Obd interface socket – BMW M3 Coupe 2004 User Manual
Page 129
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129
If the indicator blinks or flashes, this 
indicates a high level of engine misfire. 
Reduce speed and contact your near-
est BMW center immediately. Severe 
engine misfiring for even a short period 
of time can seriously damage emission-
control system components, especially 
the catalytic converter.
SERVICE ENGINE SOON warn-
ing lamp for Canadian models.
If the gas cap is not on tight 
enough, the OBD system can 
detect leaking vapor and the indicator 
will light up. If the gas cap is then tight-
ened, the indicator will usually go out 
after a short period of time.
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OBD interface socket
Overview
Controls
Maintenance
Repairs
Data
Index
Online Edition for Part-No. 01 41 0 157 628 - © 09/03 BMW AG
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