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2003 BMW Z4 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
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Tire Pressure Monitoring System
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 2003 BMW Z4 AUTOMOBILES
Air Bag System Precautions -> BMW -> Arming
Vehicle: 2003 BMW Z4 Roadster 3.0 L6 GAS
- Ensure nobody is in vehicle, then connect battery positive cable, then ground cable.
- From a safe position to the side of or below air bag modules, turn ignition On and observe air bag indicator lamp. Lamp s...
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BRAKE SERVICE PROCEDURES FOR 2003 BMW Z4 AUTOMOBILES
Anti-lock Brakes -> Diagnosis & Testing -> Accessing Diagnostic Trouble Codes -> Clearing Diagnostic Trouble Codes -> Diagnostic Trouble Code Interpretation -> Wiring Diagrams
Vehicle: 2003 BMW Z4 Roadster 2.5 L6 GAS
Accessing Diagnostic Trouble Codes
Diagnosis is only available using the BMW Diagnostic System. Refer to BMW testing system manufacturer's instructions to diagnosis ABS faults.
Diagnostic Trouble Code Interpretation
R...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 BMW Z4 AUTOMOBILES
BMW -> Fuel Filter Replacement -> X3 & Z4 -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 2003 BMW Z4 Roadster 3.0 L6 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 Re...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 BMW Z4 AUTOMOBILES
CV AXLE SHAFT, Replace -> REAR
Vehicle: 2003 BMW Z4 Roadster 3.0 L6 GAS
REAR
- Raise and support vehicle, then remove rear tire and wheel assembly.
- Disconnect retaining plate.
- Remove axle nut.
- Remove mounting bolts and halfshaft from differential flange. Suspend shaft with suitable wire.
- Support trailing arms busing a suitable transmissio...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2003 BMW Z4 AUTOMOBILES
Component Replacement -> Installation -> Removal -> Tire Pressure Sensor
Vehicle: 2003 BMW Z4 Roadster 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 v...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 BMW Z4 AUTOMOBILES
Starter, Replace
Vehicle: 2003 BMW Z4 Roadster 3.0 L6 GAS
- Disconnect battery ground cable, then remove air cleaner and air flow sensor.
- Remove oil dipstick tube.
- Remove starter solenoid cover.
- Disconnect electri...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 BMW Z4 AUTOMOBILES
BMW -> Automatic Stability Control (ASC, ASC+) & Dynamic Stability Control (DSC) Warning Lamp ->
Vehicle: 2003 BMW Z4 Roadster 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 syst...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 BMW Z4 AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 BMW Z4 Roadster 2.5 L6 GAS
Lower
- Drain coolant into a suitable container.
- Reposition hose clamp at radiator and remove hose.
- Reposition hose clamp at water inlet and remove hose.
- Remove hose from vehicle.
- Reverse procedure t...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 BMW Z4 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 BMW Z4 Roadster 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 Z4 AUTOMOBILES
Component location diagrams for most 2003 BMW Z4 cars and light trucks sold in the U.S. from 1990+.
Engine Compartment Diagram for 2003 BMW Z4 Roadster 2.5 L6 GAS Components on diagram: |
Underbody Components Diagram for 2003 BMW Z4 Roadster 3.0 L6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2003 BMW Z4 AUTOMOBILES
OEM drawn wiring diagrams for most 2003 BMW Z4 cars and light trucks sold in the U.S.
2003 BMW Z4 Roadster 3.0 L6 GAS Wiring Diagram Components on diagram: |
2003 BMW Z4 Roadster 2.5 L6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 BMW Z4 AUTOMOBILES
OEM TSB listings for most 2003 BMW Z4 cars and light trucks sold in the U.S. from 1985+.
Document: 1-Hour Windshield Urethane Vehicle: 2003 BMW Z4 Roadster 3.0 L6 GAS Auto Systems: |
Document: Power Fold Mirror Position Incorrect Vehicle: 2003 BMW Z4 Roadster 3.0 L6 GAS |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 BMW Z4 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 BMW Z4 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 Z4 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 Z4 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 Z4 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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