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 Q5 FY 2.0 TFSI DAXB 252HP Quattro Engine ECU Kit Gateway + Key 06L907425C
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Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023
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Mercedes W219 Hood Bonnet Light Solar Sensor Module A2118700110
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BMW X3 X5 E39 E46 E53 E83 Mini R50 R52 Control Unit Control Unit EWS3 6905669
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Renault Trafic II Opel Vivaro A 2.0 DCI Alternator Generator 8200404459
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Peugeot Boxer Fiat Ducato 2.2 Diesel Battery Alternator Wiring Cable 1378481080
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Mercedes-Benz A B Class W169 W245 SAM Control Module Fuse Box A1699004800
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BMW E60 LCI E90 M57N2 325d 525d 197HP ECU Kit DME CAS3 + Key 7809941 Automatic
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Volkswagen Golf Mk6 Alternator Generator Electrical Unit Valeo 03L903023F
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Alternator BMW M3 E46 Z3M E36 Petrol S54 Generator Valeo 120A 7831436 7830791
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Mercedes C209 CLK200 M271.955 184HP Engine ECU Kit Ignition A2711535491 Lock Key
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BMW 7 Series E65 E66 E67 Sensor B-Pillar Airbag Right O/S 6970894
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Mercedes-Benz C CLK W203 C209 1 Sam Control Module Fuse Box Front A0025459301
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Audi Q3 8U Parking Brake Handbrake Module Control Unit 3AA907801H
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BMW E89 Max Brose Footwell Light Module Control Unit ECU FRM3R 9249086
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Fuse Box Mercedes GLC X253 Engine Compartment Relay Box Unit A2229063805
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Audi Q3 8U Air Module Control Unit SRS System ECU 8U0959655B
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Battery Cable BMW X5 F15 Positive Plus Pole Distribution Box Wiring SBK3 9322056
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Antenna Amplifier BMW Z4 E85 E86 Rod Antenna Unit Module 9119578
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Mercedes W213 Trunk Tailgate Rear Switch Sensor Module A2229059004
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Mercedes-Benz E W210 Estate CDI Gearbox Control Module Unit ECU A0305454932
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Vauxhall Corsa D 1.3 CDTI Z13DTH Diesel Engine Control Unit Module ECU 55568385
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Mini Cooper SD ALL 4 R60 N47N 143HP Diesel Engine ECU DDE 8519663 Manual Gearbox
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Mini Cooper One D F54 F55 F56 F57 Engine Starter Motor Diesel Bosch 8570848
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Mercedes W168 W169 W245 Blue Relay 4-Pin Tyco A0025422519
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Mercedes SLK R171 Fuse Box SAM Relay Control Unit Module A1715451701
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Mercedes C253 Body Control Module Temic A2539005906
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BMW X5 E53 6-disc CD Changer Control Unit Module With Magazine 6977766
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Mini R55 R56 Engine N14 1.6 174HP ECU Kit DME 7610081 CAS3 + Key Manual
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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 .