2000 BMW 540i Release

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Maintenance
< Release mass air flow sensor clips (A).
Release upper air filter housing clips (B).
4 Lift air filter upper housing, and remove filter element.
NOTE-
V-8 engine air filter assembly shown in illustration. 6-cylinder
air filter assembly is similar but located at the left front of the
engine compartment.
- On installation, install O-ring for mass air flow sensor into
retaining clips in air filter upper housing.
- Replace air filter and upper air filter housing, and attach
upper air filter housing clips.
Cooling system, checking
Antifreeze raises the boiling point and lowers the freezing
~oint of the coolant. BMW recommends enaine coolantthat is
a 50 150 mixture of distilled water and ethGene glycol-based
antifreeze.
Routine cooling system maintenance consists of maintaining
the coolant level and inspecting hoses. Because the coolant's
anticorrosion and antifreeze additives gradually lose their ef-
fectiveness, replacement of the coolant every three years is
recommended.
CAUJION-
Use only BMWapprovedphosphate-free antifreeze when
filing the cooling system. Use of antifreeze containing
phosphates is harmful to the cooling system.
4 Float in radiator tank indicates coolant level. Inspect while
coolant is cold.
When upper mark on float is level with top of filler neck,
coolant is at minimum allowable level.
When lower mark on float is level with top of filler neck,
coolant is at maximum level.
Hose connections should be tight and dry. Coolant seepage
nnection indicates either that hose clamp is

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< 6-cylinder engine with hydraulic belt tensioners.
Use long-handled wrench to turn
A/C belt tensioner (A)
clockwise. Remove AfC belt.
* Similarly, turn main engine drive belt tensioner (B)
clockwise and remove belt.
< Some models have a dust cover over belt tensioner release
lug, which must be pried off prior to removing belt.
4 6-cylinder engine with spring-loaded belt tensioners.
Use long-handled wrench to turn
AfC belt tensioner
release lug
(A) clocltwise (against spring tension).
Remove
AfC belt.
Similarly, turn main engine drive belt tensioner lug
(B)
clocltwise and remove belt.

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020-26
Maintenance
NOTE-
The parking brake may lose some of its effectiveness if it is
not used frequently This is due to corrosion build-up on the
parking brake drum. To remove corrosion, apply the parking
brake just until it begins to grip, then pull the lever up one
more stop (click). Drive the car approximately 400 meters
(1,300
ft.) and release the brake. To recheck the adjustment
of the parking brake see
340 Brakes.
Clutch fluid, checking
In cars equipped with manual transmission and clutch, the hy-
draulic clutch and the brake system share the same reservoir
and the same bralte fluid. Clutch fluid level and brake fluid lev-
el are checked at the same time.
NOTE-
* See 340 Brakes for more information.
See
210 Clutch for information on the clutch and the
hydraulic clutch operating system.
Differential oil level, checking
The E39 differential is filled with lifetime oil that ordinarily
does not need to be changed.
BMW recommends using only
a specially formulated synthetic gear oil
(SAF-XO) that is
available through an authorized
BM\N dealer parts depart-
ment. For additional information on this lubricant and any
other lubricants that may be compatible, contact an
authorized
BMW dealer service department.
< Check rear differential oil level at filler plug (arrow).
- Check lubricant level with car on a level surface:
Level is correct when fluid just reaches edge of filler hole.
If necessary, top up fluid.
Replace filler plug sealing ring.
Install and tighten oil filler plug when oil level is correct.
NOTE-
Use either a 14 mm or 17 mm Allen socket to remove the
drain plug.
If the car is raised in the air, it should be level when
checking or filling final drive fluid level.
Tightening torque
Filler plug to final drive housing 70 Nrn (52 it-lb)

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Maintenance
BODY AND INTERIOR MAINTENANCE
Body and hinges, lubricating
Door locksand loclccylinderscan be lubricated with an oil that
contains graphite.
Body and doorhinges, hood latch and doorcheclc rods should
be lubricated with
SAE 30 or SAE 40 engine oil. Lubricate
seat runners with multipurposegrease. Do not apply any oil to
rubber parts.
If door weather-strips are sticking, lubricate
them with silicone spray or talcum powder. The hood release
cable should be lubricated as well.
The use of winter
lock deicer sprays should be lkept to an
absolute minimum, as the alcohol in the deicer will wash the
grease out of the lock assemblies and may cause locks to
corrode internally or to become difficult to operate.
Exterior washing
The longer dirt is left on the paint, the greater the risk of dam-
aging theglossy finish,
eitherby scratching or by thechemical
effect dirt particles may have on the painted surface.
Do not wash the car in direct sunlight. If the engine hood is
warm, allow it to cool. Beads of water not only leave spots
when dried rapidly by the sun or heat from theengine, but also
can act as small magnifying glasses and burn spots into the
finish. Wash the car with a mixture of lukewarm water and a
car wash product. Rinse using plenty of clear water. Wipe the
body dry with a sofl cloth towel or chamois to prevent
water-spotting.
Interior care
Dirt spots can usually be removed with lultewarm soapy water
or a dry foam cleaner. Use spot remover for grease and oil
spots. Do not pour the liquid directly on the carpet or fabric,
but dampen a clean cloth and rub carefully, starting at the
edge of the spot and working inward. Do not use gasoline,
naphtha, or other flammable substances.
Leather upholstery and trim
Leather upholstery and trim should be periodically cleaned
using a slightly damp cotton or wool cloth. The idea is to get
rid of the dirt in the creases and pores that can cause brittle-
ness and premature aging. On heavily soiled areas, use a
mild detergent (such as
wooliteQ) or other specially formulat-
ed leather cleaners. Dry the trim and upholstery completely

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11 0-4
/Engine Removal and Installation
- Disconnect negative (-) cable from battery.
CAUTION- Prior to disconnecting the
batteg read the battery discon-
nection cautions
in 001 General Cautions and Warnings.
- Remove engine hood, or place in service position. See 410
Fenders, Engine Hood.
4 Remove left and right interior ventilation ducts (lefl side
shown):
Release ventilation filter cover latch (A) and remove cover.
Release plastic loclting tab
(6) or release locking tabs on
top of duct (later models).
Rotate duct counterclocltwise to
unloclt from bulkhead and
remove (arrow).
Disconnect electrical harness from hood switch (C).
Release spring
loclt (D).
Slide filter housing away from inner fender to remove.
Removal of right side ventilation duct is similar.
Remove rear bulkhead panel:
Remove rubber sealing gasket (arrow).
- Remove 3 mounting clips (A).
Remove
4 retaining screws (6).
Lift off panel.
Remove complete air filter housing:
Loosen
intalte duct hose clamp (A) at throttle assembly.
Loosen clamp and remove idle control line from intalte duct
(6) and (where applicable) disconnect idle speed control
valve electrical harness connector.
Disconnect harness connector (C) from mass air flow sen-
sor.
Remove air filter housing mounting screw (D).
Disconnect vent tube
(E).
Loosen air intake duct clamp (F).
Carefully lift air filter housing out of engine bay.

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. .- -
I Engine Removal and Installation I
4 Where applicable, remove schraedervalve cap (arrow) from
air connection on fuel rail. Using a tire chuck, blow fuel back
through feed line using a brief burst of compressed air
(rnax-
imum of 3 bar or 43.5 psi).
WARNING -
Fuel in fuel line is under pressure (approx. 3 - 5 bar or 45 -
75psi) andmay be expelled underpressure. Do not smoke
or work near heaters or other fire hazards. Keep a fire ex-
tinguisher handy Before disconnecting fuel hoses, wrap
a
cloth around fuel hoses to absorb any leaking fuel. Catch
and dispose of escaped fuel. Plug all open fuel lines.
Alwavs unscrew the Fuel tank cao to release
oressure
I in the tank before working on the tank or lines. I
- Raise car and support in a safe manner.
WARNING-
Male sure the car is stable and we/ supported at all times.
Use a professional automotive lift orjackstands designed for
the purpose. A floor jack is not adequate support
- Working underneath car, remove protective engine splash
guard.
4 Disconnect fuel lines by sliding locking collar in (arrows) and
pulling line apart.

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Engine Removal and lnstallationl
NOTE-
BMW uses three styles of fuel line connections; a one-time
single use clamp, a locking fitting that uses special tool
16 1
050 to release, and a quick release sleeve (arrow) that dis-
connects the line when depressed.
WARNING-
Fuel may be expelled under pressure. Do not smoke or work
near heaters or other fire hazards. Keep a fire extinguisher
handy Before disconnecting fuel hoses, wrap a cloth around
fuel hoses to absorb any leaking fuel. Plug all
oDen fuel lines.
< M52 engine: Remove throttle valve and ASC throttle
assemblies.
Disconnect ASC throttle cable
(A).
Remove ASC throttle housing mounting fasteners (El).
Clamp off, disconnect, and plug coolant hoses (C).
Disconnect throttle and cruise control cables (D).
Remove throttle housing mounting hardware and throttle
valve.
NOTE-
M52 TU, M54 engine: Throttle body is removed with intake
manifold.
< M52 TU engine: Pull throttle cable out of rubber retainer (A)
and unloclc ball end of cable (6) from throttle actuator.

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110-16
Engine Removal and Installation
ENGINE, REMOVAL AND
INSTALLATION (V-8 MODELS)
NOTE-
Engine removal procedures are similar for all V-8 models.
When differences exist, they are noted at the beginning of
each step. Engine are referred to by engine code. If neces-
sary, See
100 Engine-General for engine code andappli-
cation information.
Be sure to cover all painted surfaces before beginning the
removal procedure. As an aid to installation, label all com-
ponents, wires and hoses before removing them. Do not
reuse gaskets, O-rings or seals during reassembly
WARNING
-
Due to risk ofpersonal injury, be sure the engine is cold be-
fore beginning the
removal procedure.
- Disconnect negative (-) cable from battery.
Prior to disconnecting the battery, read the battery discon-
nection cautions given in
001 General Cautions and
Warnings.
- Remove engine hood or place hood in service position. See
410 Fenders, Engine Hood.
Remove
intake manifold cover, version 1:
Remove plastic trim caps (arrows).
Remove cover mounting fasteners and
lift off cover.
Remove intake manifold cover, version
2:
Press down on locking pins (arrows) to release locks
Lifl cover straight
up to remove.