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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Volkswagen Golf CD1 Park Parking Assist PDC Distance Control Module 5R3919294
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Mercedes W205 Alternator 14V/200A Valeo Diesel Engine M626 A0009063701
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BCM Module Audi Q7 4L A6 C7 A8 4H Body Control Unit ECU 4L0919475A
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Mercedes W204 Navigation Radio CD Player Head Unit A2049007202
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Audi A3 8P 1.6 MPI Petrol Starter Motor Engine 02T911023M
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BMW E81 E82 X1 E84 E87 E90 E91 E92 Power Distribution Box 6971370
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BMW Z4 E89 Central Information Display Dash Screen Navigation Monitor 9282022
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Mini Cooper R56 LCI N16 1.6 Petrol Engine ECU Kit DME 7607685 + CAS 3 + Key
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Mercedes W204 W207 Fuse Box Prefuse Box Module Relay Holder A2075402550
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VW Volkswagen Touareg 7L Radio Player Navigation Sat Nav Head Unit 7L6035191R
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Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023L
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Audi Q2 GA Online Services Control Module ECU Unit 2GA035284B
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BMW E93 Convertible Hall Sensor Trunk Boot Control Unit Module 6958127
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Audi TT FV Air Module ECU Control Unit Crash Sensor 5Q0959655P
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Mercedes SLK R171 Door Module Front Left N/S Control Unit ECU A1718207126
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BMW X3 Series E83 2.5i 3.0i M54 Automatic Gearbox Wiring Loom Harness 3412238
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BMW Mini Cooper S R52 R53 Gearbox Basic Control Unit EGS 7524695
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Volkswagen VW Golf Mk7 Negative Battery Terminal Cable Wiring 5Q0915181G
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Mini Cooper S R56 LCI N18 184HP ECU Kit Control Unit DME 7613226 CAS Key Manual
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Mercedes SLK R172 Rear SAM Fuse Relay Box Control Unit Module A1729060205
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Audi A6 C8 A7 4K A8 D4 Alternator Generator 4N1903028A
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PDC Module Mercedes W176 W246 Parking Assist Distance Control Unit A0009003210
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Audi Q7 4L ECU Air Module Control Unit Crash Impact Sensor 4L0910655B
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BMW Mini Cooper One R50 DME Petrol Engine Control Unit ECU Automatic 7514587
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Seat Leon Mk2 1P USB AUX Port Socket Connection Media Adapter 1P0035726A
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VW Volkswagen LT 35 Immobilizer Control Unit Module Temic 2D0953257
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Wiring Harness Mercedes Vito W639 Boot Tailgate License Plate Lamp A6394401613
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Communication Module Mercedes W205 W213 C253 Hermes LTE Control Unit A2389007704
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BMW F20 F22 F30 F32 REM Rear Electronic Module Fuse Box Control Unit V5 9866982
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Volkswagen Golf Mk7 Gateway Control Unit Module 5Q0907530L
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Audi A1 8X BCM Body Control Module Power Supply Unit 8X0907063AB
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Audi S3 8P Interface Bluetooth Control Module Harman Becker ECU 8P0862335S
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Mini Cooper R50 R52 R53 W10 W11 1.6 Petrol Bosch Engine Starter Motor 0986018830
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Mercedes W212 SAM Module Control Unit Electrical Fuse Box Unit A2129007104
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Seat Ibiza 6J Door Wiring Rear Right O/S Harness Loom Cable 6J4971161M
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Volkswagen Sharan 7N Fuse Box Module Comfort BCM Control Unit ECU 5K0937084J
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Audi Q7 4L Headlight Module Ballast Control Unit 89393773
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Mercedes R171 Air Module SRS Control Unit Crash Sensor ECU A1718207326
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Mercedes W639 116 CDI 651.940 163HP Engine Module ECU Kit A6519009302 Key Lock
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BMW E91 LCI ECU Footwell Light Module FRM3R Lear Led Basis 9263800
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BMW F40 F45 X1 F48 Mini F55 F56 Control Unit SAS Module ECU 9505275
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Mercedes Vito W639 Diesel OM646.980 Engine Control Unit Module ECU A6461502634
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Peugeot Partner Citroen Berlingo Mk2 Wiring Cable Loom Diesel Engine 9803029180
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Mini Cooper D ALL4 R60 N47N 112HP 1.6 Engine ECU Kit DDE 8519663 Manual
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BMW F20 F21 F30 F31 N55 326HP M135i 335i Engine Control ECU DME 8616314 Manual
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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 .