1999 BMW 540i check engine

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Instrument cluster
Instrument cluster uses large easy-to-read analog instru-
ments and is removable as a unit without removing the dash-
board. On-board computer and Check Control functions are
integrated into the instrument cluster displays.
Service Interval Display
Service Interval Display calculates vehicle service needs
based on current driving patterns, and indicates to the driver
when the car requires
service
On-board navigation
An integrated on-board navigation system, based on Global
Positioning System (GPS) technology, is optionally available
on
E39 cars. When installed, a multifunction monitor is includ-
ed in the center of the dash above the radio. in addition to dis-
playing navigation system information, this monitor accesses
On-Board Computerfunctions, audiosystem controls, mobile
phone dialling and memory, and automatic ventilation.
Park Distance Control (PDC)
Park Distance Control (PDC) is an optional system which
uses ultrasonic sensors in the rear bumper trim to warn the
driver of approaching too close to obstacles when parlting.
Central body electronics
E39 vehicles are equipped with an integrated complex of
electronic modules connected mostly via K-Bus. This system,
called central body electronics (ZKE
Ill), is primarily con-
trolled by the general module (GM
Ill). An overview of ZKE Ill
functions is found in 600 Electrical System-General. Details
of ZKE
Ill functioning is in the following repair groups:
- 512 Door Windows
* 515 Central Locking and Aniti-Theft
520 Seats
a 540 Sunroof
611 Wipers and Washers
620 Instruments

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Fenders, Engine ~ood/
Hood, removing and installing
With hood open:
Remove hood wiring harness mounting clip
(A)
Disconnect electrical harness connector (B).
Unplug windshield washer hose (C).
WARNING-
The hood is heavy Before removing the hoodsupports, be
sure to have an assistant help
support the hood.
Mark position of hinge plates.
With the help of a assistant, support hood and remove retain-
ing clips
(A) on upper end of pressurized lifting struts. Pull
struts off hood.
Loosen upper hinge bolts
(B)
Remove lower hinge bolts (C). Lift hood off carefully.
Installation is reverse of removal.
* Repair any paint damage and paint any exposed metal
Check hood alignment. See
Hood, aligning.
NOTE-
The hood was fitted and attached to an unfinished body at
the factory Unfinished
sun'aces exposed by this procedure
must be touched up with paint,

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Fenders, Engine ~oodl
Adjusting detent buffers for hood:
Raise hood.
* Shape pieces of rubber (butyl) tape into two IOmm col-
umns and place on buffers
(A).
* Close hood.
Measure dimension of the compressed rubber tape.
Using measurement dimension, adjust detent buffer
(A)
Hood should be under a slight preload. (+0.5 mm).
Fellow the same procedure on the front buffers
(B).
- After adjustment have been made, check that hood lid is flush
against detent buffers and
if necessary repeat the adjust-
ment.
CAUTION-
To avoid excessive wind noise, the hood must not protrude
beyond the front side panels.

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General ........................... .41 1.2 Door hinge adjustment ................ 41 1-5
Door hinge assembly
.................. 41 1-6 Doors ............................. 411-2
Front or rear door. removing
Door Panels ....................... 41 1-7
and installing ....................... .41 1.2 Door trim panel. removing and installing ... 41 1-7
Door check. replacing
................. .41 1.4 Sill trim panels ...................... 41 1-1 0

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411-3
Doors
4 Pull up on locking clip and remove connector.
4 With door fully open, unscrew pin bolts (arrow) from top and
bottom hinges.
Disconnect door
check by squeezing mounting pin tabs
(arrow) and driving pin up.
Remove door by lifting up off lower hinge halves.
CAUJION-
Be careful not to damage door or otherpainted body surfac-
es.
Make sure no load is placed on wirinq harness.
Installation is reverse of removal. Keep in mind the following:
Mount and align rear doors first, followed by the front
doors.
Align door so that panel gaps are equal on either side, see
specifications at the end of this procedure. If necessary,
adjust door hinges. See Door hinge adjustment.
* Adjust door striker so that trailing edge of front door is
slightly higher
(I mm 10.04 in.) than leading edge of rear
door. See
515 Central Locking and Anti-Theft.
Repair any paint damage and paint any exposed metal.

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Doors
~obr adjustment
Front fender to
4.25 mm i 0.25 mm (0.17 i- 0.01 in)
front door gap
Front
door to 4.5 mm i 0.25 mm (0.18 i 0.01 in)
rear door gap
Rear door to rear fender 4.0 mm i 0.25 mm (0.16 i 0.01 in)
Permissible deviation 1 .O mm (0.04 in)
from
~arallel
Tightening torque
Door hinge to door frame
20 Nm (15 it-lb)
Door check, replacing
WARNING -
E39 cars are fitted with side-impact airbags in the front doors
and optional side impact
airbags in the rear doors. When
servicing doors, always disconnect the negative
(-) battery
terminal. See
721 Airbag System (SRS) for cautions and
procedures relating to the
airbag system.
- Close door window completely.
- Disconnect negative (-) battery cable.
CAUTION-
Prior to disconnecting the batter)! read the battery discon-
nection cautions given in
001 General Cautions and
Warnings.
- Remove interior door panel. See Door trim panels, remov-
ing and installing.
- Where applicable, remove side-impact airbag from door. See
721 Airbag System (SRS). Remove door vapor barrier.
Disconnect door
check by
(arrow) and removing pin. squeezing I mounting
pin tabs

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... -
Doors
Remove rubber cover (A) and bolts (B) from door check lock-
plate on door.
Worlting inside door, remove door check assembly
Installation is reverse of removal.
Lubricate door check before installing.
- If removed, use new mounting bolts when reinstalling side-
impact airbag to door.
Tightening torque
Door
check to door frame 24 Nm (16 it-lb)
Door hinge adjustment
If the installed door is uneven or out of parallel, spacers can
be used to correct its position. Spacers are placed behind the
hinge and are available in two different thicltnesses
(0.5 mm
and 1.0 mm).
- Front and rear door adjustment procedure is similar.
Tightening torque Door hinge to door
frame 20 Nrn (15 ft-lb)

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.
1 Doors
Door hinge assembly
1. Door
2. Spacer ring
3. Upper hinge
4. Hex bolt
5. Spacer ring
6. Lower hinge
7. Door check gasket
8. Doorcheck
9. Pin
10. Torx bolt
11. Gasket
12. Cover