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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Fiat Doblo 2.0 M-jet Diesel 163HP Engine Control Unit Module ECU 51873219 Manual
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BMW 7 Series E65 E66 Telematics Bluetooth Control Unit Module 6945154
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BMW F20 F21 F30 LCI F36 120dX 320dX 420dX B47 190HP Engine ECU Unit DDE 8587952
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BMW E60 LCI E90 325d 525d M57N2 197HP ECU Kit DDE 8509034 CAS3 Key Manual
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Starter Ford Transit MK6 2.2 2.4 TDCi Diesel Engine Starter Motor YC1U11000AG
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BMW 1 Series E87 ECU Body Control Module H4 Electronic Box 6968039
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Alternator Generator Mercedes R171 W209 M272 Petrol Engine 150A A2721540002
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Panasonic AEC51012 Fuse Power Relay High Voltage Electrical Control Unit
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Audi A4 B9 Rear Hatch Boot Lid Tailgate Opening Control Module Unit 3G0962243D
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Ford Transit Connect Body Control Unit Module BCM Fuse Box KT1T15604CCE
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BMW E60 E61 530d Diesel M57N 218HP ECU Engine Control Kit DDE 7793210 Automatic
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BMW 5 6 Series E60 E61 E63 E64 Active Steering Control Unit Module 6768964
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Mercedes W176 Head Unit Radio Media Player Navigation A2469006218
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Volkswagen Touran 1T 1.4 TSI Petrol Engine Starter Motor 0AM911023T
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Starline 12V Accumulator Battery 70Ah 760A
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Audi A6 C7 4G Door Card Harness Loom Cable Wiring Rear Left N/S 4G5971693C
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Parking Sensor Display Mercedes W176 W204 W246 Dashboard Panel PDC A1725420023
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BMW 5 6 E60 E63 LCI Petrol N53 Wiring Loom Harness Engine 7575450
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Mini Cooper R55 R56 R57 Mitsubishi Engine Alternator Generator Petrol 7576921
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Mercedes W124 S124 Ignition Engine Control Unit Module A0155457032
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Audi A4 B7 CD Player Navigation System Car Sat Nav Computer Head Unit 8E0035192Q
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Mercedes W221 S320 CDI 642.930 235HP Engine Control ECU A6421507391 Automatic
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YUASA YBX 9000 AGM Start Stop 12V Accumulator Battery 80Ah 800A YBX9115
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BMW E92 ECU BCM Body Control Module H3 Junction Box 61359176884 9176884
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Mercedes 12V Accumulator Battery 74Ah 680A A0009823108
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BMW E60 E90 E91 N52 325i 525i Engine ECU Kit DME 7553166 CAS2 Key Automatic
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BMW G11 G12 G30 G31 G32 F90 F97 X3M F98 X4M Control Unit SAS Module ECU 9505281
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Mercedes-Benz W207 A207 Radio Aerial Antenna Amplifier Module Unit Right O/S
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Mini Cooper S R56 N14 1.6 174HP ECU Kit DME 7586134 + CAS3 + Keys Automatic
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Mercedes W205 Centre Console Lighting Wiring Harness Cable Loom A2059061905
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Mini Cooper F56 Wiring Driver's Loom Front Right O/S Door Cables 9338910
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BMW Z4 E85 2.5i M54 192HP Engine ECU Control Unit Module DME 7527072 Manual
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BMW F20 F21 LCI M140i B58 Petrol ECU Control Unit Module DDE 8689723 Automatic
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BMW X3 F25 CIC Sat Nav Professional Infotainment Radio Player Head Unit 9293404
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Audi S4 B8 Bluetooth Interface MMI Multimedia Control Module ECU Unit 4E0035729C
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Mini Cooper R60 R61 ALL4 N16 122HP Engine Control Unit ECU DME 8652745 CAS3 Key
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Audi A8 D4 4H Front Door Control Module Unit ECU Driver's Side 4H0959793R
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BMW E81 E87 LCI 116i E90 316i 115HP N45N Engine Unit ECU DME 7585249 Automatic
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Mercedes W212 E350 CDI OM642 Engine Unit ECU Kit A6421508900 Keys Lock Automatic
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BMW F30 F31 Wiring Loom Harnes Front Passenger Door Cables Harness 9326437
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BMW G30 G31 X3 G01 Control Unit Module Heater Ionizer ECU 9871349
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Mercedes W205 Navigation 2015/2016 Update SD Card Road Map Europe A2139060303
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BMW Z4 Series E89 Antenna Base 9140245 65209140245
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Halfords 12V Calcium Accumulator Battery 76Ah 680A HCB096
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Mercedes W639 113 CDI 651.940 136HP Engine Module ECU Kit A6519009302 Key Lock
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BMW F45 F46 X1 F48 Air Duct Front Slam Panel Flap Control Motor Drive E05078-100
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BMW F20 F30 F32 120i 320i 420i N20 184HP Engine Unit ECU DME 8631725 Automatic
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Mercedes W205 Center Console Ambient Lighting Light Wiring Harness A2055402324
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Engine Wiring BMW E39 Petrol Engine M52 Ignition Coil Wiring Harness 1439207
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BMW i3 I01 Hybrid Rex Petrol Fuel Pump Control Unit Module 7429966
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Mercedes W447 Electronic Module ECU Control Unit A4479000002
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Skoda Octavia RS 5E 2.0 TSI CHHB 220HP Engine Control ECU 06K907425B Automatic
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Audi A7 4G Rear Door Control Module Unit ECU Left Right N/O/S 4G8959795H
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BMW E65 E66 E67 Control Electronics Seat Occupancy 6943585
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Ford Transit Mk7 Engine Cooling Fan Radiator Module Control Unit 940002904
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Ford Transit Custom Adblue Harness Loom Wiring 2.0 EcoBlue GK21-14D378-AA
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Mercedes W639 Vito OM646 111CDI 116HP Engine Unit Module ECU A6461501191 Manual
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Audi Q7 4L Onboard Supply Body Control Comfort BCM Unit Module 4F0907279C
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Mini Cooper R55 R56 N12 DME Petrol Engine Control Unit ECU 7600020 Automatic
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Mercedes CL203 CLC 350 M272.960 272HP Engine Module ECU Kit A2721531291 2 Keys
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Mercedes Sprinter W907 Body Control Module Control Unit BCM V2 ECU A9079005405
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Audi A3 8P Door Wiring Front Right O/S Harness Loom Cable 8P4971035L
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BMW E60 E61 530i M54 231HP ECU Kit DME 7533651 + CAS2 + 2 Keys Automatic
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Rain Sensor Mercedes W204 Light Control Unit Front Windscreen A2048704926
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BMW E90 E91 LCI N47N 316d 116HP Engine ECU Kit DDE 8510832 + CAS3 + Key Manual
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BMW X3 E83 2.0i N46 150HP Engine ECU DME 7561834 Manual
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PDC Module Audi A3 8V Q2 GA VW Crafter PDC Assist Control Unit 5QA919294
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Right Connections Electronic CAN Bus Trailer Module Control Unit 12V SP343ZZC
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Mini Cooper S F55 F56 B48C 192HP Petrol Engine Unit ECU DME 9897880 Manual
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Fuse Box Mercedes SLK R171 Roadster SAM Relay Box Control Module A1715451701
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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 .