Jetta Sedan V6-2.8L (BDF) (2003)
Emissions Maintenance Light: Description and Operation
Significance of Malfunction Indicator Lamp (MIL) for exhaust emissions
If the engine control module detects a malfunction it switches on the Malfunction Indicator Lamp (MIL).
Location MIL
Note: The MIL can switch on in the continuous or flashing mode. Check the DTC memory in every case:
Refer to Powertrain Management
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Flashing mode: There is a malfunction present which can damage the catalytic converter when continuing to drive at this power output. If this
occurs, continue driving only at reduced output.
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Continuous mode: There is a malfunction present which causes the emissions to deteriorate. Check the Motronic engine control module and/or
transmission control module.
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Check the DTC memory if the customer has a complaint or if there is a driving characteristic problem and the MIL does not light up. This is
because malfunctions can be stored which will not switch on the MIL immediately.
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Check function of Malfunction Indicator Lamp (MIL):
Refer to Powertrain Management