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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Starter Motor Mercedes W169 W245 Diesel Engine A0051517401
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BMW E60 M57 Engine Starter Motor 7794952 0001115041
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Mercedes W221 Prefuse Fuse Distribution Box Unit Front A2215401250
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BMW E81 Footwell ECU Light Control Module MAX Kuester FRM3R 6827065
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Audi A4 B9 Antenna Amplifier Aerial Control Module Unit 4M0035456A
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Mercedes SLK R172 W212 Rear Fuse Box SAM Relay Control Unit Module A2129004830
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BMW Mini Clubman R55 Cable Wiring Loom Splitdoor Door Rear Right O/S 9198760
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BMW 5 Series E60 E61 Cable Door Rear Left Right N/O/S Wiring Harness 6966643
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Mercedes W203 C200 Kompressor 163HP M271.940 Engine ECU Kit A2711534279 Key Lock
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BMW F10 M5 F12 M6 Ignition Engine Wiring Harness Ignition Module Cyl.5-8 7843326
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VW Volkswagen LT 35 BBF 95HP Engine Control Unit Module ECU 074906018BD Manual
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Navigation Monitor Screen BMW E60 E90 On-board Information Display 6,5" 6945661
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Ignition Switch Mercedes C238 Electronic Anti Theft Control Module A2139005023
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Audi A5 8T 2.0 TFSI CDNB Automatic Gearbox Module Control Unit 8K0927155AA
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Mercedes W221 Rear Door Module Control Unit Left N/S ECU A0038207326
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BMW E39 523i E46 323Ci M52 170HP Engine ECU Module DME 7500255 Automatic
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Mercedes W220 Headlight Head Lamp Control Module Unit A2208203685
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Audi A5 8T Display Screen Radio Multimedia Navigation Display 8T0919603C
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Mini Cooper R60 Control Unit Light Module High EKS ECU PL3 FRM3R 3456395
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Mini Cooper One R50 R52 R53 Radio Boost CD Player Unit Head Control 6927904
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Mercedes W169 W245 A150 B150 M266.920 95HP Engine ECU Kit A2661530391 Key Lock
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BMW E87 LCI E90 E91 120i 320i Petrol N43 170HP ECU KIT DME 7575665 CAS3 + Key
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Mercedes GLE C292 Coupe Trunk Lid Module Automatic Closing A2929007101
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VW Volkswagen Caddy Maxi Interior SRS Air Module Unit Control Sensor 2H0959655B
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BMW E91 Light Control Module ECU PL2 FRMFA Lear 61359128183 9128183
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BMW X3 Z4 Series E83 E85 E86 Radio Business CD Player 9197127 9205279
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Mercedes SLK R172 Rear SAM Fuse Relay Box Control Unit Module A1729060205
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Wiring Harness Mercedes W221 OM642 Engine Wiring harness Loom A6421509089
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Parking Sensor BMW F20 F21 F22 F23 F30 F34 GT PDC Module Control Unit 7938190
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Battery Cable Volkswagen VW Golf Mk5 Positive Plus Pole Lead 1K0971228M
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Mercedes GLE250 W166 OM651.960 204HP Engine ECU Kit Ignition + Key A6519004201
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BMW F20 F21 F22 F30 F31 F32 Radio Professional CD Player 9281519
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BMW F22 F30 F32 220i 320i 420i Petrol N20 184HP ECU Kit DME 8631725 + Key + FEM
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CD Changer BMW X5 E70 X6 E71 Mini R55 R56 R57 6 Disc Changer Unit 9125237
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Head Unit BMW F10 F20 F22 F30 Navigation Sat Nav GPS Unit High 9387565
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Mini Cooper One R50 Petrol W10 Engine Wiring Loom Harness Module 7533097
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BMW E87 Front Bumper PDC Wiring Loom Cable Harness Parking Sensors 7837455
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Mercedes SLK R171 Crash Sensor Air Bag Impact Module Control Unit A0028201326
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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 .