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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Radio Player BMW F10 F11 F20 F21 F25 F30 F31 Alpine CD Champ 2 Head Unit 9248361
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BMW X1 F48 Dashboard Monitor Display Central NAV Information Screen 6,5" 8803369
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VW Volkswagen New Beetle 1.6 BFS Petrol Starter Generator Motor 02A911023L
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Mercedes W251 W211 Air Suspension Control Module Unit ECU A2515450316
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Mercedes W205 Radio Audio Navi GPS Head Unit A2059007815
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Mercedes Sprinter W906 Fuse Box Relay Bracket Monunt Holder A9065460643
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Mercedes-Benz B-Class W245 Central Gateway Control Unit Module ECU A1695403945
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Mercedes-Benz A B Class W176 W246 Diesel Fuse Box Relay Unit A2465402150
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BMW F20 F21 F30 LCI M140i 340i Wiring Harness Motor Sensor System Module 8631656
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Ford Transit Engine Control Unit ECU 4VFB Module 2.2 TDCi CC11-12A650-AB
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Mercedes Vito W639 PDC Parking Distance Control Unit Module ECU A6395450232
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Rain Sensor Ford Fiesta MK7 Mondeo MK4 Windscreen Light Module 8A6T17D547AB
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Engine Harness BMW F20 F21 F30 F31 Petrol N13 Sensor Module 1 Wiring 7607975
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Vauxhall Opel Relay 4-Pin Tyco Unit Yellow 90226846
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SAM Module Mercedes W203 Fuse Box Control Unit Relay A2035453501
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Skoda Octavia II Negative Battery Terminal Cable Wire Wiring 1K0971250
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Mercedes W203 Aerial Antenna Amplifier Module Unit A2038206489
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Starter Motor Volkswagen VW Golf VI Passat B6 Tiguan Diesel Engine 02M911024
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Audi A4 B8 AV10NEO Display Screen Radio Multimedia Navigation Sat 8T0919603A
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Audi A3 8P Alternator Generator Diesel Engine Electrical Unit 03L903023A
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Seat Wiring Mercedes C117 W176 W246 Loom Harness Cable Left N/S A2465409711
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Audi RS4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907064JJ
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Audi A4 A5 A6 Q5 Q7 Radio Control Head Unit Harman Becker 4F0035053B
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Mini Cooper R50 R52 R53 W10 1.6 Petrol Engine Starter Motor 7570488
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Audi TT Mk2 8J 2.0 TFSI BWA 200HP Engine ECU Kit Ignition + Key 8J0907115N
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Air Module BMW E60 E63 Control Unit Centre Sensor ECU 6952994
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Volkswagen Golf Mk7 5G Alternator Generator 2.0 TFSI CHHA 06J903023H
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Mini Cooper R56 LCI R60 N16 1.6 Petrol Engine ECU Kit DME 7615981 + CAS 3 + Key
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BMW F45 F46 Mini F55 F56 F57 Parking Assistant PDC Control Unit Module 6805061
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VW Volkswagen Touareg 7L Front Bumper PDC Parking Sensor Wire Harness 7L6971095G
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Mercedes SLK R170 W202 W210 Module Control Unit SRS Sensor ECU Bosch A0018200826
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Fuse Box Mercedes W204 Rear SAM Relay Control Unit Module A2049009501
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BMW F10 Central Gateway Module Control Unit Lear ZGW-02 MID Plus 9267516
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BMW F10 PDC Rear View Backup Camera Control Module Unit ECU 9288002
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Audi A4 B9 A5 F5 Q7 4M Q5 FY VW Volkswagen Touareg Mk3 Starter Motor 057911024
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BMW 3 Series E91 E92 E93 Hifi Speaker Tweeter Rear 6942461
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BMW X3 F25 Footwell Light Control Unit Module ECU FRM III TEMIC 6823594
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Mercedes Sprinter W901 W638 Fuse Box Relay Control Unit Module A0005400650
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AUDI S4 B8 Quattro Dynamic Suspension Electric Damper Control Module 8K0907364A
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Audi A1 8X 1.4 TSI CAXA 122HP Engine Control Unit ECU Kit 03C906016BG BCM + Key
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BMW E87 LCI E90 E92 120i 320i N43 170HP ECU Kit DME 7580279 CAS3 + Key Manual
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Audi A1 8X 1.4 TFSI CZCA Engine Wiring Harness Loom Manual Gearbox 04E971612BD
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Mercedes GLC X253 220d 170HP 651.921 Engine Unit ECU A6519006401 Automatic
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BMW E60 E61 E63 E64 CAS2 ECU Control Unit Module 6943797 61356943797
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Mercedes W202 Ignition Engine Control Unit Module C180 M111 Petrol A0185454132
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Ford Transit Connect Engine Control Unit ECU 9TGH Module 1.8 TDCi 9T11-12A650-GH
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Mercedes W204 CD Player Radio Stereo Navigation Sat Nav Head Unit A2049009410
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Peugeot Boxer II Citroen Relay III Fuse Box Control Unit Module 46858322
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Alternator Volkswagen Transporter T5 2.0 TDI Diesel Engine 110A Bosch 06F903023L
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Mercedes W204 C200CDI BlueEFFICIENCY OM651.913 Engine ECU Kit A6511500126 Key
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BMW F20 F30 LCI 118i 318i B38 Engine Wiring Loom Harness Cables Set 8635811
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Porsche Macan 95B Tyre Pressure Control Unit Module 7PP907273H
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Mercedes ML W163 Module SAM Electronics Control Unit A1635457032
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Audi S3 8Y 2.0 TFSI DNFF Petrol Engine Sound Noise Actuator 4H0907601E
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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 .