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2004 BMW 645CI CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT BMW REPAIR SHOPS DON'T WANT YOU TO KNOW
Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!Select Section
- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Tire Pressure Monitoring System
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2004 BMW 645CI car and truck
repair procedures including BMW engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your BMW 645CI automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2004 BMW 645CI AUTOMOBILES
Air Bag System Precautions -> BMW -> Disarming
Vehicle: 2004 BMW 645CI 4.4 V8 GAS
Prior to disconnecting any air bag/Supplemental Restraint System (SRS) electrical connectors, servicing any system components or other components located near an SRS electrical connector, the system must be disarmed. The connectors and components are identified by their orange color.
- Obtain radio theft protection code prior to disconnecting battery.
- Disconnect grou...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 BMW 645CI AUTOMOBILES
BMW -> Fuel Filter Replacement -> Except X3 & Z4 -> Fuel System Pressure Relief -> Models w/Fitting Or Union Bolt Connection -> Models w/Fuel Hose Connection -> Removal & Installation
Vehicle: 2004 BMW 645CI 4.4 V8 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while it relearns its adaptive strategy.
Fuel System Pressure Relief
- Obtain the vehicle owner's radio theft protection code.
- Remove the fuel pump relay(s).
- Start the engine and allow it to stall.
- Crank engine for 10 seconds to ensure the fuel pressure has been...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2004 BMW 645CI AUTOMOBILES
CV AXLE SHAFT, Replace -> Rear
Vehicle: 2004 BMW 645CI 4.4 V8 GAS
Rear
The CV drive shafts differ in length. If required, mark CV drive shafts. The left CV drive shaft is shorter than the right CV drive shaft.
- Raise vehicle on lift.
- Remove rear wheel lug nuts.
- Apply hand brake.
- Remove hub cover.
- Remove collar nut.
- Assemble suitable tool and remove drive ...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2004 BMW 645CI AUTOMOBILES
Reset Procedures
Vehicle: 2004 BMW 645CI 4.4 V8 GAS
When a tire pressure warning light is observed, Check and inflate tire(s) to specified pressures. After correcting the air pressure with the engine off and the ignition on, press the Se...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2004 BMW 645CI AUTOMOBILES
Alternator, Replace
Vehicle: 2004 BMW 645CI 4.4 V8 GAS
- Disconnect battery ground cable.
- Remove bolts securing radiator cover.
- Disconnect cooling fan sensor connector.
- Disconnect oil cooler hoses. Drain fluid into suitable container and replace new O-rings upon installation.
- Lift fan cowl up and push retaining tabs in to remove fan cowl.
- Remove oil cooler mounting bolts from fan cowl and set aside.
- Raise vehicle on suitable lift.
- Remove retainers from lower engine splash shield.
- Open cap on coolant reservoir. Drain coolant into suitable container and never drain coolant when engine is hot to avoid scalding of skin.
- Open drain plug on bott...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2004 BMW 645CI AUTOMOBILES
Cabin Air Filter Service -> BMW -> 2004-05 645 & 2006-07 525, 530 & 2006-09 550, 650, M5, M6 & 2008-09 528 & 535
Vehicle: 2004 BMW 645CI 4.4 V8 GAS
The service interval is determined by the service indicator.
- Open the hood.
- Rotate the quick release fastener 90° counterclockwise, Fig. .
- Release the retainer located at the side of the cabin air filter cover, the r...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2004 BMW 645CI AUTOMOBILES
BMW -> Service Indicator Cluster ->
Vehicle: 2004 BMW 645CI 4.4 V8 GAS
The service indicator cluster is used indicate when periodic maintenance is required. The service indicator consists of one yellow, five green and three red Light Emitting Diodes (LEDs), with the inscriptions "Oil Service" and "Inspection." When the ignition switch is turned to the On position, as many as five green LEDs will be illuminated.
The green LEDs will go out when the engine is started. If the yellow LED and one of the inscriptions illuminates with the ignition switch in the On position, and remain on after the engine has started, service the maintenance inscription indicated immediately. ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2004 BMW 645CI AUTOMOBILES
Radiator, Replace
Vehicle: 2004 BMW 645CI 4.4 V8 GAS
- Remove fan cowl.
- Remove front underbody protection.
- Drain coolant using a suitable container.
- Detach heat e...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2004 BMW 645CI AUTOMOBILES
Serpentine Drive Belt, Replace -> A/C Compressor Drive Belt -> Alternator Drive Belt
Vehicle: 2004 BMW 645CI 4.4 V8 GAS
Alternator Drive Belt
- Remove fan clutch and fan impeller.
- Unfasten cap nut from water pump, using suitable tools.
- Remove fan wheel with fan coupling from water pump, using suitable spanner wrench. Fan has left handed threads.
- Mark direction of travel and reinstall drive belt in same direction of travel, if belt is to be reused.
- Rotate or lift the belt tensioner arm, using a suitable Torx socket to relieve tension from drive belt.
- Remove the drive belt.
- Clean pulleys and inspect for ...
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COMPONENT LOCATION DIAGRAMS FOR 2004 BMW 645CI AUTOMOBILES
Component location diagrams for most 2004 BMW 645CI cars and light trucks sold in the U.S. from 1990+.
 Instrument Panel Components Diagram for 2004 BMW 645CI 4.4 V8 GASComponents on diagram: |
 Engine Compartment Components Diagram for 2004 BMW 645CI 4.4 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2004 BMW 645CI AUTOMOBILES
OEM drawn wiring diagrams for most 2004 BMW 645CI cars and light trucks sold in the U.S.
 2004 BMW 645CI 4.4 V8 GAS Wiring DiagramComponents on diagram: |
 2004 BMW 645CI 4.4 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2004 BMW 645CI AUTOMOBILES
OEM TSB listings for most 2004 BMW 645CI cars and light trucks sold in the U.S. from 1985+.
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Document: Tools and Equipment Vehicle: 2004 BMW 645CI 4.4 V8 GAS Auto Systems: |
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Document: Turbocharger Installation Tool Vehicle: 2004 BMW 645CI 4.4 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2004 BMW 645CI AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 BMW 645CI cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2004 BMW 645CI cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2004 BMW 645CI cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2004 BMW 645CI cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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