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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Audi SQ5 8R 3.0 TDI CGQB Diesel Engine Alternator Generator 059903018Q
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Mercedes W204 Display Screen Multimedia Navigation Dashboard Unit A1729008600
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Chrysler Voyager 2.8 CRD ENR Engine Alternator Generator 4868429AD
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Yaw Sensor Mercedes W210 W220 ESP Rotation Rate Control Unit Module A0015429018
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Audi Q7 4L 3.0 TDI Automatic Gearbox Module Control Unit ECU Diesel 0C8927750AL
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BMW F31 F34 328i N20 245HP Engine Control Unit Module ECU DME 8610635 Automatic
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Mini Cooper R56 ECU Footwell Light Module Unit AHL EKS PL3 FRM3R Lear 3456393
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Door Module Mercedes W906 Front Door Right O/S Control Module A9068205626
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Audi Seat Skoda Volkswagen 1.4 TSI Petrol Alternator Generator 110A 03C903023G
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Mercedes W204 Fuse Box Relay Control Unit Electric Module SAM A2045454501
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BMW F20 F22 F30 F32 REM Rear Electronic Module Fuse Box Control Unit V5 6317177
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Mercedes W204 Front Fuse Box Relay Control Unit SAM Module A2129005622
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Audi A4 B7 Body Comfort Control Module BCM Unit ECU 8H0959433M
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Mini Cooper S R56 N14 1.6 174HP ECU Kit DME 7641003 + CAS3 + 2 Keys Manual
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Mercedes Vito W639 Suspension Level Control Unit Module ECU A6394460317
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Audi Q7 4L 3.0 TDI CASA Quattro 240HP Engine Contol ECU Set 4L0910401G Automatic
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Mercedes W639 W906 W907 OM642 Diesel Engine Alternator Generator A0009062700
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BMW X5 E53 Fuse Box Label Trim Cover Panel Sticker 6920035
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BMW E60 E61 LCI 520d N47 Diesel Engine Control Unit ECU DDE 7812500 Manual
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BMW Z4 Series E85 Sensor B-Pillar Airbag Right O/S 6933988
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Mercedes W205 W238 Fuse Box Cover Control Unit Holder Bracket A2055400840
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BMW E90 E91 E92 335i 306HP Engine N54 ECU Kit DME 7575875 + CAS3 + Key Automatic
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Audi Q2 GA Air Module Control Unit 5QF959655BQ
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BMW F01 730d N57 245HP Engine Control Unit ECU Module DDE 8516753 Automatic
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Audi A4 B9 2.0 TFSI CVKB 190HP Engine Control Unit ECU 06L907309A Automatic
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Audi TT FV Air Module ECU Control Unit Crash Sensor 5Q0959655P
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Mini Cooper One R56 Footwell Light Module Low EKS ECU PL3 FRM3R 3455895
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Mercedes CLK C209 Rear Body Control Module Unit BCM ECU A2098205226
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BMW E90 E91 LCI N47N 318d 143HP Engine ECU Kit DDE CAS3 + Key 8512047 Automatic
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Volkswagen Golf VII R 2.0TSI CJXC 300HP Engine Control ECU Kit 06K907425B Manual
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Mercedes W203 Parktronic Parking Sensor Warning Display Screen A2095452432
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BMW E81 E87 E90 E91 E92 6-disc CD Changer With Magazine 6977759
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Mercedes W204 Battery Fuse Box Positive Distribution Terminal A2075401550
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BMW Z4 Series E89 Front Bumper PDC Loom Cables Wiring Set 9225771
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Audi Q7 4L ECU Air Module Control Unit Crash Impact Sensor 4L0910655B
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BMW E60 Light Control Module Unit Lear LM II E6X LWR LCM 9137775
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Wiring Harness Opel Vivaro B Renault Trafic 3 Loom Cable 93455434
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BMW Z4 E89 Body Control Module H3 Junction Box ECU 9229880
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BMW 1 2 3 4 Series F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9315685
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BMW F22 F23 Active Front Bumper Sensor Pedestrian Protection Unit 9196020
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Audi A6 C6 Diagnostic Interface Gateway Module ECU Control Unit 4F0907468M
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BMW F20 F30 F31 LCI 118i 318i B38 ECU Basic DME Control Unit 8663284 Manual
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Audi Q3 8U Sat Navi Stereo Radio Audio Head Unit CD Player 8U1035192A
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Mercedes W204 Navigation CD Player Radio Stereo Sat Nav Head Unit A2049069801
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BMW X3 E83 Z4 E85 E86 Radio Business CD Player Multimedia Unit 9197127
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Audi Q5 FY Rear Door Wiring Harness Loom Cable Left Right N/O/S 80A971687H
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BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9298961
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BMW E46 M3 343HP Engine S54 Control Unit Module ECU DME Manual 7833284
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VW Volkswagen Polo Gti 6R Golf Mk7 Alternator Generator 14V 140A 6J903023G
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Body Control Module BMW X3 F25 ECU Junction Box JBBFE III 3 Lear 9304587
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Audi A3 8V 1.6 TDI CLHA 105HP Engine Unit ECU Kit 04L907309B Key Ignition
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Body Control BMW F22 F23 F30 F32 F33 F36 BCM Module Unit ECU 9868384
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AUDI A8 4E S8 D3 CD Changer Control Module 6 CD unit 4E0057110C
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BMW E87 ECU Junction Box Body Control Module Unit H2 PL2 JBBFE 6971960
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Mercedes W212 E63 AMG Drive Unit Extended Control Module ECU A0009009903
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Mercedes-Benz A B W176 W246 Engine Temperature Sensor Wiring Cable Harness
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VW Volkswagen Touran Body Control Comfort Unit Module BCM 3C8937049D
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Audi A5 8T Display Screen Dashboard Multifunction Monitor Unit 8T0919604A
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BMW 1 Series E87 LCI ECU Body Control Module Unit H2 PL2RR JBBFE IIIR 9227184
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Mercedes W639 Automatic Gearbox Control Unit Module ECU A0005458416
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BMW F25 F26 F15 F16 Audio Amplifier Harman Kardon Surround Sound System 9393182
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Volkswagen VW Golf Mk7 Negative Battery Terminal Cable Wiring 5Q0915181G
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BMW F10 F20 LCI F30 B47 Diesel Alternator Generator Denso 210A 7646814
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Mercedes CL203 Fuse Box Control Unit Module SAM A2035454901
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Mercedes W212 Audio 20 CD Player Audio Stereo Radio Head Unit A2129005010
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CD Player BMW E81 E82 E87 E88 E90 E91 E92 Radio Professional Head Unit 9258167
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BMW F07 GT F10 F11 Hands Free Telephone Microphone Black 9181411
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Mercedes W207 A207 SAM Control Unit Module Fuse Box Rear A2129004222
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BMW 1 3 Series E87 LCI E90 118d 318d N47 Diesel ECU KIT DDE 7809001 + CAS3 Key
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Peugeot 207 CD Player Radio Stereo Head Unit 96643697XT00
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Mercedes W906 313 CDI OM651.955 129HP Diesel Engine ECU Kit A6519000700 Key Lock
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BMW E81 E87 E90 MULF Hands-free Electronics Charging Module 9200821
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BMW X3 X5 Series E83 E53 Telematics Control Unit Module 9129850
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Mercedes W164 OM629 Diesel Engine Motor Wiring Loom Cable Harness A6291501933
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BMW E60 E61 E90 E91 On-board Navigation Display Monitor Screen 6,5" 9179808
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Mini Cooper R56 LCI R60 N16 122HP Engine Control Unit Module ECU DME 8600124
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Audi Q5 8R 2.0 TDI Quattro Alternator Generator 03L903017B
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BMW F10 Touch Detection Module Steering Wheel Control Unit HOD F45 i3 6867308
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BMW E81 E82 E87 LCI E90 Radio Business CD Player Unit 9210510
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Mercedes SLK R171 Roadster Fuse Box Control Unit SAM Module Relay A1715451301
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Rain Sensor Mercedes W204 W212 Light Solar Condensation Control Unit A2079012200
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Citroen Berlingo Peugeot Partner Body Control Module BSI Unit 967847688001
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Audi A4 B9 Front Door Control Module Unit Driver's Side 8W0959593E
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Battery Starter Wiring Mercedes W176 W246 Harness Cable Positive A2465407932
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Display Screen Mercedes W176 W246 Radio Navigation Sat Nav Head Unit A2469013702
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BMW 3 Z4 Series E46 E89 Mini R50 R52 Parking Control Module Unit PDC 6985501
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Volkswagen New Beetle Earth Ground Cable Negative Battery Lead Wiring 1C0971235A
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BMW X5 E53 3.0i Petrol M54 Alternator Valeo 140A 7551252
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BMW Z4 E85 E86 Basic Body Control Unit Module GM5 Star12 LOW 9116445
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Mercedes W169 W245 W639 W906 Head Unit Radio Media Player Navigation A1699002500
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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 .