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 W169 200CDI OM640.941 140 HP Engine Module ECU Kit A6401502579 Key Lock
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Mini Cooper R57 PL3 SPEG H4 Fuse Distribution Box 3456911
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Mercedes W203 Fuse Box SAM Control Unit Module Relay A2035454501
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Audi TT FV 2.0 TFSI CHHC HV Battery Power Central Distribution Point 8S0915459A
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Mercedes SLK R171 Front Air Module SRS Control Unit ECU A1718204126
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Mini Cooper F54 F56 F60 JCW B48E 306HP Engine ECU Kit DME 5A4C367 BDC Key
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BMW X4 F25 F36 F85 F15 Shark Roof Fin Antenna Aerial Module Unit 9291486
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Mercedes ML W163 Stability Controller 4ESP Unit Module ECU A1635458032
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Engine Wiring Mercedes W212 Diesel OM651 Cable Loom Harness A6511505933
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Mercedes W204 Radio Player COMAND Navi CD Head Unit A2048700196
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BMW F20 F21 F30 F31 Air Module Control Unit ECU 9348726 0285012518
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Audi TT 8N 1.8T AUQ 180HP Petrol Engine Control Unit ECU 8N0906018CN Automatic
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Starter Motor Mercedes W204 W212 W639 OM651 Diesel Engine DENSO A6519060026
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BMW X5 E70 Alternator Generator Engine Unit Valeo 220A 14V 7801124
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BMW E60 E90 E91 E92 LCI 335D 535d M57N2 Engine ECU KIT DDE 7809955 + CAS3 + Key
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Mini Cooper F54 F55 136HP Petrol B38 Engine ECU Kit DME 8654460 + BDC + Key
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BMW Z4 Series E89 Cabrio Roadster Radio Antenna Mast Aerial FM Bumper 9123994
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Positive Cable Mercedes W906 OM651 Battery Starter Alternator Plus A9065403527
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Land Rover Range Rover L322 3.0d M57 Engine Alternator Generator YLE000051
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Audi A4 B8 PDC Assistance Parking Distance Control Module Unit ECU 8K0919475J
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Parking Sensor Mercedes W169 Front Bumper Distance Parktronic Horizon Blue 391
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Mercedes ML W164 W251 SAM Module Control Unit ECU A1649004600
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Mercedes W907 314 CDI Engine Alternator Generator Valeo A6519065700
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Audio Module Mercedes C238 Premium Sound E Control Unit A0009000518
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Mercedes W166 Tailgate Control Module Unit A1669006311
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Mercedes C117 W176 45 AMG 133.980 Engine Control Unit ECU A2709002100 Automatic
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Mini R50 R52 R53 6-Disc CD Changer Multichanger with Magazine 6946989
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Audi TT FV Front Camera Module Lane Assist Control Unit 5Q0980653G
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Mercedes SLK R171 Roadster Soft Top Folding Roof Control Module A1718204926
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BMW X5 E70 Navigation System CCC CD Player Sat Nav Head Unit 9147618
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BMW F40 ACSM5 Control Unit Air Module ECU Control Module 5A656B7
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Mini Cooper R55 R56 R57 Cable Wiring Set HiFi Electrical System 9211323
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Audi A6 C6 Antenna Amplifier Control Unit Module ECU 4F9035225H
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BMW F10 F20 F30 Control Unit For Fuel Pump Module 7411595
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Mercedes-Benz A-Class W169 CD Player Radio Stereo Head Unit A1698700289
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BMW 5 Series F10 Light Control Footwell Module ECU Unit FRM3 9250454
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Mercedes W212 E200 BlueEFFICIENCY M271.860 184HP Engine ECU A2711500391
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Display Screen Peugeot Partner Expert Multifunction Dashboard Clock 9665614680
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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 .