 * Inspect and record tread depth, and correct tire pressure * Rotate tires * Engine oil change and oil filter replacement using Mobil 1 synthetic oil * Lubrication service (hood hinges, lock cylinders, striker plates, sun roof tracks and top off all fluids) * Cooling system inspection (antifreeze protection level, hoses and clamps) * Brake inspection (check of pad thickness and condition of discs, fluids and lines) * Inspect heating and ventilation dust filter, replace if needed. * Function check (warning lamps, headlights, exterior lights, seat belts, windshield wiper and washer) * Inspect and lubricate throttle linkage * Check and clean air filter * Reset flexible service system counter   Resetting Service A:

Insert the key to position 2. Using thr multifunction menu button on the left of the steering wheel, scroll to the ambient temperature screen. Now using the up arrow button scroll to the next service due screen(wrench symbol). Press and hold the "reset button for 5 seconds until says service reset. Then press reset for three seconds. You are done.

    MERCEDES B SERVICE CLK320 2003 * Inspect windshield wiper inserts and service windshield washer system * Wheel Balance, inspect and rotate tires, record tread depth, and correct tire pressure. * Engine oil change and oil filter replacement (using Mobil 1 synthetic oil) * Lubrication service (hood hinges, lock cylinders, striker plates, sun roof tracks and top off all fluids) * Cooling system inspection (antifreeze protection level, hoses and clamps) * Brake inspection (check of pad thickness and condition of discs, fluids and lines) * Inspect heating and ventilation dust filter, replace if needed. * Function check (warning lamps, headlights, exterior lights, seat belts, windshield wiper and washer) * Inspect and lubricate throttle linkage * Check and clean air filter * Reset flexible service system counter * Inspect front axle ball joints; check steering play and power steering clutch; and rear differential levels * Inspect Poly V-Belt for condition * Inspect starting and charging system and service battery * Inspect climate control refrigerant * Reset service system counter * Reset flexible service system counter

Resetting Service B:

Insert the key to position 2. Using thr multifunction menu button on the left of the steering wheel, scroll to the ambient temperature screen. Now using the up arrow button scroll to the next service due screen(wrench symbol). Press and hold the "reset button for 5 seconds until says service reset. Then press reset for three seconds. You are done.