BMW 1989-1995 525i Service Manual page 402

620-2
INSTRUMENTS
Table a.lnstrument Cluster Self-Test Diagnostics
(cars built Feb. 1989 and later)
Sell·test Information Typical sen-test readout
(exam ple from 1991 5251)
Internal BMW no.
8351832
Coding plug no. 24231
K number
7296
Chassis no.
BJ65571
Software version 0.95
Internal modification index 20
Instrument cluster, removing and installing
00 11803
Fig. 1. Instrument cluster retaining screws being removed.
00 '3 '78
Fig . 2. Pull up on locking lever (arrow) to release Instrument cluster
connector. Locking lever must be ,n up posiuon before mstan-
ing connector.
Removal of the instrument cluster requires removal of the
steering wheel and the SRS driver's side airbag (on cars so
equipped). Use extreme caution when removing Ihe airbag
unit from the steering wheel and be sure to follow the airbag
removal procedure as outlined in 721 Airbag System (SRS).
Improper handling of the airbag could cause serious injury.
WARNING-
The airbag is an explosive device and should be
treated with extreme caution. Improper handling 01
the airbag could cause serious inlury or death.
Slore the airbag w,th the horn pad lacmg up. /I
stored lacmg down.
scaaemet
deployment could
propel It violently into the air. causing inlury.
1.
Disconnect negative (-) ballery cable and cover termi-
nal with an insulating material.
2. On cars with driver's side airbag. remove airbag unit
from steering wheel. See 721 Airbag System (SRS).
Store the airbag unit in a safe place.
•
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0 " • • ••
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1' ' :: - -
- '1'- -
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.
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-
3. With front wheels pointed straight ahead . remove steer-
ing wheel. See 320 Steering and Wheel Alignment.
4.
Remove instrument cluster retaining screws . See Fig.
1.
5. Place a towel over steering column . Carefully tilt top of
cluster forward out of dash panel. Unlock and discon-
nect harness connectors from back of cluster. See Fig.
2.
6. Installation is the reverse of removal. Install the airbag
to the steering wheel as descr ibed in
721
Airbag Sys-
tem (SRS). Reconnect negat ive
{-I
battery cable last.
once all harness connectors have been reconnected.
INSTRUMENT CLUSTER
Instrument cluster, disassembli ng and
assembling
Individual instruments. illumination bulbs. and the LCD
module are available from an authorized BMW dealer as re-
placement parts.
A view of the instrument cluster components is shown in
Fig. 3.
1. Remove instrument cluster as described earlier.
2. Pull off odometer reset bullon and Check Control but-
ton from front of instrument cluster.