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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BMW E60 Light Control Unit Module LM E6X MAN.LWR Lear 9112631
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Mercedes W221 Digital Audio DAB Receiver Control Unit Module A2219000100
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Audi A4 B8 Door Wiring Harness Loom Front Cabling 8K0971029M
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Audi A4 B7 Door Wiring Harness Loom Front Cabling 8E1971029AA
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Audi A4 B7 Door Harness Loom Cable Wiring Rear 8E1971687L
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BMW E90 E91 F10 Mini R50 R52 Change Over Contact Relay Grey 5 Pins Set 1393415
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BMW E90 E91 F10 Mini R50 R52 Change Over Contact Relay Grey 5 Pins Set 1393415
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BMW E60 E63 E87 E90 E91 Relay Make Contact Orange Bosch 4 Pins Set 1378238
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BMW E60 E63 E87 E90 E91 Relay Make Contact Orange Bosch 4 Pins Set 1378238
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BMW E60 E63 E87 E90 E91 Relay Make Contact Orange Bosch 4 Pins Set 1378238
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BMW E60 E81 E87 E90 E91 X3 E83 Relay Changer Make Contact Salmon Red Set 1742690
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BMW E60 E81 E87 E90 E91 X3 E83 Relay Changer Make Contact Salmon Red Set 1742690
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Alternator Generator Mercedes W176 W246 OM651 Diesel Engine 175A A0009063322
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Mercedes Vito W639 Parking Module PDC Distance Control Unit Sensor A6399003300
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Mercedes W176 W245 Front Left N/S Door Wiring Loom Harness A2465403805
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Mercedes W176 W245 Front Right Door Wiring Loom Harness A2465403005
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Peugeot 3008 Head-Up Display Hud Project Dash Screen Control Unit 96665877ZD
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Speed Sensor Mercedes Sprinter W906 Impuls Control Unit Module A0155429317
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Fuse Box Mercedes W203 W209 Front Relay Control Unit Module SAM A2095451101
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Mercedes ML W164 Front SAM Control Unit Module ECU A1645406501
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Mercedes W204 W212 W222 Auxiliary Additional Generator Battery A0009827008
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Mini Cooper R50 W10 116HP Engine ECU Kit DME 7520019 + EWS 3 + Key Manual
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BMW E81 E87 E90 LCI 120d 320d N47 ECU Kit DDE 8506374 CAS3 + Key Automatic
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BMW F10 F30 F32 LCI 335dX 435dX 535dX N57Z 313HP Control Unit ECU DME 8586536
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Peugeot 3008 USB AUX Connector Interface Adapter Port Socket 96647952XT
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Control Unit BMW F20 F21 F22 F30 F31 F32 F36 Module FEM ECU LR01 9387265
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Mercedes ML W164 Audio Stereo Radio CD Player Head Unit A1648705094
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Mercedes ML W164 Fuse Box Relay Control Unit Module A1645403272
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Mini Cooper R50 1.6 W10 116HP Engine ECU Kit DME 7557395 + EWS + Key Manual
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BMW Z4 E85 2.5si N52 218HP Engine ECU Control Unit DME 7561684 Manual
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BMW X1 E84 18dX Diesel N47N Engine Unit ECU Kit DDE 8580307 CAS3 Key Automatic
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Mercedes-Benz A-Class W176 Mikrophone Roof Control Module A2468200035
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Mercedes ML W164 Fuse Box Relay Control Unit Rear A1645403372
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MINI Cooper R50 R52 R53 W10 116HP Engine ECU Control Unit DME 7545789 Manual
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Renault Trafic II Airbag Module Control Unit ECU Car Safety Sensor 8200969856
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Fuse Box Cover Mercedes W203 W209 Battery Terminal Housing Trim Cap A2035451003
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Mercedes W168 W203 W211 W218 Relay Unit 5-Pin Yellow Hella A0025421219
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Positive Battery Cable BMW F30 F31 F80 M3 F82 M4 Plus Pole Power Red 9259425
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BMW X5 X6 E70 E71 M57N2 Alternator Generator 180A VALEO 7801173
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BMW 3 Series E90 E91 LCI N47N 320d 184HP ECU KIT DDE CAS 3 Key 8512291 Manual
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Radio Player BMW F20 F21 F30 F31 CD DAB Head Unit Audio Player 9335347
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Part no. 8E0971687L
Audi A4 B7 Door Harness Loom Cable Wiring Rear Left Right N/O/S 8E0971687L
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Audi A4 B8 Door Wiring Harness Loom Front Left N/S Cabling 8K0971030M
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Yaw Sensor Mercedes W203 W209 ESP Rotation Rate Control Unit Module A0035423918
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BMW F10 F11 Head Unit Basis Media Navigation System Controller Headunit 9226365
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Peugeot 3008 Body Control Comfort Unit Module BSI Fuse Box 9675877980
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Renault Trafic II Control Unit Sat Nav Navigation Module Unit 280380655R
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Renault Trafic II Control Unit Body Control Module BCM ECU P8200943317
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Mercedes CLK W209 Convertible Rain Light Sensor Windscreen Module A2098203026
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Mercedes W177 W247 M260 Exhaust Control Valve Flap Actuator Drive A2229067403
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Mercedes W906 Fuse Box Relay Control Unit Electric Module SAM A9069003502
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BMW F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM ECU LR01 9280616
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Mercedes W212 E250CDI Blue Efficiency OM651 204HP Engine ECU A6519007401 Key
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Mercedes W203 C209 Yaw Sensor ESP Rotation Rate Control Unit Module A0035429818
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Mercedes Sprinter W906 Fuse Box SAM Control Unit Module A9069004700
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Radio BMW E81 E87 E90 E91 E92 LCI CD Professional DAB 9246503
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Alternator Generator Mercedes Sprinter W906 Engine Diesel 180A 14V A0009068802
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Mercedes Vito W639 Fuse Box Relay Control Unit Electric Module SAM A6399005400
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BMW E60 E87 E90 LCI 120d 320d 520d N47 Engine ECU Kit DDE 7812500 + CAS3 + Key
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Mercedes W204 SAM Module Fuse Box Relay Control Unit A2129008007
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BMW E60 E90 X5 E70 3.0sd 335d 535d M57N2 Engine ECU DDE 7805287 Automatic
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BMW X5 E60 E61 E63 E64 E70 Control Unit Module Passive Go 9134707
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Mercedes W204 Navigation CD Player Radio Sat Nav Head Unit A2049004711
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Mercedes CL203 Antenna Amplifier Control Module Unit Aerial Booster A2038701689
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BMW Z4 E85 2.0i N46 150HP ECU Engine Control Kit DME 7552176 CAS2 Key Manual
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Mercedes C204 Sound Audio Amplifier Unit Harman Becker A2129005213
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Mercedes W204 Rear SAM Module Fuse Box Relay Control Unit A2049060205
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Mercedes W204 SAM Module Fuse Box Relay Control Unit A2129005722
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Mercedes Vito W639 Airbag SRS Module Control Unit ECU Air Bag A0009010201
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Mercedes GLC C253 X253 Pedestrian Protection Pressure Crash Sensor A2539052100
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Mercedes-Benz C E Class W202 W203 W210 Windscreen Rain Light Sensor A2108205710
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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 .