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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Communication Module BMW M4 F82 Telematic Bluetooth Control Unit 8734753
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Audi TT Mk2 8J 2.0 TFSI BWA 200HP Engine ECU Kit Ignition + Key 8J0907115N
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BMW 1 3 E87 E90 N45 116i 316i Petrol ECU Kit DME 7557809 + CAS 2 + Keys Manual
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Alternator Mercedes Sprinter W906 Vito W636 W639 Diesel 180A Valeo A0009068802
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BMW E46 Rear Antenna Aerial Amplifier AM/FM 6912824
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BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9329700
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Mini R50 R53 Body Control Unit Basic Module Controller BCM BC1RD 6934293
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Volkswagen Golf Mk7 5G Alternator Generator 2.0 TFSI CHHA 06J903023H
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Alternator Generator Mercedes R171 W209 W211 M272 Petrol Engine 150A A2721540002
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BMW F23 Cabrio Convertible Folding Top Module CVM 8 Unit 9378072
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Mercedes W204 Rear SAM Module Fuse Box Relay Control Unit A2049060205
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Battery Clamp VW Golf 8 CD1 Audi A3 8Y Battery Base Bracket Holder 5Q0803219C
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VW Volkswagen Golf Mk7 Front Impact Crash Air Module Sensor 5Q0959655AA
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BMW E60 E90 Dashboard Dash Onboard Monitor Display Screen 8.8" CCC 9145102
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BMW F45 X1 F48 i3 I01 Airbag Module Control Unit ECU Air Bag 9495910
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Mini Cooper One R55 R56 R57 Airbag ECU Control Unit Module 9811224
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BMW E46 Radio Business Cassette Player Audio Control Head Unit 8383149
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BMW 3 Series 1 E90 E90N E91 E91N LCI Wiring Loom Set PDC Rear Set Complete
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BMW Z4 E85 2.2i 2.5i 3.0i M54 Wiring Loom Harness Engine Module 7532036
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BMW E46 E83 Basic Body Control Unit Module GM5 Star12 9161931
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Starter Mercedes W204 W212 Diesel OM642 Starter Motor 1005831549
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Audi A3 8V Negative Battery Terminal Cable Harness Wiring Loom 5Q0915181H
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Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6394405209
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Audi Q7 4L Tyre Pressure Sensor Control Module Unit ECU 4F0910274C
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BMW F30 F31 F32 Bluetooth Player Unit Radio Professional CD 9290989
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Mercedes W163 Air Module System Control Unit Module ECU A1635422918
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Mercedes W211 Front Fuse Box SAM SRB Module Relay Control Unit A2115455232
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Mercedes Vito W639 OM646.980 Engine ECU Control Unit Module A6461500977 Manual
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Mercedes Sprinter W906 Door Module Front Right O/S Control Module A9069006100
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Seat Leon Mk3 Door Module Control Unit Front Driver's Side Door 5Q4959593E
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BMW Z4 Series E85 Cable Loom Driver's Door Wiring Harness 6986980 6986976
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Air Module Mercedes W211 CLS C219 SRS Control Unit ECU A2118702626
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BMW E87 E90 E91 E92 Front Power Distribution Fuse Box 6906622
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Engine Wiring Mercedes W204 OM651 Diesel Harness Loom Cable A6511500156
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Mercedes-Benz B-Class W245 180CDI Engine Wiring Harness Loom Cable A6401504033
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BMW E46 M47N M57N Alternator Generator 150A Valeo 7789980
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BMW 1 3 Series E81 E87 E90 E91 E92 6-disc CD Changer Without Magazine 6977759
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BMW X3 E83 Diesel Battery Positive Lead Red Cable Plus Pole Wire 3414880
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Mini Cooper S R55 R56 LCI N18 1.6 184HP ECU Kit DME 7619333 + CAS3 + Key Manual
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Audi Q7 4L A1 8X Negative Battery Cable Lead Monitoring Module 8K0915181D
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BMW X2 F39 F40 F44 F45 F46 F52 Air Quality AUC Sensor 9872066
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Mercedes ML W164 Lumbar Module Front Seat Control Unit A0009105202
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BMW F22 F23 Active Front Bumper Sensor Pedestrian Protection Unit 9196020
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Mercedes W212 OM651.924 E220CDI 170HP Engine Control Unit Module ECU A6519003701
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Mercedes Vito W639 Door Module Front Left N/S Control Unit ECU A6399003100
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Seat Module Mercedes W164 W203 W211 C219 Front Memory Control Unit A2118704585
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Audi A4 B8 Headlight Headlamp Range Control Unit Module 8K5907357
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BMW 5 Series E61 Touring Diversity Aerial Antenna Suppression Filter 6953191
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Renault Trafic II Vauxhall Vivaro A 2.0 DCI Alternator Generator 8200404459G
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BMW F30 F31 F32 F33 Central Information Screen Display 8,8" 9292248
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BMW F20 F21 F30 F32 N55 Power Distribution Module Bracket Cover Carrier 8620771
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Mercedes W216 W221 Central Gateway Control Unit Module VST A2219006702
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BMW E60 E64 LCI Body Gateway Module ECU Control Unit KGM E6X High D-Can 9176079
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BMW F40 M135i xD B48 306HP Engine Control Unit ECU Kit DME 5A088E6 BDC Key
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Alternator Generator BMW E87 E90 E91 Diesel Engine Electrical Unit 150A 7802471
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Audi A4 B7 Body Comfort Control Body Power Supply Module Unit BCM ECU 8E0907279J
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BMW F10 F11 Active Pedestrian Protection PTS Front Bumper Sensor Unit 9241032
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BMW Mini Cooper One R50 R53 Body Control Unit Basic Module BCM 6943157
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Audi TT 8J Radio Head Unit CD Audio Player Control Unit 8J0035186J
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BMW X3 E83 Steering Control Module Unit Servo SVT Servotronic 3404171
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Mercedes W221 Door Control Module Unit ECU Front Right O/S A2219008603
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BMW 5 6 Series E60 E61 E63 Driver Side Door Airbag Control Unit Module 6945144
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Key Reading Module BMW E60 E61 E81 E87 E90 E91 CAS 3 ECU Control Unit 9287535
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BMW E92 ECU Body Control Module Junction Box L1 PL2 JBBFE 9134483
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Seat Ibiza 6J VW Polo 6C 6R Air Module Unit Control Unit ECU Bosch 6C0959655L
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Mini R50 R52 R53 Positive Battery Terminal Cover Cap Red 8385236
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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 .