Automotive electrical systems
More informationAt Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.
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Audi A6 C6 MMI Multimedia Sat Nav Navigation Control Head Unit 4E0035652A
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Audi A4 B8 Bose Audio AMP Amplifier Module Control Unit ECU 8T0035223AD
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Audi Q7 4L Air Suspension Adjustment Module Control Unit ECU 4L0907553
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Audi Q5 8R 2.0 TDI CJCA Diesel Engine Alternator Generator 03G903016G
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Audi A3 8V Heater Blower Motor Fan Resistor 5Q0907521D
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Audi A4 B7 4.2 FSI V8 Petrol Engine Alternator Generator 079903018X
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Audi A4 A5 A6 Q5 Q7 Radio Control Head Unit Harman Becker 4F0035061D
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Audi Q5 8R Door Module Front Left N/S Control Unit ECU Controller 8W1959592
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Audi TT 8J 2.0 TFSI BWA 200HP Engine Control Module ECU Manual 8J0907115N
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Audi A3 8V Module BCM Body Control Unit Module ECU 5Q0937084AA
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Audi A4 B8 2.0TDI CAHA 170HP Quattro Engine ECU Kit Ignition + 2 Key 03L906022RM
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Audi Q7 4L Quattro Diesel 3.0 TDI ALternator Generator 180A Bosch 059903018K
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Audi A4 B8 A5 8T Body Control Comfort Unit Module BCM Unit ECU 8K0907063D
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Audi A1 8X Central Gateway Control Unit Module Relay Supply ECU 8X0907063R
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Audi Q7 4L Steering Column Lock Mechanism Control Unit Module ECU 4F0905852B
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Audi Q7 4L On Board Onboard Supply Module Control Unit ECU 4F0907280B
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Audi Q5 FY Alternator Generator Valeo 2.0 TFSI 06L903027
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Audi A8L 4H Voltage Converter Stabilizer Control Module Unit ECU 8K0959663C
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Audi Q7 4L Automatic Transmission Module Controller Unit 09D927750FS
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Audi A5 F5 Xenon Headlight Resistor Ballast Relay Module Unit 7PP941572AC
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Audi A4 B9 Front Centre Dashboard Tweeter Speaker 8W0035454
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Audi S4 B8 Alarm Siren Body Sound Impact Actuator Speaker 4H0907601A
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Audi A1 8X 1.4 TFSI CZCA Alternator Generator 04C903023T
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Audi A4 B7 Stereo Radio Sound Audio Amplifier Module Harman Becker 8E5035223D
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VW Volkswagen Audi Seat Skoda Glow Plug Relay Unit Black 511 9 Pins 04L907282
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Audi A5 8T CD Player Radio Multimedia MMI Head Unit ECU 8T2035666D
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Audi A3 8V 2.0 TDI CRLB Diesel Alternator 03F903023D
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Audi A3 8V MMI Multimedia CD Player Head Unit Infotainment 8V0035020H
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Audi A3 8P VW Scirocco Mk3 Starter Motor Engine Valeo 1.4 TSI Petrol 02Z911024P
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Audi A3 8P Fusebox Body Control Comfort Module BCM Unit ECU 8P0907279F
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Audi TT FV Entry Keyless Kessy Control Module Unit ECU 3Q0959435B
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Audi A3 8P TT 8J A4 B7 Ipod Interface Multimedia Storage Compartment 8E0857925B
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Audi TT FV Central Gateway Control Unit Module ECU 8S0907468B
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Audi A3 Starter Motor Engine Diesel 02E911023H
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Audi A3 8V Air Module Control Unit SRS System ECU 5Q0959655A
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Audi A7 4G8 Central Gateway Control Lear Module Unit ECU 4G0907468G
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Audi A4 B8 2.0 TFSI Petrol Engine Starter Motor 06H911021
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Audi A1 8X Starter Motor Petrol Engine Electrical Unit Actuator 02M911024J
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Audi Q3 8U Air Module Crash Impact Sensor Control Unit 8U0959651
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Audi A4 B8 A5 8T 2.0 TDI CGLD Engine Control Unit ECU 03L906018JH Manual
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Audi Q5 FY Gateway Control Module Unit ECU 8W5907468F
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Audi A4 B7 Fuel Pump Sender Control Relay Module Unit ECU 4F0906093G
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Audi A3 8V Body Control Comfort Unit Module BCM Unit ECU 5Q0937084AJ
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Audi A4 B9 2.0 TFSI CVKB 190HP Engine Control Unit ECU 06L907309A Automatic
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Audi A5 8T Alternator Generator Electrical Unit 150A 14V 3.0 TDI 059903019N
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Audi A7 4G8 Tailgate Lift Boot Lid Control Unit Module Trunk 4G8959107N
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Audi TT 8N Radio Stereo Player Head Unit Chorus 4B0057186PX
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Audi TT 8J Petrol Engine Starter Motor 2.0 TFSI BWA 02E911023J
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Audi A5 8T 2.0 CNCD Petrol Starter Motor 06H911024B
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Audi A8L 4H TV Tuner Digital Video Control Module 4G0919129C
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Audi Q2 GA 3.0 TDI DTTC Diesel Engine Alternator Generator 05L903026B
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Gateway Control Module Audi A3 8V Volkswagen MK7 ECU Unit 5Q0907530Q
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Audi A6 C6 Antenna Amplifier Control Unit Module ECU 4F9035225H
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Audi A3 8P Air Module Control Sensor SRS System ECU Unit 8P0959655H
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Audi A3 8P Body Control Module Unit 8P0907063G
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Audi A4 B7 Door Harness Loom Cable Wiring Rear 8E1971687L
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AUDI A7 4G8 Parking Assist Sensors Distance Control Module 4H0919475N
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Audi A5 8T A4 B8 8K BCM Body Control Unit Module Power Supply 8K0907063B
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Audi Q7 4M Gateway Interface Control Unit Module ECU 4KE907468F
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Audi A4 B8 A5 8T A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181B
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Key components of vehicle electrical systems
Original electrical parts for popular car brands
A car's electrical system is a complex system responsible for many key functions—from engine starting to lighting and on-board electronics. Modern cars are equipped with increasingly advanced electrical solutions that not only improve driving comfort but also enhance safety. At the Global Parts automotive store you will find a wide range of used car parts , such as alternators, starters, batteries, control modules and other automotive electrical systems that perfectly fit BMW , Audi , Mercedes , Volkswagen , Mini and many others.
How does a car's electrical system work?
A car's electrical system is a complex system that consists of several key components that work together to ensure the vehicle's reliable operation:
- Battery accessories – Includes clamps, cables, holders and other components necessary for battery installation and maintenance.
- Electronic control modules and controllers – They control and manage the operation of various vehicle systems, such as the engine, air conditioning and ABS.
- Alternators and generators – Responsible for generating electricity and charging the battery while the engine is running.
- Parts for alternators and generators – Including voltage regulators, brushes and bearings that ensure proper operation of the alternator.
- Starters – Key components of the starting system that enable the engine to be started.
- Starter parts – Including bendixes, rotors and solenoids necessary for the proper operation of the starter.
- Batteries – They store the electrical energy necessary to start the engine and power on-board systems.
- Wires, harnesses and connectors – They transmit energy and electrical signals between various vehicle systems.
- Fuses and fuse boxes – Protect the electrical system against overloads and short circuits.
- Relays – They control the flow of current in individual electrical circuits of the vehicle. A functioning electrical system is the basis for the reliability of your car, regardless of operating conditions.
Key technical parameters of electrical systems
Each of these components has specific technical parameters that determine its compatibility with the vehicle. For example, alternators installed in mid-range cars (e.g., Volkswagen Passat B6) typically have a capacity of 90 A to 140 A, while luxury vehicles (e.g., Mercedes S-Class) require alternators with a capacity exceeding 180 A. Starter motors vary in torque and operating voltage – the standard is 12 V, while 24 V starters are used in heavy-duty vehicles.
Why is it worth taking care of your car's electrical system?
Regular maintenance and replacement of electrical system components is key to reliability and road safety. Faulty components can lead to:
- Problems starting the engine.
- Failure of safety systems such as ABS or airbags.
- Decreased efficiency of on-board equipment, e.g. lighting or air conditioning. At the Global Parts store we offer original used car parts , which have undergone detailed quality tests, ensuring their full functionality.
Symptoms of electrical system disruptions
In practice, electrical faults manifest themselves in a variety of ways. Drivers most often notice: dimming lights when parked, difficulty starting the engine, a voltage drop on the on-board computer, or air conditioning malfunctions. The table below presents typical correlations:
| Symptom | Possible cause | Item to check |
|---|---|---|
| Difficulty starting the engine | Worn out starter or battery | Starter motor, battery |
| Dimming the lights | Inefficient alternator | Alternator, voltage regulator |
| Electric windows not working | Damaged relays or harness | Relays, wires |
How to choose the right parts for your electrical system?
When choosing parts for the electrical system, such as alternators, starters or control modules, it is worth paying attention to:
- Vehicle-specific fit – Every car make and model requires specific specifications. At Global Parts, you'll find parts that perfectly fit BMW , Audi , Mercedes , Volkswagen , Mini, and many more .
- Technical condition – All used parts we offer are thoroughly checked to ensure their reliability.
- Technical parameters – For example, alternators should have appropriate current output, adapted to the needs of your vehicle.
Compatibility and fit
The selection of electrical parts is based primarily on OEM part numbers, but matching them to specific parameters is equally important, including current, voltage, and the number of connector pins. For example, the 120A alternator used in the Audi A4 B7 differs significantly from the 150A version installed in the Audi A6 C6 . Therefore, using manufacturer catalogs or providing the VIN makes finding the right component much easier.
Why choose used electrical parts?
Purchase of used car parts This solution allows you to combine savings with quality. Why choose it?
- Lower costs – Used alternators, starters and other parts are cheaper than new ones, but offer the same high quality.
- Ecology – You support recycling and reduce waste by choosing used car parts .
- Wide range – We offer electrical parts for the most popular car brands, so you can easily find what you need.
How to take care of your car's electrical system?
To ensure your electrical system operates reliably for years, it is worth remembering a few rules:
- Regularly check the battery condition and charge level.
- Take care of your cables and connectors – corrosion or damage can lead to voltage drops and failures.
- Monitor the operation of the alternator and starter – early detection of problems will help avoid more serious breakdowns. If you have any problems, you will find the right car parts at Global Parts that will help restore your vehicle to full working order.
Step-by-step control procedures
- Measure the battery voltage with a multimeter – the resting value should be approximately 12.6 V.
- Check the charging voltage with the engine running – the correct range is 13.8–14.5 V.
- Assess the condition of the wires and terminals – lack of corrosion and a firm seat are essential.
- If in doubt, check the quiescent current consumption – it should not exceed 0.05–0.08 A.
FAQ - Frequently asked questions about electrical systems in cars
| Question | Answer |
|---|---|
| What is a car electrical system? | This is a set of components responsible for powering and controlling all electrical functions in the car – from engine starting to multimedia. |
| What is an alternator for in a car? | The alternator generates electrical current when the engine is running and charges the battery. |
| What is the difference between a starter and an alternator? | The starter motor is used solely to start the engine, while the alternator is responsible for generating energy while driving. |
| How to check if the battery is working? | Just measure its voltage – a healthy battery should have approximately 12.6 V at rest and maintain a voltage above 10 V during cranking. |
| What are the most common symptoms of car electrical failure? | Problems starting the engine, flashing warning lights, power windows not working or dimming lights. |
| Do electrical parts from one model fit another? | Sometimes yes, but the key is to match it by VIN or OEM number – this guarantees compatibility. |
| How often should you check your electrical system? | It is worth performing basic diagnostics (battery, alternator) at least once a year or before a long trip. |
Summary: Automotive electrical systems at Global Parts Automotive Store
Automotive electrical systems are the foundation of the reliability and comfort of every modern vehicle. By choosing the right parts, such as alternators, batteries, and control modules, you can ensure your car's full operational efficiency. The Global Parts automotive store invites you to browse our wide selection of original used car parts . Whether you're looking for car parts for BMW , Audi , Volkswagen , Mercedes, Mini , or others, you'll find them at competitive prices. We strive to ensure every customer finds the right parts for their car, and if you have any questions or concerns about selecting the right components, we're happy to help! Please contact us – we're here to help! For more information and interesting facts, visit our automotive blog .