2004 BMW 6 SERIES CONVERTIBLE spark plugs

Maintenance System
The BMW Maintenance System has been
devised with the following objectives: to
maximize vehicle safety, reliability, and resale
value by minimizing breakdowns resulting
from wear, and minimizing cost and inconven-
ience by computing maintenance intervals
based upon the specific manner in which
each individual vehicle is driven.
Maintenance intervals on motor vehicles have
conventionally been specified based upon
accumulated mileage. However, driving condi-
tions have a major influence on routine
maintenance requirements; distance traveled
is only one of the significant factors. A vehicle
driven for 50,000 miles of short trips in the
city with numerous cold starts, prolonged
periods of idling, stop-and-go driving, and
high engine speeds during acceleration
requires more frequent maintenance intervals
than a vehicle driven for 50,000 miles for long
distances at low engine speeds primarily at
operating temperature.
The advanced technologies at BMW have led
to the development of the unique BMW
Condition Based Service System which
computes the actual optimum maintenance
requirements based not only upon the
accumulated mileage, but taking into account
important factors such as high or low engine
speeds, short or long trip driving, and condi-
tion of the engine oil and brake pads.
The BMWMaintenance System
Condition Based Service CBS
CBS is a development of the Service Interval
Indicator System. Sensors and sophisticated
algorithms take even more detailed account
of the various conditions of vehicle use.
The remaining times for selected mainte-
nance tasks as well as any legally prescribed
dates are displayed to you individually:
Engine oil
Brakes – front and rear separately
Microfilter
Brake fluid
Spark plugs
Vehicle check
Required State Inspection(s)
CBS thus determines the current and future
maintenance requirements. This data can
also be read from the vehicle key by your
BMW Service Advisor and used to propose
the optimum scope of maintenance.
Have maintenance and repair work performed
by your BMW center. Make sure that the
maintenance work is stamped in this Service
and Warranty Information Statement. These
entries are the evidence of regular mainte-
nance of your vehicle and a requirement for
warranty claims.
2

Vehicle Check
Maintenance work (continued)
• Brake system connections and lines: check
for leaks, damage and correct positioning
• Underbody, incl. all visible parts (i.e. trans-
mission, rear axle, fuel lines, exhaust
system), check for damage, leaks and
corrosion
• Steering components: check for clearance,
leaks, damage and wear
• Final Inspection: Road test with check of
– Brakes
– Steering
– Shock absorbers
– Transmission
Brake fluid
Maintenance work
• Replace brake fluid
Spark plugs
Maintenance work
• Replace spark plugs at intervals of 100,000
miles
Automatic Transmission
Maintenance work
• Replace ATF at intervals of 100,000
7

8
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Evidence of maintenance work

9
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature

10
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature

11
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature

12
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature

13
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature
Engine Oil
yes no
Vehicle check
Front BrakeBrake fluid
Rear Brake
Microfilter
State inspection(s)
Air cleaner element
Spark plugs
yes no
Distance reading
Date, stamp and signature