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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Alternator Generator Mercedes Sprinter W906 Engine Diesel 180A 14V A0009068802
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Audi A6 C7 Front Door Control Module Unit ECU Driver's Side 4G8959793E
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BMW X5 X6 Series E70 E71 Board Monitor Sat Nav System Screen 8,8" 9166782
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Relay Mercedes W166 Voltage Dip Protection Start/Stop Relay Module A0009820123
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Alternator Mercedes W212 Engine Generator 220A Valeo A0009063522
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Mini Cooper One R55 R56 R57 LCI R58 R59 CHAMP 2 Navigation 9361145
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BMW X3 E83 Light Control Unit Module LEAR LM II LWR 3451625
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BMW X3 Series E83 3.0d M57N2 218HP ECU DME Unit 7801217 Automatic Transmition
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Mercedes W204 Fuse Box Relay Control Unit Electric Module SAM A2045454501
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SAM Module Mercedes Sprinter W906 Fuse Box Relay Control Unit A9069006701
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Volkswagen Golf VI Passat B6 Tiguan Starter Motor Diesel Engine 02M911024Q
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Mercedes W176 Front Crash Impact Airbag Sensor Pressure Sensor Unit A1769051000
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Audi A1 8X Air Module Control Unit Sensor 8X0959655B
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BMW F46 220dX B47 190HP Engine Control Unit Module ECU DDE 8589145 Automatic
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Alternator Mercedes Vito W639 Sprinter W906 14V 180A Generator Valeo A6461541102
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AUDI A7 4G8 Parking Assist Sensors Distance Control Module 4H0919475N
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Ford Transit Connect Cable Alternator Starter Motor Battery Wiring FV6T-14A280
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Mercedes W169 W245 CD Player Radio Audio Head Unit A1698207589
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Mercedes W204 C350 CDI OM642.830 Engine Module ECU Kit A6429002900 Key + Lock
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BMW E65 E66 E67 Rear Bumper PDC Ultrasonic Sensor Titan Silver
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Rain Sensor Mercedes SLK R172 W204 Front Windscreen Control Unit A2049017901
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Mercedes W211 Central Gateway Module Control Unit A2115405645
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BMW G20 320d B47D 190HP Engine Control Unit Module ECU Kit DDE 8475468 Key BDC
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Mercedes C118 W177 W247 Body Control Module BCM V2 A2479001506
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Mercedes C253 Fuel Pump Module Control Unit ECU A0009002218
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BMW E60 E90 E91 LCI 330i 530i N53 272HP ECU Kit DME 7616431 CAS3 + Key Automatic
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Mini Cooper R55 R56 Harman Becker Hi-Fi Audio System Amplifier 3450588
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Mercedes ML W164 Cable Loom Wiring Parking Sensors Rear Bumper A1645402405
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Mercedes W639 W906 W907 OM642 Diesel Engine Alternator Generator A0009062700
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Mercedes W221 Fuse Box Front SAM Module Relay Control Unit A2215402862
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Audi A4 B8 A5 8T A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181B
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Mercedes W204 Fuse Box Relay Control Unit SAM Module A2049000600
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Mini Cooper S R52 R53 W11 Engine Wiring Loom Harness 7533103
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Mercedes W211 Front Drivers Door Left N/S Control Module A2118701126
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Audi A8L 4H Front Door Control Module Left N/S Unit ECU 4H0959792G
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BMW F07 F10 F11 F12 F13 Battery Cable Wiring Plus Pole 9217036
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Front Apron BMW F30 F31 F32 Front Bumper PDC Wiring Cable Loom Set 9283653
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BMW E81 E87 LCI N43 116i 2.0 122HP Engine ECU Kit 7595179 DME CAS3 Key Manual
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Mercedes W204 Navigation CD Player COMAND Radio Sat Nav Head Unit A2049005903
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Mercedes W216 W221 Central Gateway Control Unit Module VST A2219006702
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Alternator BMW E90 E81 E87 E85 Petrol Engine N45 N46 Alternator 150A 7533270
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Mercedes W204 Fuse Box Relay SAM Control Unit Module A2129005912
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Audi A4 B7 4.2 FSI V8 Petrol Engine Alternator Generator 079903018X
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BMW E46 E64 Driver Side Seat Wiring Loom Electric Harness 7002532
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Starter Mercedes Sprinter W906 Diesel Engine Starter Motor Valeo A0061517401
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Mini R52 R53 Petrol W11 Compact Alternator Generator 7515030
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Mercedes Vito W447 Rain Light Sensor Windscreen Control Unit A4479052505
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Alternator BMW M3 E46 Z3M E36 Petrol S54 Generator Valeo 120A 7831436 7830791
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Mercedes W169 W245 CD Player Radio Audio Head Unit Player A1698205189
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Renault Master III Opel Movano B 2.3 DCI CDTI Alternator Generator 231001822R
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Front Fuse Box Mercedes W204 C207 Relay Control Unit SAM Module A2129000206
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BMW X3 Series E83 3.0i M54 Automatic Gearbox Basic Control Unit EGS 7532988
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Audi S8 D3 Valve Block Air Suspension Control Unit Module 4F0616013
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Mercedes W204 Battery Fuse Box Positive Distribution Terminal A2075401550
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Iveco Daily MK3 Starter Motor Engine Diesel Bosch 504086888
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BMW Mini One R56 N12 1.4 N12B14A 95HP Petrol ECU Kit DME 7589971 + CAS3 + 2 Keys
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Audi A4 B9 Communication Telematics Control Module Unit ECU 4KE035282H
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BMW E60 E90 E91 N52 325i 525i 218HP ECU Kit DME 7567178 CAS3 + Key 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 .