Operation, care and maintenance -> OBD interface socket for your BMW 5 Series 1995-2003

OBD interface socket  
153n  
When the filler cap is not properly  
An illuminated indicator informs  
you of the need for service, not  
of the need to stop the vehicle.  
However, the systems should be  
checked by your BMW center at the  
earliest possible opportunity.  
tightened, the OBD system can  
detect the vapor leak and the indicator  
will light up. If the filler cap is subse-  
quently tightened, the indicator should  
go out within a few days.<  
Under certain conditions, the indicator  
will blink or flash. This indicates a rather  
severe level of engine misfire. When  
this occurs, you should reduce speed  
and consult the nearest BMW center as  
soon as possible. Severe engine misfire  
over only a short period of time can  
seriously damage emission control  
components, especially the catalytic  
converter.  
Access to the interface socket for the  
On-Board-Diagnostics (OBD): lift the  
cover (arrow) next to the steering  
column.  
Warning lamp: Service Engine  
Soon for Canadian models  
The purpose of the OBD (Onboard  
Diagnostic) system is to assure proper  
emission control system operation for  
the vehicle's lifetime by monitoring  
emission-related components and  
systems for deterioration and malfunc-  
tion.  
 
154n