BMW X5 Technical Information download pdf (Page 5)

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 inconvenience by computing maintenance

intervals based upon the specific manner in which

each individual vehicle is driven.

Maintenance intervals on motor vehicles have con-

ventionally been specified based upon accumu-

lated mileage. However, the type of driving condi-

tions has 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 re-

quires more frequent maintenance intervals than a

vehicle driven for 50,000 miles for long distances at

low engine speeds primarily at operating tempera-

ture.

The advanced technologies at BMW have led to the

development of the unique BMW Service Interval

Indicator System which computes the actual opti-

mum maintenance requirements based not only

upon the accumulated mileage, but taking into ac-

count important factors such as engine coolant tem-

peratures, high or low engine speeds, short or long

trip driving, and number of vehicle starts. The main-

tenance interval may therefore be maximized with

considerable savings to owners of vehicles sub-

jected to light duty.

(Typical Display) 32 88 02 30

The

Service Indicator

consists

of five green,

one yellow and one red Iight-emitting-diodes

(LEDs) and the inscriptions “OIL SERVICE” and

“INSPECTION”.

Whenever the ignition is switched on, up to

five green LEDs

will light up, depending on

the amount of use the vehicle has had since

the last maintenance service and your driving

style. As the number of illuminated green LEDs

decreases, this is an indication that the next

service is almost due and helps you to make

the necessary arrangements on a timely basis.

The green LEDs disappear when the engine

is started.

Notification that maintenance is required is indi-

cated with the illumination of the yellow LED

and accompanying inscription. These will remain

illuminated with the ignition on.

If the maintenance interval has been exceeded,

the red LED

will light up in addition to the yellow

one to remind you of the urgent need for servic-

ing. In the interests of road safety and reliability,

you should avoid driving your BMW when

the red LED signal is showing,

and have the

essential maintenance work performed without

delay.

After each maintenance is performed the ser-

vice indicator is reset in order to compute the

next service interval.

The green LEDs which then light up with the

ignition show you the interval before the next

maintenance is due.

If the service indicator displays an illogical read-

ing, for instance the green and red LEDs at the

same time, or if there is no display, consult an

authorized BMW SAV center.

If the speedometer, tachometer or coolant tem-

perature gauge should develop a fault, the service

indicator will probably cease to operate correctly

as well, since it depends on correct speed, dis-

tance and temperature readings. The fault must

be located and rectified by an authorized BMW

SAV center.

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