2001 Mercedes Benz S430FACTORY OEM SERVICE PROCEDURE

Service Intervals & Specifications

Mercedes-Benz vehicles are equipped with a Flexible Service System (FSS). The FSS may also be referred to as Active Service System (ASSYST). The FSS determines vehicle service schedule based on vehicle usage and operating conditions. The FSS notifies vehicle owner by briefly displaying either one or two graphics of a wrench where vehicle mileage is displayed on instrument cluster. Vehicle displaying one wrench indicates service "A" (minor service) is due. Vehicle displaying two wrenches indicates service "B" (major service) is due.

NOTE: Manufacturer does not completely identify service "A" or "B" requirements.
REPLACEMENT INTERVALS

Component/Fluid Months Miles
Activated Charcoal Filter (For Cabin Air) (1) 24 30,000
Brake Fluid (2) 24 (3)
Engine Air Cleaner Element 48 50,000
Engine Coolant 36 (3)
Engine Oil & Filter (4) (4)
Fuel Filter 48 75,000
Spark Plugs
Except SLK230 (5) 100,000
SLK230 (6) (6)
(1) Replace when service "B" is indicated. If service "B" is not indicated and more than specified service interval has elapsed, replace filter.
(2) When service "A" or "B" is indicated only check fluid level and fill as necessary. Replace fluid at specified service interval.
(3) Mileage service interval does not apply.
(4) Service interval is determined by FSS.
(5) Month service interval does not apply.
(6) Spark plug service intervals are not available.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.