BMW M3 convertible Technical Information download pdf (Page 6)

䉯 Oil changes performed outside the recom-

mended maintenance intervals as indicated

by the Service Interval Display

Maintenance Upgrade Option

Please contact your authorized BMW center for

information and availability on the optional Main-

tenance Program Upgrade for coverage up to

6 years and 100,000 miles.

Intervals

Time intervals should be followed using the

maintenance interval as indicated by the BMW

Service Interval Display.

Maintenance intervals on motor vehicles have

conventionally been specified based upon accu-

mulated mileage. However, driving conditions

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 fre-

quent 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 (CBS) 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 condition of the engine oil and

brake pads.

Condition Based Service (CBS)

CBS is a further development of the Service

Interval Indicator System. Sensors and sophisti-

cated algorithms take even more detailed

account of the various conditions of vehicle use.

The remaining times for selected maintenance

tasks as well as any legally prescribed dates are

displayed to you individually:

䉯 Engine oil

䉯 Brakes - front and rear separately

䉯 Brake fluid

䉯 Vehicle check

䉯 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 Ser-

vice Advisor and used to propose the optimum

scope of maintenance.

Disconnecting the battery during periods

of long-term storage will interrupt the

calculation of time-based services. Have all

items requiring time-based maintenance, such

as brake fluid and possibly also the engine oil

and microfilter, brought up to date by your BMW

center. Also see the section on battery care on

page 17 of this statement.

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