What is the difference between Service "A" or "B" ?

[Mercedes Benz of Florida]

I downloaded this from the MBUSA Owners website. I thought it was interesting.
If you notice, there are a lot of "CHECKS", rather than outright replacement.
I suppose most of this, if not all, you can readily do yourself, well before the
Mileage Due Date.

Be sure to update your Maintenance Log Book so you and others know
what services you performed.


A-Service — First visit at approximately 10,000 miles or 1 year, but determined by Flexible Service System; then every 20,000 miles or 2 years.

Interior
· Function check
· Check warning and indicator lamps, illumination and interior lighting
· Check windshield wiper, windshield washer system, headlamp cleaning system
· Reset maintenance service counter in instrument cluster

Wheels, brakes
· Check front brake pads for lining thickness
· Check tires for damage, condition
· Correct tire inflation pressure

Engine compartment
· Change engine oil and filter
· Fluid level checks of the following:
· Engine cooling system, antifreeze and corrosion protection
· Windshield washer system
· Brake system
· Check and correct battery fluid level
· Check battery condition
· Check catch, safety catch and hinges on engine hood for proper operation
Trunk
· Correct tire inflation pressure in spare tire
· Check battery condition

B-Service — First visit at approximately 20,000 miles or one year after previous service, but determined by Flexible Service System; then every 20,000 miles or 2 years.
Services performed:

Interior
· Function check
· Check warning and indicator lamps, illumination and interior lighting
· Check windshield wiper, windshield washer system, headlamp cleaning system
· Reset maintenance service counter in instrument cluster
· Replace dust filter (not applicable to SL-Class)
· Replace combination filter (SL-Class)
· Check parking brake (function test only)

Wheels, brakes
· Check condition/thickness of front and rear brake discs
· Check front and rear brake pads for lining thickness
· Check tires for damage and condition
· Measure tread depth, record in mm
· Correct tire inflation pressure

Underside of Vehicle
· Check for major components leakage
· Check for chafe marks, line routing, damaged components
· Check condition of front axle ball joints and rubber boots
· Check condition of mechanical steering components and rubber boots

Engine Compartment
· Check for major components leakage
· Check for chafe marks, line routing, damaged components
· Check and replenish all fluid levels
· Change engine oil and filter
· Check engine cooling system, antifreeze and corrosion protection
· Check brake system
· Check power steering
· Check Active Body Control
· Check windshield washer system
· Check and correct battery fluid level
· Check battery condition
· Check catch, safety catch and hinges on engine hood for proper operation
· Check condition of poly V-belt

Trunk
· Check battery condition
· Correct tire inflation pressure in spare tire