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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Mercedes W164 Door Module Front Right O/S Control Unit Module A1648207826
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Mercedes GLE W166 Wiring Harness Automatic Gearbox Cable Loom A1664403436
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BMW E81 E87 E90 Hands Free Electronics Charging Module MULF 6953044
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BMW 1 Series 1 E81 E87 Wiring Loom Set PDC Rear Complete Harness Parking Sensor
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Alternator Generator Mercedes W176 W246 OM651 Diesel Engine 175A A0009063322
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Citroen Relay 35L III Positive Battery Wiring Loom Harness Diesel 1388277080
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Engine Wiring Harness Mercedes R171 W203 C209 M271 Loom Cable A2711502933
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Mercedes GLE 250 AM Tailgate Trunk Control Module Unit A1669008512
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BMW 3 X3 Z4 Series 2 E46 E83 E85 Engine Electronics Unit Box 7534922
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Mini F55 BDC FCC BSI Fuse Box Power Distribution Control Module Unit ECU 5A402E9
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Audi RS3 8V 2.5 TFSI Quattro Starter Motor Battery Cable Wiring 8V0971228
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Mini F55 F56 Wiring Loom Harness Instrument Panel Dashboard Cable 8717408
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BMW E34 E36 E46 316i 318i 518i Ignition Coil Control Unit Module 1247281
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BMW F40 Telematics Control Module Unit TCU 5A872D1
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Ford Transit Connect Cable Alternator Starter Motor Battery Wiring FV6T-14A280
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Audi Q2 GA Rear Bumper PDC Parking Sensor Wiring Harness Loom 81A971104E
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Mercedes W168 A160 102HP Engine Control ECU Kit A0275454132 + 2 Keys Automatic
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BMW G30 G31 F90 M5 G11 Antenna Aerial Diversity Amplifier Unit 8735982
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Trunk Lid Module BMW F31 F15 F16 F36 Control Unit Rear Tailgate Lift 7314798
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Mercedes CLK W209 Automatic Gearbox EGS Control Unit Module ECU A0325452332
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Sensor Holder Mercedes W907 W910 Collision Warning Module Bracket A9108805600
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BMW 1 3 5 Series E60 E87 E90 CAS 3 ECU Control Unit Key Reading Module 9226238
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BMW E87 LCI E90 120i 320i N43 170HP ECU Engine Control Unit DME Manual Gearbox
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BMW 5 6 Series E60 E61 E63 E64 6-disc Compact CD Changer 6941416
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BMW Z4 E85 2.5i Engine M54 192HP ECU Kit DME 7527072 + EWS3 + Key Automatic
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Mercedes W221 S500 4-Matic M273.968 Engine Control Unit ECU Kit A2731536591 Key
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PDC Module Mercedes W176 W246 Parking Assist Distance Control Unit A0009003210
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Mercedes W204 C220 CDI 651.911 Engine Control Unit ECU A6519007500 Automatic
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BMW E81 E82 E87 LCI E88 N47S 123d 204HP Engine Unit ECU DDE Manual 7811702
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BMW 3 5 Series Mini Cooper E60 E93 R55 R56 R60 IBS Negative Battery Lead
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Volkswagen Golf 5 1K 2.0 TDI BMN 170HP Engine ECU Kit 03G906018FC 2 Key Ignition
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Nissan Qashqai Diesel Engine Control Unit ECU Module 23710 JD78D 0281014361
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Ford Transit Connect Negative Battery Terminal Cable Wiring 9T1T-14A280-MBC
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BMW X3 X5 E53 E83 EWS III Central Locking Immobilizer Module ECU 6934529
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Renault Trafic II F83 1.9 DCI F9Q 760 Engine ECU Kit 8200204836 Key Lock Manual
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Mercedes-Benz A B W176 W246 Left Right Seat Wiring Loom Harness A2465405901
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BMW 5 6 X3 X5 Series E53 E60 E61 E63 E83 1 Cigarette Lighter Socket 6973036
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Audi TT 8J 2.0 TDI 170HP CFGB Engine ECU Unit Kit 03L906018DT Manual
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Mercedes W221 S350 M272.965 272HP Engine ECU Kit A2721536979 Ignition + Key
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Audio Amplifier HiFi BMW E87 E90 Top Sound System Control Unit 9177752
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Mercedes Vito W639 Battery Terminal Fuse Box Control Unit Module A6395400050
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Mercedes W204 Navigation CD Player COMAND Radio Sat Nav Head Unit A2049005903
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Engine Wiring BMW F10 F31 F32 N20 Loom Module Harness Cable 7641652
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Volkswagen VW Passat B6 Fuse Box Relay Electrical Module Unit 3C0937125
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BMW 3 Series E90 E91 Front Right O/S Driver Side Door Wire Wiring Loom 6938210
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Mercedes W163 CL203 W203 Petrol Alternator Generator Valeo 120A A0111546402
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BMW X5 E60 E61 E63 E64 E70 Control Unit Module Passive Go 9134707
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Battery Lead BMW E81 E87 Battery Cable Negative IBS 9134855 61129134855
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Rain Sensor Mercedes SLK R172 W204 Front Windscreen Control Unit A2049017901
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Peugeot 207 1.6 HDI Alternator Supporting Bracket Mount Diesel 9657477580
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BMW F20 F21 F22 F30 F32 Front Electronic Module Control Unit FEM 9352865 Manual
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BMW F30 330e HV Accumulator Battery Clamp Pyro Fuse Auxiliary Connector 9343605
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Mercedes ML W164 Parktronic Parking Control Unit Module A1645453316
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Air Module BMW F20 F21 F30 F31 Control Unit 6826984 0285013630
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BMW F45 F46 F48 ECU Body Domain Controller BDC Control Unit Module 5A402E6
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BMW 7 Series E65 E66 N62 Starter Motor 1,8KW Petrol 7508637 7508635
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Mercedes W906 Door Module Front Left Right N/O/S Control Unit ECU A9069000501
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Reversing Camera Module BMW F10 F20 F30 Rear View Unit 9393953
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BMW X3 F25 Footwell Light Control Unit Module ECU FRM III TEMIC 6823594
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BMW F20 F21 M135i F30 F31 335i N55 Engine Control Unit ECU 8606776 Automatic
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Mercedes W906 313 CDI OM651.955 129HP Diesel Engine ECU A6519003203 Manual
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BMW F10 F11 LCI 520d B47 190HP Engine ECU Kit DDE 8591073 CAS4 Key Automatic
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Audio Amplifier BMW F40 G05 G20 G30 Top Hifi Harman Kardon Control Unit 9832609
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Mercedes W203 W221 Rain Light Sensor Control Module A2218700092
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BMW 6 Series E64 Aerial Antenna Amplifier Diversity DAB 6935048
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Mini Cooper R55 R56 R57 LCI Engine Wiring Harness Loom DDE 7823706
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Mercedes Sprinter W906 Battery Alternator Starter Wiring Harness A9064401241
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BMW 3 Series F30 F80 M3 Battery Cover Trunk Trim Panel Right Boot 7239175
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BMW X5 E70 E90 E91 LCI Control Unit Xenon Adaptive Headlight 7189311
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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 .