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2003 BMW 525I CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT BMW REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake 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
A/C & HEATER SERVICE PROCEDURES FOR 2003 BMW 525I AUTOMOBILES
Computer Relearn Procedures -> BMW
Vehicle: 2003 BMW 525I Sport Wagon 2.5 L6 GAS
Disconnect or replace DME control unit only when ignition switch is off. After renewed operation, neutral basic values are set in the control unit for idle and emission control. An...
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BRAKE SERVICE PROCEDURES FOR 2003 BMW 525I AUTOMOBILES
Anti-lock Brakes -> Troubleshooting
Vehicle: 2003 BMW 525I 2.5 L6 GAS
Refer t...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 BMW 525I AUTOMOBILES
BMW -> Fuel Filter Scheduled Maintenance -> 1999-06
Vehicle: 2003 BMW 525I 2.5 L6 GAS
Inspection interval is determ...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 BMW 525I AUTOMOBILES
CV AXLE SHAFT, Replace -> REAR
Vehicle: 2003 BMW 525I Sport Wagon 2.5 L6 GAS
REAR
- On models equipped with air suspension, proceed as follows:
- Remove air supply system fuse.
- Disconnect distributor block lines.
- On all models, raise and support vehicle, then remove rear tire and wheel assembly.
- Remove rear axle carrier.
- Remove output shaft to transmission ...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2003 BMW 525I AUTOMOBILES
Component Replacement -> 1997-2003 -> Installation -> Removal -> Tire Pressure Sensor -> TPMS Antenna -> TPMS Control Module
Vehicle: 2003 BMW 525I Sport Wagon 2.5 L6 GAS
Tire Pressure Sensor
Removal
- Dismount tire using suitable tire machine ensuring not to damage tire pressure sensor.
- Remove the Torx screw, then the tire pressure sensor.
- Release valve stem union nut using removal tool No. 00 2 190, or equivalent Fig. .
- Remove washer from wheel.
Installation
- Install new Torx screw on tire pressure sensor, then twist new valve stem by hand approximately three turns. Do not tighten Torx screw, sensor and valve stem must be loosely joined together.
- Install the tire pressure sensor on wheel. Ensure the radial bore for gripping on the circumference of t...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 BMW 525I AUTOMOBILES
Alternator, Replace
Vehicle: 2003 BMW 525I Sport Wagon 2.5 L6 GAS
- Remove intake air filter housing.
- Lock belt pulley in position using suitable holding tool, then remove water pump fan clutch mounting nut using suitable wrench tool. Nut has lefthand threads.
- Remove fan wheel with coupling.
- Remove drive belt.
- Remove mounting bolt...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 BMW 525I AUTOMOBILES
Cabin Air Filter Service -> BMW -> 1996-2005 5 Series
Vehicle: 2003 BMW 525I 2.5 L6 GAS
Service interval is determined by the service indicator.
- Open the hood.
- Turn quick-release fastener approximately, 90° counterclockwise. Unlatch the cabin air filter cover retainers.
- Remove the cabin air fi...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 BMW 525I AUTOMOBILES
BMW -> Automatic Transmission Indicator Lamp ->
Vehicle: 2003 BMW 525I Sport Wagon 2.5 L6 GAS
The warning lamp is used to warn of a system fault. It will be lit during engine start-up, but should go out when the self-diagnostic system determines that the system is functioning properly. The warning lamp will also flash when the system ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 BMW 525I AUTOMOBILES
Radiator, Replace
Vehicle: 2003 BMW 525I Sport Wagon 2.5 L6 GAS
- Open coolant expansion tank cap and loosen vent plug.
- Raise and support vehicle, then remove mounting bolts and front splash shield.
- Open radiator plug and drain coolant into suitable container.
- Open plug on righthand side of engine block near cylinder No. 2 and drain coolant into suitable container.
- Lock belt pulley in position using holding tool No. 11 5 030, or equivalent, then remove water pump fan clutch mounting nut using wrench tool No. 11 5 040, or equivalent. Nut has lefthand threads.
- Remove fan wheel with coupling.
- Disconnect level sensor connector, then disconnect clamp a...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 BMW 525I AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 BMW 525I Sport Wagon 2.5 L6 GAS
- If reusing belt, mark belt with rotational direction for installation alignment.
- Lock belt pulley in position using suitable holding tool, then remove water pump fan clutch mounting nut using suitable wrench. Nut has lefthan...
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COMPONENT LOCATION DIAGRAMS FOR 2003 BMW 525I AUTOMOBILES
Component location diagrams for most 2003 BMW 525I cars and light trucks sold in the U.S. from 1990+.
Center Console, Front Diagram for 2003 BMW 525I 2.5 L6 GAS Components on diagram: |
Front of Engine, Left Diagram for 2003 BMW 525I Sport Wagon 2.5 L6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2003 BMW 525I AUTOMOBILES
OEM drawn wiring diagrams for most 2003 BMW 525I cars and light trucks sold in the U.S.
2003 BMW 525I 2.5 L6 GAS Wiring Diagram Components on diagram: |
2003 BMW 525I Sport Wagon 2.5 L6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 BMW 525I AUTOMOBILES
OEM TSB listings for most 2003 BMW 525I cars and light trucks sold in the U.S. from 1985+.
Document: Tools and Equipment Vehicle: 2003 BMW 525I 2.5 L6 GAS Auto Systems: |
Document: Turbocharger Installation Tool Vehicle: 2003 BMW 525I 2.5 L6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 BMW 525I AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 BMW 525I 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 2003 BMW 525I 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 2003 BMW 525I 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 2003 BMW 525I 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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