Operation, maintenance -> OBD interface socket for Your BMW M3 4 Door Third Generation (2000-2006)

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OBD interface socket  
The Onboard Diagnostic (OBD) inter-  
face socket is located on the left of the  
driver's side at the bottom of the instru-  
ment panel and under a cover. The  
cover has the letters OBD on it.  
The purpose of the OBD system is to  
assure proper emission-control system  
operation for the vehicle's lifetime by  
monitoring emission-related compo-  
nents and systems for deterioration and  
malfunction.  
An illuminated indicator informs  
you of the need for service, not  
that you need to stop the vehi-  
cle. However, the systems should be  
checked by your BMW center at the  
earliest possible opportunity.  
 
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