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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BMW E81 E82 E87 LCI E88 N47S 123d ECU Kit DDE 7811702 + CAS3 + Key Automatic
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Audi TT FV Impact Body Sound Accoustic Control Module ECU 8S0907159
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Head Unit Mercedes CLA C118 W907 Sat Nav Radio Media Player Unit A2479006213
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BMW E81 E87 LCI E90 116i 316i 1.6 N45N ECU Control Unit DME 7567321 Manual
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Audi A3 8P Body Control Comfort Unit Module BCM Unit ECU 8P0907063N
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Engine Starter Motor BMW X5 E70 LCI F01 N57 Diesel Starter Actuator 8515900
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Engine Control Unit BMW F20 F30 F31 118d 318d N47N 143HP ECU DDE 8582280 Manual
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BMW X3 E83 Z4 E85 E86 Radio Sat Nav Control Unit CD Player Control Unit 9146714
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BMW F20 F21 LCI 116d Diesel B37 B37D15A 116HP Engine ECU DDE 8475350 Manual
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BMW F30 Display Central Information Screen 8,8" Navigation Professional 9252004
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Audi A4 B8 A5 8T MMI Multimedia Interface Control Unit Module 4E0035785D
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BMW X5 Series E53 3.0d M57N 218HP ECU Kit DDE 7800131 EWS3 + Key Automatic
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Mercedes W176 W246 Power Relay Control Module 5 Pin 12V A0009828323 Set X2
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BMW F10 F11 LCI Active Sound Unit Control Module Design Amplifier 9289971
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Audi A6 C6 Electric Parking Brake ECU Control Unit Module 4F0910801D
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BMW E87 LCI E90 120i 320i N43 170HP ECU Kit Engine DME 7580279 CAS3 Key Manual
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Audi Q3 S Line Multimedia Radio Sat Nav Screen Display Head Unit 8U0857273E
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Mercedes W211 Alternator Generator A0121549802
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BMW E81 E87 E90 Hands-Free Electronics Charging Module MULF 6938943
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BMW X3 F25 20dX Diesel B47 190HP Engine Module ECU Kit DDE 8598806 Key CAS4
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BMW F20 F21 F22 F30 F32 LCI B47 Diesel Starter Motor Engine 8570846
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Mercedes W204 Navigation CD Player COMAND Radio Sat Nav Head Unit A2049005903
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Audi A1 8X Fuse Relay Box Electrical Control Unit Module 8X0937124
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Mercedes W251 R 320 CDI 642.950 224HP Engine ECU Kit A6421506434 Keys Lock
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BMW 5 Series E60 E61 Centre Console DSC PDC Switch Center Cluster 6938310
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BMW F20 F21 LCI M140i B58 Petrol ECU Control Unit Module DDE 8689723 Manual
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Radio CD Player VW Volkswagen Caddy 2K Touran Head Unit 1K0057186AN
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Mini R55 Footwell Light Module Control Unit ECU PL3 FRM II High EKS 3455701
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Mercedes W176 W246 Comfort Module Central Gateway Control Unit VST A1769001101
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VW Volkswagen LT 35 2.5 TDI AVR 109HP Engine ECU Kit 074906018BK Manual Gearbox
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Alternator BMW G11 G12 LCI G20 G21 G30 G31 Alternator 250A Denso 8634167
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Porsche Cayenne 9PA Front Bumper PDC Park Sensor Wiring Harness 7L5971095J
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Gateway Module BMW F10 F11 Central Control Unit Lear ZGW-01 High 9236462
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Audi Q5 8R Reversing Camera ECU Control Unit Module 8R0907441A
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Mercedes Sprinter W906 Fuse Prefuse Box Relay Electrical Unit A0045450201
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BMW 5 Series E39 Left N/S Air Box Pollen Microfilter Service Cover 8379627
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Mercedes SL63 R231 Roadster Fuse Box Passenger Footwell Fuse Box A2315401050
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Land Rover Freelander 2 Yaw Rate Sensor 6G9N-14B296-AB
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Volkswagen VW Phaeton 3D Fuse Box Electrical Control Unit Module 3D0937499B
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BMW F33 Driver Side Seat Wiring Loom Electric Harness 9352158
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BMW E60 E61 E63 E85 Air Module Control Unit Module ECU ACSM 9172018
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VW TOURAN 1T Steering Angle Steering Wheel Column Control Module ECU 1K0953549AF
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Volkswagen Golf 5 1K 2.0 TDI BMN 170HP Engine ECU Kit 03G906018FC 2 Key Ignition
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Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023
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Air Bag Module BMW E65 E66 Control Unit ECU Gateway Airbag Lear 6960943
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Mercedes W169 W245 Radio Player Audio 20 Stereo CD Head Unit Display A1698706094
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ICM Module BMW F07 GT F01 F02 F03 F04 Air Module Control Unit ECU 9266328
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Mini Convertible Cabrio R52 Amplifier Speakers Audio Hifi Harman Kardon 6959011
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Wiring BMW X3 F25 Automatic Gearbox Module Engine Wiring Harness 7811176
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Mercedes Vito W639 Door Module Front Left N/S Control Unit ECU A6399003100
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Audi A4 B9 Front Door Module Control Unit ECU Passenger Side 8W0959592N
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BMW E60 E61 E63 Control Unit Gateway Module ECU 6975686
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VW Volkswagen Golf 6 Gateway Control Unit Module ECU 7N0907530C
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VW Volkswagen Golf 1K 2.0 TFSI BWA Starter Motor 02M911023G
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MINI Cooper S R52 R53 W11 170HP Engine Control Unit ECU DME 7557395 Automatic
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Fuse Box MINI R56 LCI Cooper One PL3 SPEG H5 Distribution Control Unit 3456852
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Communication Module BMW M4 F82 Telematic Bluetooth Control Unit 8734753
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BMW E90 E91 LCI N47N 320d 163HP Engine ECU KIT DDE 8510829 + CAS3 + Key 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 .