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 W168 ESP + HBA Electronic Stability Program Control Module A1685453532
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Parking Sensor Mercedes W169 W245 PDC Distance Control Unit Module A1699007400
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Fuse Box Mercedes W211 CLS C219 Front SAM Control Unit Module A2115457701
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Starter BMW G20 G21 G30 G31 G01 Engine Starter Motor 8671504
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Mercedes Sprinter W910 314 CDI OM651.958 143HP Engine ECU Kit A6519003603 Manual
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BMW F20 F21 F31 F32 F87 Body Control Comfort Module Unit BCM 8733501
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BMW 3 Series E87 Max Brose Footwell Light Module Control Unit ECU 9340339
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BMW G20 Axle Differential Module Control Unit ECU 5A11E72
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Mercedes W221 Fuse Box Control Unit SAM Module Relay A2215403250
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VW Volkswagen Golf 6 Seat Altea 5P1 Gateway Control Unit Module ECU 7N0907530R
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Audi A3 8P 1.6 TDI 5 Speed Manual Diesel Engine Starter Motor 02Z911024A
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Mercedes W205 W213 Ignition Central Lock Control Unit Module ECU A2139005528
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Audi Q7 4L Positive Battery Terminal Cable 4L0971225D
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Mercedes W212 E350 CDI OM642.850 Engine Control Unit Module ECU A6429002900
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Audi TT 8J Radio Head Unit CD Audio Player Control Unit 8J0035186J
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Peugeot 3008 PDC Module Parking Distance Control Unit ECU 9666663780
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Mercedes W221 S500 Audio Amplifier Sound System Control Module A2218205289
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Ford Transit Heat Shield Insulation Alternator Engine Cover CC11-199049-AA
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Mercedes GLC C253 X253 Pedestrian Protection Pressure Crash Sensor A2539052100
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BMW E38 E39 Basic Control Unit Module ABS ASC Computer ECU 1164130
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Renault Trafic II Opel Vivaro A 2.0 DCI Alternator Bracket Mount 8200527320
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COMAND Head Unit Mercedes CLA C117 W176 W246 Nav Sat Radio Player A2469000616
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Audi A4 A5 A6 Q5 Q7 Radio Control Head Unit Harman Becker 4F0035053B
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VW Volkswagen LT 35 Immobilizer Control Unit Module Temic 2D0953257
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Audi A4 B7 Petrol Engine Alternator Generator Electric Unit 14V 140A 06B903016AB
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BMW F20 F21 F30 116d 120d 316d 320d N47N Wiring Harness Engine Module 8586141
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BMW 3 X3 X5 Series E46 E53 E83 Telematics Bluetooth Control Unit Module 6963758
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Mercedes W169 SAM Module Control Fuse Box Unit A1695405645
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BMW F40 ACSM5 Control Unit Air Module ECU Control Module 5A656B7
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Audi A3 S3 8P Radio Media GPS Sat Audi Navigation Plus Unit 8P0035192H
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SAM Module Mercedes W204 Control Unit Electrical Fuse Box Unit A2049005201
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BMW E31 E32 E34 E34 E39 Petrol Engine Starter Motor 1729982
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Alternator Generator Mercedes W213 C238 C253 OM656 Engine Valeo 250A A0009064508
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Opel Vivaro B 1.6 CDTI Alternator Generator 150A 95519888
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BMW F01 LCI Facelift Footwell Module Unit LED TEMIC FRM III 9285930
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BMW 3 5 7 Series E30 E34 E36 E38 E46 Petrol Engine Starter Motor 2354709
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BMW G20 Radio Audio Amplifier Remote Receiver Control Module Unit 5A4CE55
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Mercedes W164 Gateway Control Unit Gateway Module ECU A1645403462
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Audi A6 C6 FL CAGB Diesel Engine Alternator Generator Bosch 14V 180A 03G903016L
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Mercedes-Benz C-Class W203 CD Player Audio Stereo Radio Head Unit A2038201786
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Mercedes CLK C209 Rear Body Control Module Unit BCM ECU A2098205226
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BMW X3 E83 Fuse Grouping Front Stick-on Label Diagram 9267980
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BMW E46 Petrol Engine Starter Motor 1,4kW 7505979
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BMW 3 X5 Series E46 E53 3.0d Diesel M57 Alternator Generator 150A 2248296
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Audi TT 8J Volkswagen Golf Mk5 Gateway Control Unit Module ECU 1K0907530L
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Audi A3 8P Side Air Module Control Unit ECU 8P0959655N
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Engine Starter BMW F20 F21 F22 F30 F32 N47N Diesel Motor Bosch
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BMW 1 Series E87 1 ECU Body Control Module Junction Box H2 PL2 JBBFE II 9160189
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BMW F20 F30 LCI Harman Head Unit High 2 Media Sat Nav Radio NBT EVO HU 6822066
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BMW F20 F21 LCI F30 150HP 118d 318d B47 Engine Unit ECU DDE Set 8587952 Manual
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Mercedes W207 W212 Head Unit CD Player Radio Navigation Controller A2129006417
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Starter Mercedes Sprinter W906 Diesel Engine Starter Motor Valeo A0061517401
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BMW G20 Reverse Rear View Camera 5A63731
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Audi A4 B9 A5 F5 Alternator Generator Valeo 2.0 TFSI DDWA 06L903018H
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GM Vauxhall Opel Relay 4-Pin Glow Plug Unit Black Tyco 90464760
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BMW 3 5 7 Series E36 E38 E39 Key Transmitter Receiver Module Unit 8379502
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Mercedes W168 OM668 Diesel Alternator Generator A6681540102
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BMW 3 Series E90 320si 173HP DME 7560955 Petrol N45 ECU Kit CAS2 + Key Manual
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Ford Focus MK2 Mondeo MK4 1.8 TDCI Glow Plug Wiring Loom Cable Wire 4M5Q6M091AB
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BMW 1 Series F20 F21 LCI Antenna Aerial Noise Suppression Filter 9227470
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BMW E60 E90 N52 325i 525i ECU Kit Control Unit DME 7577968 CAS2 Key Automatic
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Trunk Lid Module BMW F31 F15 F16 F36 Control Unit Rear Tailgate Lift 7314798
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Engine Wiring Mercedes Vito W447 OM651 Engine Harness Cable A4474404705
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Audi A3 8V Fuse Box Control Module Relay Box 5Q0907361C
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Mercedes CLS W219 Door Module Front Left N/S Control Unit Module A2198202326
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BMW E39 525d 530d E53 3.0d M57 Basic DDE Control Unit DDE 7790220 Automatic
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Mini Cooper S R52 R53 W11 170HP Engine ECU Kit DME 7545789 + EWS + Key Manual
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Mercedes W204 C200CDI BlueEFFICIENCY OM651.913 Engine ECU Kit A6511500126 Key
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Peugeot 307 Citroen Berlingo C4 Glow Plug Wiring Loom Cable Wire 9657700780
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Audi A5 F5 45 TFSI QUATTRO Starter Motor Engine Denso 06H911024C
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BMW E39 E46 E53 Radio BMW Professional TMC 65128385897 8385897
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Antenna Amplifier Mercedes CLS C219 Pillar C Left N/S Aerial Module A2198200089
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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 .