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 E90 N52 325i 525i 218HP Engine ECU Kit DME 7555361 CAS2 Key Automatic
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Audi A6 C7 Central Gateway Control Unit Module Relay ECU 4G0907468AC
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Audi A6 C7 Multimedia Radio CD Player Head Unit 4G0035192H
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Audi A6 C7 BCM Body Comfort Convenience Module Unit ECU 4H0907064CN
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Audi A6 C7 PDC Parking Distance Control Module Unit ECU 4H0919475AA
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Mercedes W169 W245 Aerial Roof Antenna Radio Control Unit Module A1698203775
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Mercedes W169 A180 M266.940 116HP Engine ECU Kit A2661531491 Key Lock Automatic
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Audi A5 8T 2.0 CNCD Petrol Starter Motor 06H911024B
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Mini F55 Petrol Engine ECU Control Module Unit 6821977
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Audi A5 8T Electric Hand Parking Brake Control Unit ECU 8K0907801N
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Audi A5 8T Multimedia Radio Sat Nav Screen Display Head Unit 8R0919604A
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Audi A5 8T 2.0 TFSI CNCD Quattro 224HP Engine ECU Kit 8T2907115 Key Ignition
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Renault Master III Engine Alternator Mounting Bracket Carrier 8200803443
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Mercedes R171 SLK 200 M271.944 163HP Engine Module ECU Kit A2711538579 Key Lock
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Iveco Daily 2.3 Diesel Engine F1AE0481 Unit Module ECU Manual 504121602
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VW Volkswagen Polo 9N 1.4 TDI Alternator Bracket Mount Carrier 045903143E
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Mercedes W164 OM629 Diesel Engine Motor Wiring Loom Cable Harness A6291501933
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Alternator Mercedes ML W164 GL X164 Diesel OM629 Bosch 14V 220A A6291500450
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Audi A4 B8 3.0 TDI Starter Alternator Wiring Loom Cable Harness 8K0971228H
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Mercedes C205 Midline Sound Audio Amplifier Unit A2059000044
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Audi A4 B8 3.0 TDI CAPA Diesel Alternator 04L903017A
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Display Screen BMW E60 E61 E90 LCI 8.8" Monitor Sat Nav 9193745
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BMW F10 PDC Rear View Backup Camera Control Module Unit ECU 9288002
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Audi A4 A5 Q7 Rear Bumper PDC Parking Sensor Ibis White - Y9C 420919275
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Audi Seat Skoda Volkswagen 1.4 TSI Petrol Alternator Generator 110A 03C903023G
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BMW X1 E84 18dX Diesel N47N Engine Unit ECU Kit DDE 8574351 CAS3 Key Automatic
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Mercedes W204 Dashboard Stereo Display Screen Sat Nav Multimedia A2049005205
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BMW Z4 E86 Hifi Audio Sound AMP Amplifier Module 9118611
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BMW 5 F11 Touring Body Control Module ECU Junction Box V7 PL6 JBBFE III 9286943
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Audi Q3 8U Display Screen Multimedia Navigation Sat 8U0857273B
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Audi Q3 8U Air Module Control Unit SRS System ECU 8U0959655B
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Audi Q3 8U Parking Brake Handbrake Module Control Unit 3AA907801H
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Audi Q3 8U A1 8X BCM Body Control Unit Module ECU 8X0907063N
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Mercedes R172 PDC Parking Distance Sensor Control Module Unit A1729000302
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Audi Q2 GA Negative Terminal HV Battery Cable Lead Ground Clamp 5Q0915181J
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Mercedes W177 W247 Driver's Seat Heating Control Unit Module ECU A1679000500
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Audi Q2 GA Head Unit Navigation Multimedia Control Unit MMI 81A035043
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Audi Q2 GA Park Parking Assist PDC Distance Control Unit Module 5QA919294L
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Audi Q2 GA Towing Hitch Trailer Hook Module Control Unit 5H0907383D
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Audi Q2 GA Rear Centre Loudspeaker Subwoofer 81A035382
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Volkswagen Touareg Audi Q7 Water Cooled Alternator 190A 059903015P
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Audi A5 8T Harman Multimedia Sat Navi Radio CD Player Head Unit 8R2035666L
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Audi A5 8T 2.0 TDI CNHA 190HP Engine Control Unit ECU 04L906021BG Automatic
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Audi A5 8T MMI Multimedia Navigation Radio Control Head Unit 4G0035061S
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BMW E87 LCI E90 E91 N43 120i 320i 170HP Engine Unit ECU DME 7599881 Manual
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Audi A4 B8 Headlight Range Module Control Unit ECU 8K0907357B
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Volkswagen Golf Mk7 Air Module Control Unit ECU 5Q0959655M
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Volkswagen Golf Mk7 Gateway Control Unit Module 5Q0907530AA
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Audi A5 8T Audio Amplifier Sound Booster Control Unit Module Unit 8T0035223S
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Audi A4 B8 A5 8T A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181B
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Mercedes W211 Central Gateway Control Unit Module Relay ECU A2115407545
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Mercedes W211 Gearbox Module Transmission Control Unit A0355451532
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BMW 3 Series E90 E91 E92 M3 Engine Alternator Generator Valeo 180A 7838656
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Head Unit BMW F30 F31 F32 Radio Professional CD Player Control Module 9357988
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Mercedes W211 PDC Parking Sensor Module Control Unit A2115457332
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Audi A3 8P 2.0 TDI CBBB Diesel Starter Motor 02M911024P
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Audi A3 8P Boot Trunk Subwoofer Rear Bass Speaker 8P3035382E
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Audi A3 8P Rear Bumper PDC Parking Sensor Wiring Harness Loom 8P0971085A
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Audi A3 8P 2.0 TDI 170HP CBBB Engine ECU Unit Kit 03L906022FD Key + Ignition
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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 .