Bmw Service Indicator; Oil Service; Inspection I And Inspection Ii - BMW 1989-1995 525i Service Manual

020-2
MAINTENANCE PROGRAM
GENERAL
The information given in this repair group includes the rou-
tine checks and maintenance steps that are both requi red by
BMW under the terms of the vehicle warran ty protection and
recommended by BMW to ensure long and reliable vehicle
operation.
NOTE-
Aside from keeping your car in the best possible condi-
tion. proper maintenance plays
a
role
in
maintaining full
protection under BMW's new-car warranly coverage . If
in
doubt about the terms and conditions of your
car' s
warranty. an authorized BMW dealer should be able to
explain them.
BMW has taken a unique approach to establishing mainte -
nance intervals. BMW's Service Indicator System computes
maintenance intervals based not only on elapsed mileage. but
also on such inputs as engine speed , engine temperature,
number of starts, and lengths of trips. At the appropriate time,
the system indicates, through lights in the instrument cluster,
when the next routine maintenance is due.
NOTE-
BMW is constantly updating their recommended msin-
tenence procedures and requirements. The informa-
tion contained here is as accurate as possible at the
time of publication. If there is any doubt about what pro-
cedures apply to
a
specific model or model year. or
what intervals should be followed. remember that an
authorized BM W dealer has the latest information
on
factory-recommended maintenance.
BMW Service Indicator
The BMW Service Indicator notifies the driver when mainte-
nance is required. The service indicator consists of multiple
light emitting diodes (LEOs)- typically five green, one yellow ,
and one red- as well as OIL SERVICE and INSPECTION in-
dicators .
When the ignition is turned on, the green LEOs come on.
They go out when the engine is started . After the Service Indi-
cator is reset. all green LEOs will be illuminated with the key
on. As the car is driven in normal use, fewer and fewer green
LEOs will be illuminated before start-up, indicating that the
next maintenance interval is approaching.
When the car has accumu lated suHicient use to require the
next mainten ance interval, the yellow LEO will come on along
with either the OIL SERVICE indicator or the INSPECTION in-
dicator. These LEOs will stay on after the engine is started. If
maintenance service is delayed. the red LEO will also illumi-
nate as a reminder that maintena nce service is overdue.
An OIL SERVIC E interval will always be followed by an IN-
SPECTION interval, which will then be followed by an OIL
SERVICE interval. and so on.
GENERAL
00 11909
Fig. 1. Service indicator display in instrument panel.
Oil Service
The Oil Service indicator signals the need for the most basic
level of routine maintenance. BMW's required oil service spec-
ifies changing the engine lubricating oil and the engine oil filter
after the engine has been warmed up. BMW-recommended
additional maintenance for this service is listed in Table a.
NOTE-
• For reference. the BMW Oil Service requirements are
approximately equivalent to the maintenance that oth-
er European manufacturers specify at intervals with
a
maximum of every 7.500 miles or 6 months.
• Be sure to follow the instructions for resetting the Oil
Service indicator light. The Inspection indicator
can
be accidentally reset rendering its function inaccurate.
Inspection I and Inspection II
The Inspection indicator signals the need for more compre-
hensive maintenance and inspection. There are two sets of in-
spect ion requ irements, Inspection I and Inspection II. These
inspections alternate throughout a car's maintenance history.
If the last inspection interval was Inspection
I.
the next inspec-
tion interval (following an Oil Serv ice) will be Inspection II, the
next after that will be Inspection I. and so on.
Inspection I tasks are listed in Table b. Inspection II in-
cludes most of the tasks from Inspection I with additional In-
spection II tasks. A complete listing of Inspectio n II lasks are
listed in Table c.