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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Navigation Screen Mercedes W212 1 Head Unit Sat Nav Center Display A2129005000
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Audi A4 B8 Parking Brake Control Module Unit ECU 8K0907801K
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Audi A6 C6 Battery Positive Plus Pole Terminal Lead Overload 4F0915459
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BMW 1 3 Series 3 E60 E87 E90 M47N2 120d 320d DDE Engine Control Unit ECU 7801711
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BMW E65 E66 Dashboard Control Display Screen 8,8" 6986301 9137123
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Mini Cooper D R60 R61 ALL4 N47N 2.0 143HP Engine ECU Kit DDE 8583423 CAS3 Key
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Volkswagen Beetle 5C Fuse Box Relay Module Unit 5C0937819R
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Audi Q5 8R Negative Battery Terminal Cable Wiring Battery 8R0915181C
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Mercedes SLK R172 Fuse Box Relay Control Unit SAM Module A2129009425
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BMW E81 E87 E90 E92 Comfort Access Passive Go Control Unit Module 6987184
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BCM Module Audi Q7 4L A6 C7 A8 4H Body Control Unit ECU 4L0919475A
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Audi A3 8P Gateway Interface Onboard Supply Control Module Unit ECU 8P0907279P
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Ford B-Max Dashboard Display Multifunction Screen Monitor C1BT-18B955-BD
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Audi Q5 FY Top Sunroof Opener Control Module Unit ECU 4M0907594J
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BMW F32 F33 430d N57N 258HP Engine ECU DDE Kit 8577839 FEM + Key Automatic
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Mercedes CL203 CLC Head Unit CD Player Radio Audio Controller Unit A2038703594
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Audi A3 8V Negative Battery Terminal Cable Harness Wiring Loom 5Q0915181H
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BMW Z4 E89 Body Control Module H3 Junction Box ECU 9229880
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£BMW E92 E93 330d M57N2 231HP Engine ECU Kit DDE 7805286 + CAS3 + Key Automatic
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Mercedes C219 CLS 320 642.920 224HP Engine Unit ECU Kit A6421503972 Key Lock
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BMW E60 Light Control Module Unit Lear LMF6X 9116260
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Mercedes W906 313 CDI OM651.955 129HP Diesel Engine ECU Kit A6519003203 Manual
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Mercedes C253 Fuel Pump Module Control Unit ECU A0009002218
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Mini Cooper R50 R52 W10 1.6 Petrol Engine Control Unit ECU DME 7557395 Manual
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BMW E93 Cabrio ECU Body Control Module H3 Junction Box 9177985
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Mini Cooper S R55 R56 R57 LCI N18 1.6 184HP ECU Control Unit DME 7613226 Manual
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BMW F20 F30 116i 316i N13 136HP Engine ECU Module DME 7636292 Manual
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Audi VW Volkswagen Seat Relay Unit Module 9 Pins 12V UH2 4B0955531A
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Mercedes SLK R171 Stereo Radio CD Player Head Unit A1718200386
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BMW X1 E84 18dX Diesel N47N Engine Unit ECU Kit DDE 8574351 CAS3 Key Automatic
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BMW 1 3 Series E81 E87 E90 E91 LCI N47 Diesel ECU DDE engine control 8506375
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Seat Leon Mk2 1P Central Gateway Control Unit Module Relay ECU 7N0907530M
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BMW E64 E85 Sensor B Pillar Air Module Right O/S 6940300
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BMW F20 F21 F22 F30 F31 Alpine Cd Radio Player Head Unit 9271715
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BMW X1 E84 20dX N47 177HP Engine Control ECU Kit DDE 8512498 Automatic
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Door Module Audi A3 8V VW Golf 7 Seat Leon 3 Front Right O/S 5Q0959592D
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BMW X5 X6 Series E70 E71 Board Monitor Sat Nav System Screen 8,8" 9146651
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BMW E60 E61 Driver's Side Door Air Module Control Unit Module 6976157
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BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 7823973 CAS3 + Key
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Air Module BMW G30 G31 X3 G01 X4 G02 SRS Control Unit ECU 9474810
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BMW F10 LCI Light Control Footwell Module ECU Unit FRM3 9345374
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Mercedes R231 Seat Control Unit Module Driver A2319003606
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Audi A3 8P Multimedia Stereo Sat Nav CD Player Radio Head Unit 8P0057186SX
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BMW E90 E91 LCI N47N 318d 143HP Engine ECU Kit DDE 8510832 CAS3 + Key Manual
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Alternator Mercedes W204 W212 Diesel Engine OM651 Valeo 180A A0009067900
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Audi A3 8P Stereo Radio Audio CD Player Head Unit 8P0035152E
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Mercedes SLK R172 Airbag Module SRS Control Unit ECU A1729015805
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Seat Ibiza IV Multimedia Radio Sat Nav CD Player Head Unit 5QA035858A
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Mercedes ML W163 Window Windscreen Rain Light Sensor Module A1638200726
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BMW 3 Series E46 Drive Window Lifter Motor Rear Right Door O/S 8362065
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BMW 5 6 Series E60 E61 E63 E64 1 Power Distribution Fuse Relay Box Rear 6956505
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Renault Trafic 3 R9M 450 1.6 DCI Diesel Engine Unit ECU 237103984R Manual
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Volkswagen Golf MK6 Parking Sensor Wiring Rear Bumper Loom Cable 03L972619BA
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Mini Cooper One R50 R52 R53 Radio Boost CD Player Unit Head 9115661
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BMW 3 4 Series F30 F31 F32 Front Bumper PDC Wiring Cable Loom Set 9260019
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Mini F55 Petrol Engine ECU Control Module Unit 6821977
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Smart ForTwo C453 Vauxhall Vivaro Mk2 BCM Body Control Module Unit 284B12763R
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Mercedes W176 Front Pressure Impact Crash Sensor Unit Module
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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 .