Socket for on-board diagnosis obd, Maintenance – BMW M3 Sedan 2008 User Manual

Page 116

Maintenance

114

Socket for On-Board

Diagnosis OBD

Primary components that make up exhaust
emissions can be checked by a device via the
OBD socket.
This socket is located on the driver's side to the
left, on the bottom of the instrument panel
underneath a cover.

Exhaust emission values

The warning lamp lights up:
The exhaust emission values have
worsened. Have the car checked as

soon as possible.

Canadian models display this warning
lamp.

The lamp flashes under certain conditions. This
indicates excessive misfiring in the engine. If
this happens, you should reduce your speed
and visit your nearest BMW center as soon as
possible. Severe engine misfiring can quickly
lead to serious damage of emissions-related
components, especially the catalytic converter.

The warning lamp comes on if the gas
cap is not properly tightened and the
OBD system assumes that fuel vapor

is escaping. If the gas cap is then tightened, the
warning lamp should go out within a few days.

Event data recorders

Your vehicle may be equipped with one or sev-
eral measuring or diagnostic modules or a
device for recording or sending certain vehicle
data or information. In addition, if you have
signed a service contract for BMW Assist, cer-

tain vehicle data may be transmitted or
recorded in order to facilitate the corresponding
services.