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 A5 8F 2.0 TDI Diesel Engine Alternator Generator 04L903017D
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Transfer Box Module BMW X5 X6 E70 E71 Control Unit ECU ATC700 7566297
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VW Volkswagen Touran Body Control Comfort Unit Module BCM 3C8937049D
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MINI One R50 R52 W10 90HP Engine Control Unit Module ECU DME 7553735 Manual
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Mercedes Sprinter W906 Battery Cover Frame Bracket Mount Holder A9065410740
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BMW X5 X6 Series E70 E71 Board Monitor Sat Nav System Screen 8,8" 9146651
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Mercedes W906 313 CDI OM651.955 129HP Diesel Engine ECU Kit A6519000700 Key Lock
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Audi A4 B8 2.0 TDI 143HP CAGA Diesel Engine Control Unit ECU 03L906022JM
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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 1 2 3 Series F20 F21 F22 F30 N47N Diesel Engine Starter Motor 8571905
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BMW E81 E82 E87 LCI E88 N47S 123d ECU Kit DDE 7811702 + CAS3 + Key Automatic
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Audi TT 8J Gateway Control Unit Module 7N0907530AL
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BMW F80 M3 F82 M4 S55 431 HP Engine Control Unit ECU DME 8645445 Dual Clutch
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Citroen Berlingo Peugeot Partner Body Control Module BSI Unit 967847688001
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Alternator BMW F20 LCI Mini F30 F56 F60 Alternator Generator DENSO 150A
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Mercedes ML W164 W251 Fuse Box Relay Module Control Unit A1645403572
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Audi A3 8P VW Scirocco Mk3 Starter Motor Engine Valeo 1.4 TSI Petrol 02Z911024P
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BMW 1 Series E81 E87 LCI Positive Battery Lead Cable Wiring
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Mercedes W212 W221 Rear DVD Entertainment System Video Player Unit A2128703689
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BMW GT G32 ECU Body Domain Controller BDC Comfort Unit Module 8715804
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BMW E87 E90 E91 118i 318i N46 129HP ECU KIT DME CAS2 Key 7561834 Manual Gearbox
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BMW Mini Cooper One R57 High PL3 SPEG DC/DC H5 Fuse Distribution Box 3455534
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Mini F56 Active Sound Design Radio Audio Amplifer Control Unit Module 9366112
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Mercedes CLK W209 Fuse Box Relay Control Unit Module SAM Fuse Box A2095450001
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Audi A3 8V 1.6 TDI DGTE 115 HP Engine ECU Kit Ignition + Key 04L907445G Manual
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Audi TT FV Air Module ECU Control Unit Crash Sensor 5Q0959655P
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BMW X6 E71 Door Wiring Harness Loom Cables Driver's Side 9242072
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BMW E60 M-Audio System Controller Navigation Head Unit 6948351
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BMW 5 Series E60 E61 Centre Console Switch Centre DTC PDC 6985748
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Ford Transit Battery Cover Fuse Box Trim Panel Lid YC15-10A687-A9W
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Mercedes W205 Front Door Module Right O/S Control Unit ECU A1679008711
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Audi A3 8P Air Module Control Unit ECU Module 8P0959655P
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Mercedes W221 Remote Trunk Closing Hydraulic Pump Motor Unit A2218001548
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TV Function Module BMW E65 E66 E67 Video Control Unit Tuner 6933866
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Renault Trafic II Control Unit Body Control Module BCM ECU P8200943317
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Mercedes W204 Wiring Loom Cable Harness Door Front Left N/S A2044400605
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Mini Cooper R55 R56 R57 LCI R58 R59 CHAMP 2 Navigation 9255065
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Audi A3 8Y Adaptive Cruise Control Radar Sensor Control Unit Module 5WA907572B
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Audi Q5 FY Alternator Generator Valeo 2.0 TFSI 06L903027
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Engine Starter BMW F20 F21 F22 F30 F32 N47N Diesel Motor Bosch
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BMW E81 E87 E90 E91 120d 320d N47 Engine Control Unit ECU DDE 7811700 Automatic
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Mercedes SLK R171 Crash Sensor Air Bag Impact Module Control Unit A0038212851
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BMW E65 Light Control Unit Headlight Module Lear LM E6X MAN. LWR 6936996
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Seat Ateca Door Module Control Unit Front Passenger's Side Door 5Q4959592K
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BMW F20 F21 F30 F31 Diesel Alternator Generator 180A 8578608
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Mercedes SLK R171 Fuse Box SAM Relay Control Unit Module A1715451701
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BMW F11 Touring Light Control Footwell Module Unit ECU FRM III 9273628
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Audi A4 B7 Window Antenna Amplifier Module 8E5035225D
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BMW 1 Series E81 LOW Light control footwell module ECU PL2 FRM II 9197154
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Seat Leon FR 5F Dashboard Multimedia DIsplay Sat Nav Screen 5F0919606
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Audi TT 8J Front Left N/S Door Wiring Harness Cable Lom 8J0971030AE 8J0971030AB
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Door Module BMW E39 Passenger Door Control Module Hella 8378766 6904242
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Land Rover Freelander 2 Navigation Nav Reader DVD CD Control Unit 6G9210E887EE
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Audi A3 8P Control Unit Gateway Module ECU 8P0907530C
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Ford Ranger Explorer Starter Motor Engine Actuator Diesel Mitsubishi M002T87271
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BMW X5 E70 Navigation System Car Computer CIC DAB X6 E71 9273182
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Mercedes V251 SAM Body Control Module Rear Unit A1649007000
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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 .