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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BMW 1 3 Series E81 E90 LCI Business System Car Infotaiment Computer CIC
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Mercedes W166 C292 Fuse Relay Box Cover Trim Panel Lid Housing A1665400224
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Mercedes-Benz W210 E 320 CDI Diesel Engine Control Unit Module ECU A6131530379
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Navigation Head Unit BMW E60 E61 CCC CD Sat Nav Player System Controller 9170702
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Audi A6 C6 Yaw ESP Rate Sensor Module Unit Control ECU 4F0907637A
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Mercedes CLK C209 Keyless Go Module ECU Entry Door Control Unit A2098202526
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Skoda Fabia 5J Roomster Body Comfort Module Control Unit 5J0959433A
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BMW 1 3 Series E81 E87 E90 E91 E92 6-disc CD Changer With Magazine 6958198
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Volkswagen Sharan 7N Fuse Box Module Comfort BCM Control Unit ECU 5K0937084J
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Mini Cooper R57 PL3 SPEG H4 Fuse Distribution Box 3456911
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BMW F20 Driver Side Door Cable Harness Wiring 9335291
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BMW 7 Series E65 E66 TV Function Video Module Control Unit Tuner 6933867
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BMW F30 F32 F36 335dX 435dX N57Z 313HP Engine ECU Unit Kit DDE 8578082 Key FEM
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Audi A4 B7 Petrol Engine Alternator Generator Electric Unit 14V 140A 06B903016AB
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Starter Motor Renault Trafic II Opel Vivaro A Diesel 2.5 dCi 8200106788
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Audi A5 8T Onboard Comfort Supply BCM Control Module Unit ECU 8K0907063DD
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BMW E38 Headlight Light Check Module Control Unit ECU Lear LCM II 8372875
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Alternator Belt Tensioner Mercedes W169 W245 OM640 Diesel Holder Mounting Panel
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Head Unit Mercedes GLA X156 Radio Media Player Navigation Switch A2469000816
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Mercedes W203 C200 Kompressor M271.940 163HP Engine ECU A2711534691 Automatic
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Audi A4 B7 Body Comfort Control Body Power Supply Module Unit BCM ECU 8E0907279J
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Negative Battery Cable Audi A1 8X Volkswagen Polo Mk5 6R Cable 6R0971228S
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Door Module Mercedes W205 W213 C253 Control Unit Rear Right O/S A1679003718
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Renault Trafic III Opel Vivaro B Air Module Control Unit ECU 93868139 985101902R
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Multimedia Player BMW X1 E84 E87 E90 E91 E92 LCI Radio Professional DAB 9302159
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Alternator Generator Mercedes Sprinter W906 Engine Diesel 180A 14V A0009068802
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Audi Q2 GA Volkswagen T Roc Battery Terminal Positive Cable 5Q0971228AC
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PDC Module BMW X3 F25 X5 F15 Mini F55 F56 Parking Distance Control Unit 6836883
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BMW F20 F30 120d 320d Diesel N47N 184HP ECU Unit DDE 8579478 Automatic
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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 .