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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Part no. 4F0907280B
Audi Q7 4L On Board Onboard Supply Module Control Unit ECU 4F0907280B
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BMW E61 E92 F32 LCPA Seat Belt Control Module ECU 9129439
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Audi TT 8J 3.2 V6 BUB Ignition Wiring Harness Guide Trim 022971615B
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BMW F01 LCI Seat Module Front Seat Control Module Unit Temic 9354277
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Ford Transit MK7 Diesel Glow Plug Relay Control Unit Module CC11-12B533-AB
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Mercedes Vito W639 Airbag SRS Module Control Unit ECU Air Bag A0009010201
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BMW E60 E81 E87 E90 E91 E92 CAS 3 ECU Control Unit Key Reading Module 9147191
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Negative Cable Mercedes C117 W176 Battery Lead Minus Pole Wiring A1765400009
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Mercedes CL203 Radio Aerial Antenna Amplifier Wiring Cables A2038200389
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Radio CD Player VW Volkswagen Golf 5 Passat B6 Head Unit MP3 RCD 300 1K0035186AF
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Engine Wiring BMW F10 F11 520d N47N Diesel Loom Harness Cable 7823648
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Radio Professional BMW E81 E82 E87 E88 E90 E91 E92 E93 Autoradio CD 9231928
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Mini Cooper R56 N12 W16 Alternator Generator Napa 7575650
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BMW E38 E53 E86 F15 Mini R50 Diagnoctic Socket Connector Plug Housing 8380698
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Mercedes X117 CLA 45 AMG 4-Matic M133.980 Engine Control ECU Kit A2709002100
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Mercedes W903 Diesel Engine Alternator Generator 45-90A 14V A0101540802
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Renault Master III Engine Alternator Mounting Bracket Carrier 8200803443
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BMW X5 E53 Onboard Computer Navigation System Monitor Widescreen 6934413
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BMW E81 E87 E90 Hands Free Electronics Charging Bluetooth Module MULF 6950089
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MINI Cooper R50 W10 116HP Engine ECU Kit DME 7520019 + EWS3 + Key Automatic
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Mercedes W176 W207 W246 USB Interface Multimedia Adapter Connector A1728202100
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Alternator Generator Mercedes W221 OM642 Diesel Engine 220A A0131540602 11304N
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Mercedes W221 Centre Console Telephone Keypad Control Unit Module A2218230050
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BMW E81 E82 E84 E87 E89 E90 E91 E92 Radio Business CD 9259730
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BMW E81 E90 LCI Business System Car Infotaiment Computer CIC 9226347
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Mercedes Vito Viano W639 Side Sliding Door Control Unit Module A6394460332
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Mercedes W205 SAM Module Rear Body Comfort Control Unit ECU A2059008304
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Ford Transit Connect Control Unit Central Door Locking Module ECU 9T1T-15K600-DD
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Skoda Octavia 5E MMI Multimedia Interface Unit Module Control ECU 5E0035842A
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BMW 3 4 Series F30 F82 M4 Carrier Mount Holder Backrest Left N/S 7346699
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Part no. 8K0971104AF
Audi A5 8T 5 Door Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104AF
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Mercedes SLK R171 Air Module System Control Unit ECU A1718206526
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BMW F20 F21 F22 F30 F31 Alpine Cd Radio Player Head Unit 9271715
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Part no. 6G9T14B533KL
Module Land Rover Freelander 2 ECU Front Door Window Control Unit 6G9T-14B533-KL
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Part no. 8K0907063DD
Audi A5 8T Onboard Comfort Supply BCM Control Module Unit ECU 8K0907063DD
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Part no. 7513338
Mini Cooper R50 R52 Automatic Gearbox Transmission Signal Control Module 7513338
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Engine Wiring BMW F10 M5 F12 M6 Loom Harness Injection Valve Cyl. 1-4 7843329
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Part no. 3447012
GM Vauxhall Opel Relay 4-Pin Multi Use Glow Plug Unit Green 03447012
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Audi A3 S3 8P Engine Bay SAM Relay Fuse Box Module Control Unit ECU 1K0937124P
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Battery Cable Mercedes W176 W246 Negative Lead Wiring Harness A1669056001
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BMW F15 F85 F16 F86 Steering Wheel Lane Change Control ECU Module Unit 7849446
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Mercedes W907 Battery Cable Alternator Wiring Loom Harness Cabling A9075404687
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Mini Cooper R57 PL3 SPEG H4 Fuse Distribution Box 3455533
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BMW 3 Series E90 E91 E92 E93 Engine Starter Motor 0 986 021 230
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Audi A5 8T Seat Module Control Unit ECU Front Left Right N/O/S 8T0959760
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Audi A4 B9 2.0 TFSI CVKB Petrol Engine Starter Motor 06L911021
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Mercedes W204 W212 Fuse Box Relay Control Unit Electric SAM Module A2129009705
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Mercedes CLK W209 Automatic Gearbox EGS Control Unit Module ECU A0325452332
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Part no. 6943157
BMW Mini Cooper One R50 R53 Body Control Unit Basic Module BCM 6943157
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Engine Harness Mini F56 F60 BMW F40 F46 Sensor System Module 2 Wiring 8678972
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BMW X5 E53 Bosch Xenon Headlight Level Control Ballast Module 1307329060
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Renault Trafic II Opel Vivaro A 2.0 DCI Alternator Bracket Mount 8200527320
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Mercedes-Benz A B W169 W245 Door Cable Harness Wiring Loom Front Left N/S
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Part no. 8K0907064CP
Body Control Module Audi A4 B8 A5 8T BCM Comfort Control Unit 8K0907064CP
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Part no. 5Q4959593E
Seat Leon Mk3 Door Module Control Unit Front Driver's Side Door 5Q4959593E
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ECU Kit Mini R55 R56 R57 N12 1.6 120HP Control Unit DME 7589971 + CAS3 + Key Manual
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Fuse Box Mercedes W211 W219 Junction Relay Control Unit Module SAM A2115459001
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Part no. 9261580-GSB
BMW F20 F21 F30 F31 PDC Parking Sensor Ultrasonic SET x2 Glacier Silber - A83
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Part no. 5Q4959392B
Skoda Octavia 5E Front Door Control Module Unit Passenger Side 5Q4959392B
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Audi Q2 GA Online Services Control Module ECU Control Unit 5WA035282
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Mercedes W221 Front Door Control Module Unit Left N/S ECU A2218706586
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Part no. 9162959
Seat Control Unit BMW X5 E70 E87 E90 E91 E92 Module Memory ECU 9162959
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Air Module ECU Mini F54 F55 F56 F57 F60 Crash Control Unit Module 9484304
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Part no. 9381102
BMW F20 F30 F36 Front Electronic Module Control Unit FEM 9381102
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Part no. 9247472-2
BMW E84 ECU Body Control Module Junction Box H2 9247472
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Part no. 1K0971349EM
Volkswagen VW Touran 1T Alternator Main Cable Wiring Harness Loom 1K0971349EM
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Part no. A1685401130
Mercedes-Benz A W168 CDI Battery Terminal Positive Cable Wiring A1685401130
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Part no. A2479002516
Mercedes C253 Windscreen Camera Control Unit Module A2479002516
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Communication Module Mercedes W177 W205 W213 X253 Hermes LTE Unit A2389008601
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Part no. 8K0907566H
Audi A5 8T Module Lane Assist Control Unit Rear Right O/S 8K0907566H
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Part no. 1378481080
Peugeot Boxer Fiat Ducato 2.2 Diesel Battery Alternator Wiring Cable 1378481080
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Part no. 9293307
BMW F30 REM Rear Electronic Module Fuse Box Control Unit V2 9293307
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Part no. 81A035382
Audi Q2 GA Rear Centre Loudspeaker Subwoofer 81A035382
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Relay Mercedes W124 E280 Petrol Fuel Pump Cut Off Relay A0035452405
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Mercedes W176 180 CDI OM607.951 Blue Efficiency ECU Kit A6079002300 Key Lock
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Mercedes W906 OM651.955 Diesel Engine Wiring Harness Loom Cable A6511508656
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Part no. 9230448
BMW 3 Series E90 LCI Footwell Light Control Module LCM LED Basis 9230448
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BMW F20 F21 F30 F31 Fuel Pump Delivery Control Unit Module 7450992
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Part no. 6R0937087P
Volkswagen Polo 6R Fuse Box Module Comfort BCM Body Control Unit ECU 6R0937087P
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Mercedes W164 Fuse Box Holder A1645402972
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Mercedes Sprinter W906 Fuse Box Cover Trim Panel Lid Grey A6395450003
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Audi A6 4F C6 3.0 TDI Diesel Starter Motor Bosch 0001109319 059911024D
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BMW Z4 E85 E86 Positive Battery Cable Plus Pole Lead 6953424
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BMW 3 E36 Coupe Saloon Aerial Antenna Amplifier Signal Booster Module 1387751
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Mercedes Sprinter W906 Fuse Box Relay Control Unit Module A9065454301
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BMW E65 E66 Front Seat Occupancy Sensor Mat 6914666
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KIA CEED I 1.6 CRDI Diesel Engine Control Module ECU 39120-2A051 Manual
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Engine Wiring BMW F10 F31 F32 N20 Loom Module Harness Cable 7641652
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Radio CD Player Mercedes W211 CLS C219 COMAND Navigation Head Unit A2118204497
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Part no. 6978713
BMW E60 Body Control Module ECU Control Unit KBM Basis 6978713
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Part no. 6823594
BMW X3 F25 Footwell Light Control Unit Module ECU FRM III TEMIC 6823594
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Part no. 1437967
BMW E46 M43 Engine Wiring Loom Harness Ignition Module Cable 1437967
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Part no. A0028203226
Air Module Mercedes W210 SRS Control Unit ECU Control Module A0028203226
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Part no. 7550967-1
BMW E81 E90 E91 E60 Petrol Alternator Generator 150A 7550967
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Part no. A0175450632
Mercedes C140 Gearbox Module Transmission Basic Control Unit A0175450632
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Part no. 7788680-5
Starter Motor BMW E46 E60 E83 E53 M57N Diesel Engine Starting Unit 2KW 7788680
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Part no. 5Q0937125B
Volkswagen Golf Sportsvan Fuse Box Engine Compartment Relay Unit 5Q0937125B
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Part no. A2039000100
Mercedes CL203 CLC Head Unit CD Player Radio Audio Controller Unit A2039000100
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Part no. 9116255
BMW E60 E61 Touring Light Module Control Unit ECU LM MAN.LWR 9116255
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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 .