Below is the list of Flexible Service Schedule (FSS) codes to give a description of what each one is.

Service 1 – Display in instrument cluster

• Check brake pads for thickness front/rear.
• Check condition of brake discs front/rear.

Service 2 – Every 60,000 Miles or 4 Years

Engine compartment:

• Replace air-cleaner insert.

Service 3 – Every 30,000 Miles or 2 Years

Engine Compartment

• Replace combination filter.
• Replace compressor poly-V-belt (E55 AMG only).

Service 4 – Every 30,000 Miles or 2 Years

Engine Compartment

• Replace dust filter.

Service 5 - Every 60.000 Miles or 5 Years

Engine Compartment

• Replace fuel filter.

Service 6 – Every 60,000 Miles or 5 Years

Engine Compartment

• Replace activated charcoal filter.

Service 7 – Every 100,000 Miles or 5 Years

Engine Compartment

• Replace spark plugs.

Service 8 – 150,000 Miles or 15 Years

Engine Compartment

• Replace coolant.

(WSC recommendation is to stick to the previous 4 year change intervals on coolant changes)

Service 9 – Every 2 years

Underside of Vehicle

• Chassis and load-bearing body components: Check for damage and corrosion.

Engine Compartment

• Replace brake fluid.

Service 10 – Every 5 Years

Passenger Compartment

• Sliding/pop-up roof: Clean slide rails and slide shoes.

Service 11 – Due at every service

Passenger Compartment

• Panorama sliding roof: Clean and lubricate guide mechanism.

Service 12

Engine Compartment

• Engine oil and filter change

Service 13

Engine Compartment

Check the following fluid levels, correct if necessary. If there is a loss of fluid,
determine cause and perform repair with separate work order.

• Brake system.
• Power steering.
• Windshield washer system.
• Check catch and safety catch and hinges on engine hood for proper operation.
• Check auxiliary battery condition.

Interior

Function check

• Warning/indicator lamps, illumination and interior lighting.
• Windshield wipers, washer system, headlamp cleaning system.
• Reset service indicator in instrument cluster.

Wheels and Brakes

• Inspect tires for damage and splits, measure thread depth.
• Check thickness of brake pads (remove 1 front wheel at service 13)
• Correct tire inflation pressure (incl. spare tire)

Trunk

• Check main battery condition

Service 14

Engine Compartment

Leakage – Major components

Check the following fluid levels, correct if necessary.
If there is a loss of fluid, determine cause and perform repair with separate work order

• Brake system.
• Power steering.
• Windshield washer system.
• Check catch and safety catch and hinges on engine hood for proper operation.
• Check auxiliary battery condition.
• Check for chafe marks, line routing, damaged components. In the event of
  leakage, determine cause and perform repairs on separate work order.

Interior

Function check

• Check parking brake (function test only)
• Warning/indicator lamps, illumination and interior lighting.
• Windshield wipers, washer system, headlamp cleaning system.
• Check safety belts and buckles for signs of external damage and function
• Reset service indicator in instrument cluster.

Wheels and Brakes

• Inspect tires for damage and splits, measure thread depth.
• Check thickness of brake pads (remove 1 front wheel at service 13)
• Correct tire inflation pressure (incl. spare tire)

Underside of Vehicle

• Check for chafe marks, line routing, damaged components. In the event of
  leakage, determine cause and perform repairs on separate work order.
• Check front axle joints for play, check rubber boots.
• Inspect condition of flexible discs.
• Inspect play of tie rod and drag link joints, inspect rubber boots.

Trunk

• Check main battery condition