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Home >> BMW >> 1988 >> 535is Standard >> Repair and Diagnosis >> Engine Performance >> Adjustment >> Tune-Up - 6-CYL >> Service Intervals >> Service Indicator Light >> System Operation
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System Operation

  1. A service light will come on to indicate that service is required. The number of Green Light Emitting Diodes (LEDs) becomes less to indicate that the next service is due shortly. Green LEDs go out when engine is started.
  2. The Yellow LED and the "OIL SERVICE" or "INSPECTION" warning light come on to indicate that this service is due. A Red LED comes on to indicate that service interval has been exceeded. Service vehicle and reset indicator light.