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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Mercedes W204 Front Fuse Box Relay Control Unit SAM Module A2129005622
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Alternator Generator Mercedes W203 W204 M271 Engine Valeo 120A 14V A2711541402
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Mini Cooper S R55 R56 N14 1.6 174HP ECU Kit DME CAS3 Key 7584113 Manual
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Mercedes E-Class W211 Passenger Side Acquistition Actuation Signal Control Unit
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BMW 1 Series E87 LCI E87N Cable Set PDC Front Wiring Loom 9128573
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Mercedes C118 W177 W247 Battery Box Tray Trim Housing Cover A2475411000
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Mercedes ML W163 Module SAM Electronics Control Unit A1635457032
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BMW X3 F25 20dX Diesel N47N 184HP Engine Module ECU DDE 8513184 Automatic
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Mercedes W204 COMAND Navi CD Player Radio Sat Nav Head Unit A2049004714
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Audio Amplifier BMW F20 F21 Mini F55 F56 Top Hifi Harman Kardon Unit 9353990
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Volkswagen VW Crafter Battery Lead Positive Cable Plus Pole Wiring VW9065400105
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Audi A4 B9 2.0 TFSI CVKB Petrol Engine Starter Motor 06L911021A
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Land Rover Freelander 2 Radio Stereo CD Player Head Unit 6g9n-18c815-ta
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BMW G30 Seat Occupancy Sensor Mat Passenger Side Control Unit Module 9304007
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Rain Sensor Mercedes SLK R172 W204 Front Windscreen Control Unit A2049017901
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BMW E60 Light Control Unit Module LM E6X MAN LWR Lear 6983538
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Mercedes W213 OM654 Battery Cable Starter Alternator Wiring Harness A2385406926
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Mini Cooper One R50 R52 Petrol W10 Compact Alternator RTX 7515029
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Air Module BMW F45 X1 F48 Mini F54 F55 F56 Air Module Control Unit ECU 6998485
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Mercedes W204 Navigation Radio Player Head Unit Hazard Seat Switch A2049009907
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Footwell Light Module Mini R60 Unit Low EKS ECU PL3 FRM3R 3457029
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Mercedes ML W163 Alternator Generator A0001502550
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Mercedes C140 Battery Box Boot Storage Cover A1406934633
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Mercedes-Benz M-Class ML W163 Fuel Pump Bracket Holder Housing A6110920140
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BMW E60 525i M54 192HP ECU Engine Control Unit Module DME 7533651 Automatic
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Battery Cable VW Golf 8 Audi A3 8Y Starter Alternator Wiring Harness 5WA971230CM
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Audi A3 8P Boot Trunk Subwoofer Rear Bass Speaker 8P3035382E
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BMW Mini Cooper One R55 R56 R57 CD Changer 6 Disc Player 9167081
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Sound Amplifier BMW F30 F31 F80 M3 Hifi Audio Control Unit Harman Becker 9381882
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Mercedes S211 W211 Fuse Box Unit Cover Front A2115400082
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Mini Cooper One D R50 W17 Alternator Generator 130A 7790879
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Battery Cable BMW X3 F25 X4 F26 Positive Plus Pole Lead 9321005
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Audi A8 D4 4H Relay Fuse Bracket Holder Junction Box 4H0907348C
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Audi TT FV Entry Keyless Kessy Control Module Unit ECU 3Q0959435B
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Volkswagen Touareg 7L Display Screen Multimedia Navigation Unit 7L6035177E
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Mercedes W168 Battery Support Holder Front Mount Bracket A1686100336
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Mercedes W219 CLS350 CDI OM642.920 Engine Module ECU Kit A6421501230 Key Lock
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Mercedes S212 E220CDI OM651.924 170HP Engine Control Unit ECU Kit A6519005301
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Mercedes-Benz C E W203 W211 Parking Sensor Wiring Loom Cable Harness Front PDC
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Air Module Mercedes ML W166 Interior Safety SRS Control Module A1669001311
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BMW E60 E60N E61N LCI M-Audio System Controller CD Player Navi 9186213
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Fuse Box Mercedes W205 W213 GLC X253 Hybrid Power Distribution Unit A2135401115
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BMW Mini 1 R50 R53 Rear PDC Ultrasonic Parking Sensor Pure Silver Metallic 900
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Mercedes W204 SAM Module Fuse Box Relay Control Unit A2129005722
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BMW 3 Series E46 318i Petrol N42 Engine ECU Control Unit DME 7508292 Manual
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Light Module Mini R55 LCI Cooper ECU Footwell FRM3R LOW EKS Lear 3456394
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Volkswagen Touran Engine Starter Motor 02M911023N
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Mini One F56 B38 102HP Petrol Engine ECU Control Unit Kit DDE 8486844 BDC Key
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Control Panel Mercedes W212 Comand Navi CD Switch Push-Button A2128702751
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Audi TT 8J Driver's Side Door Wiring Harness Loom 8J0971029AD
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Ford Transit Mk7 2.2 TDCi Euro 4 Diesel Engine Wiring Loom Cables 6C1T12B637JF
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Audi RS3 8V PDC Parking Distance Control Sensor Module Unit ECU 5Q0919294K
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Volkswagen Golf Mk7 GTI 2.0 TFSI CHHA 230HP Engine Control Unit ECU 04L907309B
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Mercedes ML W164 Rear SAM Module Control Unit Fuse Box A1645400701
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Mercedes Sprinter W906 Radio Player CD Audio 10 Stereo Head Unit A9069000004
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Land Rover Freelander 2 Bluetooth Module Control Unit ECU 7G9N-10D893-AA
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Mini Cooper R56 SPEG PL3 M2 SPEG Fuse Distribution Box 3453736
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Mercedes C117 W166 W176 W222 W246 Relay Black Control Unit 12V 20A A0025429219
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Mercedes W176 W246 Radio COMAND Nav CD Player Control Head Unit A2469003519
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Audi A4 B7 Front Door Wiring Harness Loom Cable Left N/S 8E1971035DJ
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BMW X3 F25 Footwell Light Module Control Unit ECU FRM3 9383700
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Audio Amplifier BMW F30 F31 LCI F32 Top Hifi Harman Kardon Control Unit 9393186
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Alternator Volkswagen Crafter 2.0 TDI Engine Alternator 120A Bosch 028903028E
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BMW E60 E61 E63 E64 E65 E66 Air Recirculation Control Sensor AUC
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Mini Cooper R55 R56 R60 CAS 3 ECU Control Unit Key Reading Module 9221719
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Mercedes W168 W203 W211 W218 Relay Unit 5-Pin Yellow Hella A0025421219
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Mercedes W221 Centre Console Telephone Keypad Control Unit Module A2218230050
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Mercedes W176 W205 Exhaust Control Valve Flap Actuator Module Unit A0325456926
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On-Board Screen BMW F30 F31 Central Information Display Monitor 8,8" 9281688
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Fuse Box Mercedes Sprinter W901 W902 W903 W904 Relay Control Unit A0005400950
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Mercedes W203 W639 Audio 10 CD Player Audio Stereo Radio Head Unit A2038202686
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BMW E60 E90 X5 E70 3.0sd 335d 535d M57N2 Engine ECU KIT DDE 7810980 CAS3 + Key
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BMW E92 Xenon Footwell Light Module Control Unit ECU PL2 FRM II 9204526
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BMW E39 E46 Mini Cooper R50 EWS3 Control Unit 3 Immobiliser Module ECU 6905666
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Mercedes Vito W639 Fuse Box Relay Control Unit Electric Module SAM A6399005400
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Differential Lock Module BMW F10 M5 F80 M3 Rear Axle Control Unit ECU 7852630
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BMW X5 Series E53 Cable Harness Door Front Right Left N/O/S 6923511
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Audi Q7 4L 4.2 TDI Quattro Positive HV Battery Terminal Cable Harness 7L0971225
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Audi TT 8J Front Left N/S Door Wiring Harness Cable Lom 8J0971030AE 8J0971030AB
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Renault Trafic II Opel Vivaro A 1.9 DCI Alternator Generator 8200086130
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Volkswagen Fox 5Z Stereo Radio CD Player MP3 Head Unit 5Z0035152E
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Seat Module Mercedes W213 C238 Memory Control Unit Left Right N/O/S A2139008409
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BMW Z4 Series E89 Roadster Cabrio Convertible Top Module CTM 09281723 9281723
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BMW Z4 E89 Central Information Display Dash Screen Navigation Monitor 9282022
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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 .