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 A4 B8 2.0 TDI Diesel CAHA 170HP Engine ECU Kit Ignition + Key 03L906022MK
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Audi Q5 FY Crash Impact Sensor Unit Module Left Right N/O/S 4N0959651D
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BMW E87 LCI E90 E91 120i 320i Petrol N43 170HP ECU KIT DME 7575665 CAS3 + Key
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BMW E91 Light Control Module ECU PL2 FRMFA Lear 61359128183 9128183
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BMW X3 Z4 Series E83 E85 E86 Radio Business CD Player 9197127 9205279
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Mercedes SLK R172 Rear SAM Fuse Relay Box Control Unit Module A1729060205
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Wiring Harness Mercedes W221 OM642 Engine Wiring harness Loom A6421509089
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Parking Sensor BMW F20 F21 F22 F23 F30 F34 GT PDC Module Control Unit 7938190
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Mercedes-Benz ML W163 270 CDI Engine Control ECU Kit A6121536379 Key Automatic
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Volkswagen Golf Mk6 VI Air Module Control Unit ECU 5C0959655B
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Mercedes Sprinter W901 Central Lock Locking Control Unit Module A0165459232
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Mini Cooper R55 R56 R57 R58 Wiring Heated Seat Loom 2753025
€23.95
Free delivery - Wed, Dec 24
If paid before 14:00

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Mini Cooper F56 Wiring Driver's Loom Front Right O/S Door Cables 9338910
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Dashboard Monitor BMW G30 G31 Onboard Central Display Screen 10,25" 8715339
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Audi Q3 8U 2.0 TDI DFUA 184HP Quattro Engine Control ECU 04L907309AB Automatic
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Mercedes Sprinter W906 Radio CD Player Audio Bluetooth Head Unit A9069005103
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Mercedes GLE250 W166 OM651.960 204HP Engine ECU Kit Ignition + Key A6519004201
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BMW F20 F21 F22 F30 F31 F32 Radio Professional CD Player 9281519
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Mercedes C207 Glow Plug Relay Unit Control Module A6429005601
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BMW F22 F30 F32 220i 320i 420i Petrol N20 184HP ECU Kit DME 8631725 + Key + FEM
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Audi A3 S3 Q2 RS3 Multimedia Navigation Card Reader Head Unit 8V1035035B
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Head Unit BMW F10 F20 F22 F30 Navigation Sat Nav GPS Unit High 9387565
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Mini F54 F55 F57 B48 136HP Petrol Engine Control ECU Kit DME 8674258 Manual
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Mini Cooper One R50 Petrol W10 Engine Wiring Loom Harness Module 7533097
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Mercedes SLK R171 Crash Sensor Air Bag Impact Module Control Unit A0028201326
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Bluetooth Module Mercedes W247 W447 Multimedia Control Unit ECU A2479009412
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Parktronic Mercedes Sprinter W901 W903 Front Bumper PDC Wiring Loom Harness
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Mini Cooper S R56 R57 N14 1.6 ECU Control Unit Kit DME 7610011 CAS3 Key Manual
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Mini Cooper R56 R57 LCI R58 R59 R60 CD Radio Audio Player Control Unit 3457433
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Audi A4 B9 2.0 TDI DETA Quattro Engine Control Unit ECU 04L907309L Automatic
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Mercedes SLK R171 Fuse Box SAM Relay Control Unit Module A1715450101
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Chrysler Voyager 2.8 CRD ENR Engine Alternator Generator 4868429AD
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Audi A4 B8 Rear Door Module Control Unit ECU Left N/S 8K0959795A
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Mercedes W169 A160 266.920 95HP Engine Control Unit ECU Kit A2661531491 Key Lock
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Mini Cooper R56 Fuse Box SPEG High DC/DC H4 3455235
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BMW E60 Light Control Module Unit Lear LM E6X MAN.LWR Lear 6941589
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Mercedes W203 Aerial Antenna Amplifier Module Unit A2038206489
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Audi VW Seat Skoda Headlight Aim Range Control Unit Module ECU Xenon 3Q0907338C
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Control Unit BMW F01 F02 F07 F10 F11 CAS4 Key Reading Module 9268752
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BMW 3 Series E46 Cable Loom Door Rear Left Right N/O/S Wiring Harness 8378338
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BMW E81 E87 LCI Board Monitor Central Information Display 6,5" 9193753
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Ford Transit Mk7 Negative Battery Terminal Cable Wiring 8C1T14303CA
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Audi A4 B8 2.0 TDI Diesel CAGA 143HP Engine Unit ECU 03L906022MK Automatic
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Part no. 06K907425C-1
Audi Q3 8U 2.0 TFSI CULB 180HP Quattro Engine ECU Kit 06K907425C Ignition + Key
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Part no. 7581123-1
BMW E81 E87 LCI 130i N52N 258HP Engine ECU Kit DME 7581123 + CAS3 + Key Manual
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Mini One R56 LCI R58 N16 1.6 98HP Engine ECU Kit DME 8625068 CAS 3 + Key Manual
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BMW E60 E63 E64 Body Control Module ECU Control Unit 6969011
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PDC Display Mercedes W639 Front Parking Sensor Screen Control Unit A0015422623
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Audi A6 C6 Diagnostic Interface Gateway Control Module Unit ECU 4F0907468D
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Audi Q7 4L Quattro S Line Comfort Module Convinience Control Unit 4L0907289C
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Audi A5 8T Audio Amplifier Sound Booster Control Unit Module 8T0035223
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Audi A5 8T Body Control Comfort Unit Module BCM Unit ECU 8K0907063DC
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Led Indicator Module BMW F32 F33 F36 F80 F82 F83 Light Signal Blinker 7493232
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BMW X5 Series E53 PDC Parking Control Module Unit PDC 4104215
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Mini Cooper R55 R56 R60 CAS 3 ECU Control Unit Key Reading Module 9136874
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Mercedes Vito W447 Air Module Sensor Control Unit ECU A4479001000
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Fuse Box Mercedes Sprinter W901 W902 W903 W904 Relay Control Unit A0005400950
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Citroen C3 Picasso Negative Battery Terminal Cable Wiring Lead 9687656980
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BMW E87 Xenon Footwell Light Module Control Unit ECU PL2 FRMFA 6977724
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Audi A6 C7 Voltage Converter Stabilizer Control Module Unit ECU 8K0959663F
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Mercedes W166 W176 W246 Radar Sensor Front Control Unit Module A0009051302
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Audi A8 D4 4H Relay Fuse Bracket Holder Junction Box 4H0907348C
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Mercedes W176 W242 W246 Alternator Generator Bosch M270 Petrol A0009061903
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Mercedes W177 Turbo Engine Wiring Warness Loom A2821503400
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Mercedes W212 Front Left Right N/O/S Seat Wiring Loom Cable Harness A2128205313
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Mercedes W212 Radio Head Unit COMAND Navi CD DVD Player Control Unit A2129068800
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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 .