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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Skoda Yeti 5L BCM Body Control Onboard Supply Module Unit ECU 1K0937086AA
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BMW F20 125d F30 325d LCI F32 425d B47 224HP Engine Control Unit ECU DDE 8596363
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BMW G20 320i Telematic Control 1D Comunication Module Unit ECU 9878206
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BMW E92 Footwell Light Module ECU Control Unit LED XE PL2 FRM II Lear 9204536
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Seat Ibiza 6J Steering Wheel Air Module Driver's Side Black 6J0880201AJ
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Fuse Box Cover Mercedes W203 W209 Battery Terminal Housing Trim Cap A2035451003
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Volkswagen Golf CD1 Front Door Right O/S Loom Wiring Cable Harness 5H4971162MP
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BMW F20 F30 116i 316i N13 136HP Engine ECU KIT DME 7636292 + FEM + Keys + Lock
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Mercedes SLK R171 Stereo Radio CD Player Head Unit A1718200386
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Junction Point BMW X5 F15 X6 F16 B + Battery Power Distributor 6826201
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BMW F12 F13 LCI F06 Gran Coupe Amplifier Hifi System Sound System Module 9312596
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BMW F20 F21 F30 116d 316d N47N 116HP ECU Kit DDE 8573258 + Key + FEM Manual
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BMW E60 LCI 525i E90 E91 325i N53 Engine Control Unit ECU DME 7586940 Automatic
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Audi A5 F5 2.0 TDI DEZE Adblue Control Module Unit ECU Assembly 4M0907355D
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Mercedes W212 Negative Battery Terminal Cable Wire A0009052802
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Mercedes-Benz S-Class W221 Dashboard Instrument Cluster Speedo Trim Cover Panel
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Renault Master 2 Display Digital Clock Control Unit Module Panel 8200107839A
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Mercedes W212 Screen Cable Wire Connector Monitor Display A2124405732
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Mercedes W209 M112 Positive Battery Cable Lead Alternator Starter A2095405110
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PDC Display Mercedes W639 Front Parking Sensor Screen Control Unit A0015422623
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BMW 3 5 Series E39 E46 Inclination Indicator Alarm Sensor Module 8367604
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Renault Scenic 3 III K9K 1.5 DCI Engine Control Unit ECU 237101495R Automatic
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Mercedes W166 Radio Sat Nav CD Multimedia Control Central Head Unit A1669005420
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Module BCM BMW F46 F48 F49 X1 Body Control Unit Module ECU 8736968
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Mercedes-Benz C-Class W204 Radio Control Function Button Knob A2048702058
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BMW F20 F30 F32 LCI 120i 320i 420i Petrol B48 184HP Engine ECU Unit DME 9894912
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BMW G30 530d B57 265HP Engine ECU Kit Unit DDE 8475476 BCM Key Automatic
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Skoda Octavia II Multimedia Head Unit Bolero Radio CD MP3 Player 1Z0035156F
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Seat Leon 5F Mk3 Air Module Control Unit ECU Module Sensor 3Q0959655BH
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Mini One R50 W10 90HP Engine ECU Kit DME 7545789 + EWS + Keys Manual
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Audi A4 B8 HV Battery Alternator Wiring Harness Loom Cable 8K2971228
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Mercedes W906 313 CDI OM646.985 109HP Engine ECU Unit Module A6461501877 Manual
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VDP Module BMW G30 G31 G32 Front Suspension Level Control Unit Module 6889577
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BMW 5 Series E60 E61 LCI 525d M57N2 Engine Wiring Loom Harness Manual 7796846
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Mercedes R171 SLK350 272.969 305HP Engine ECU Kit A2721531692 Key Lock Automatic
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Fuse Box Mini R58 R59 Distribution Control Unit Module 3457508
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Mercedes W205 C 220d 651.921 170HP ECU Kit A6519005203 SAM Key Lock Automatic
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BMW F10 Light Control Footwell Module ECU Unit FRM3 9247063
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BMW X3 E83 LCI 1.8sd 2.0sd N47 177HP Engine Control ECU DDE 7809999 Automatic
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BMW F10 F20 F30 Mini F55 F56 KaFAS Camera Front Control Unit Module ECU 6992830
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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 .