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 A6 C7 Door Module Control Unit ECU Front Left N/S 4G8959793J
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Audi Q2 GA Negative Terminal HV Battery Cable Lead Ground Clamp 5Q0915181J
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Audi TT FV Navi SD GPS MMI Multimedia Head Unit Module 8S0035021B
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Starter Motor AUDI Q7 4L VW Touareg MK2 3.0 TDI Diesel Starter 059911024K
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Audi Q7 4L Bluetooth Module Multimedia Control Unit ECU 4E0035729A
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Audi A6 C7 Multimedia Radio CD Player Head Unit 4G0035192H
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Audi A3 8P 2.0 TDI 170HP BMN Engine ECU Kit Key + Ignition 03G906018DN Manual
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Fuel Pump Control Audi TT FV A3 8V Petrol Engine Unit Module 5Q0906093
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Audi A3 8P Air Module Control Sensor SRS System ECU Unit 8P0959655H
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Audi A4 B7 1.9 TDI Engine Control Unit Module ECU 03G906016JA Manual Gearbox
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Audi A3 8P BCM Body Control Module Unit ECU 8P0907279N
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Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907064C
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Audi A5 F5 Central Body Control Module BCM Unit ECU 8W0907064GC
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Audi A4 B7 Stereo Radio Sound Audio Amplifier Module Harman Becker 8E5035223D
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Audi TT Mk3 8S 2.0 TDI CUNA 184HP Engine Control Unit ECU 04L907309A Manual
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Audi A5 8T Audio Amplifier Sound Booster Control Unit Module Unit 8T0035223S
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Audi Q7 4L Comfort Control Module Unit ECU 4F0907279D
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Audi TT 8N Battery Fuse Box Power Distribution 8N0937550A
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Audi A4 B6 4.2 BBK Petrol Engine Alternator Generator 079903021D
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Audi A4 B8 2.0 TDI Diesel CAGA Engine Control Unit ECU Kit 03L906022MK Key
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Audi A4 B8 1.8 TFSI CDHA 160HP Engine Control Unit ECU Kit 8K1907115C Manual
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Audi A8L 4H Head Up Display Hud Project Screen Control Unit Module 4H0919604G
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Audi A5 S5 8T BCM Body Control Module Unit ECU 8K0907064GE
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Audi A8L 4H Power Positive Distribution Junction Jumper Box Housing 4H0911075B
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Audi A8 4D Front Seat Memory Adjustment Module Unit Right O/S 4H0959760D
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Audi A3 8P Speaker Tweeter Front Left Right N/O/S Pillar A 8P0035399B
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Audi A5 8T Module Lane Assist Control Unit Rear Right O/S 8K0907566H
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Audi A6 C6 3.0 TDI 240HP CDYA Quattro Engine ECU Kit 4F9910402A Ignition + Keys
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Audi A5 8T Module Lane Assist Control Unit Rear Left N/S 8K0907568H
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Audi A3 S3 RS3 8Y Online Service Bluetooth Control Module Unit 8Y0035282
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Radio CD Player Audi A4 B9 A5 F5 Q5 FY Stereo Sat Nav Head Unit 8W5035035B
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Audi A7 4G 3.0 TDI Alternator Generator 059903018TX
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Audi S8 D3 S6 C6 Alternator Water Cooled 190A 14V 5.2 FSI V10 079903021J
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Audi A4 B8 A5 8T 2.0 TDI CGLD Engine Control Unit ECU 03L906018JH Manual
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Audi A4 B7 Door Harness Loom Cable Wiring Rear 8E1971687L
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Audi Q3 8U 2.0 TDI CUWA Fuel Pump Relay Control Unit Module ECU 5Q0906121M
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Audi A4 B9 Antenna Amplifier Aerial Control Module Unit 4M0035456A
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Audi RS3 8Y 2.5 TFSI Quattro 400HP DNWC Engine Unit ECU 07K907309L Automatic
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Audi A6 C6 Electric Parking Hand Brake Module Control Unit ECU 4F0907801B
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Audi Q7 4L Radio Head Unit Navi CD DVD Player Changer 4L0910110A
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Audi A4 B7 2.0 TFSI BWE 200HP Engine Control ECU 8E0910115K Manual
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Stereo Radio Amp Audi A5 F5 Sound System Speaker Amplifier 8W0035465
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Audi A4 B7 Door Wiring Harness Loom Front Cabling 8E1971029AA
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Audi A6 C7 Fuel Pump Control Unit Module 4G0906093F
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Audi S8 A8 D3 4E Air Shock Absorber Sensor Damper Front Left N/S 4E0616575K
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Audi A1 8X Starter Motor Petrol Engine Electrical Unit Actuator 02M911024J
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Audi A4 B8 A5 8T Front Lamp Headlight Range Control Module 8K5907357B
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Audi A4 B8 Door Wiring Harness Loom Front Cabling 8K0971029M
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Audi A3 S3 8Y Engine Alternator Generator Electric Unit 14V 140A 06K903026C
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Audi A3 8P Engine Alternator Generator 14V 140A 1.8 TFSI CDAA 06H903017E
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Audi A5 8T Door Module Control Unit ECU Front Driver's Side 8T0959793J
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Audi A4 B7 Air Module Control Unit ECU Impact Sensor 8H0959655G
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Audi A6 C7 2.0 TDI CGLC BCM Body Control Module Unit ECU 4H0907063BN
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Audi A5 8T Display Screen Dashboard Multifunction Monitor Unit 8T0919604A
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Audi TT 8J Audio Amplifier Radio Sound BOSE Unit 8J0035223D
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Audi A5 8T Onboard Comfort Supply Control Module Unit ECU 8K0907063AC
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Audi A4 B9 2.0 TFSI CVKB Petrol Engine Starter Motor 06L911021
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Audi A5 F5 Rear Hatch Tailgate Boot Lid Control Module Unit ECU 8W8959107D
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Part no. 057911022
Audi Q7 4M Engine Starter Motor Actuator Starter Valeo 3.0 TDI Diesel 057911022
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Fuel Pump Audi A8 D4 Q7 4L Diesel Control Unit Module 4H0906093D
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Part no. 8H0959255A
Audi A4 B7 Cabrio Folding Top Roof ECU Module Control Unit 8H0959255A
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Audi A5 8T Body Control Comfort Unit Convenience Module BCM1 ECU 4H0907063DB
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Audi A4 B7 2.0 TFSI Starter Motor Engine Motor Actuator Petrol 03L911021E
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Audi A3 8V 2.0 TDI DFGA Diesel Starter Motor 02E911022C
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Audi A4 B7 Convertible Rear Speaker Amplifier Blaupunkt Right O/S 8H0035223E
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Audi A5 8T 1.8 TFSI Starter Alternator Harness Wiring Cable 8K2971228G
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Audi Q5 FY Body Control Comfort Unit Module BCM Convenience Unit ECU 4N0907064AP
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Audi Q7 4L Quattro Diesel 3.0 TDI Charge Air Pressure Valve Actuator 059906627L
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Audi A3 8P Control Unit Gateway Module ECU 8P0907530C
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Audi Q7 4L 4.2 TDI Quattro Engine Starter Motor Actuator 057911023E
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Audi A1 8X 1.4 TSI Engine Wiring Loom Harnes 03C971612BR
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Audi Q5 8R 2.0 TFSI CNCD 224HP Engine Unit ECU Kit 8R2907115 Key Ignition Manual
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Audi A8L 4H Voltage Converter Stabilizer Control Module Unit ECU 8K0959663C
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Audi A4 B7 Aerial Antenna Amplifier Module 8H0035225R
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Audi Q7 4L Head Unit Radio Player Navigation Control Module Alpine 4L2035670J
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Audi A6 C6 Front Windscreen Rain Light Solar Sensor Unit 4E0955559C
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Audi A3 8P Central Gateway Control Unit Module Relay ECU 1K0907530D
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Audi S5 8T Quattro 4.2 FSI Petrol V8 CAUA Alternator Genarator Valeo 079903015F
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Audi A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181C
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Part no. 8E0907279K
Audi A4 B7 Body Control Module BCM Comfort Control Unit Power Supply 8E0907279K
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Audi A3 8P Volkswagen Tiguan 7N Gateway Module Central Control ECU 7N0907530N
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Audi A3 8P Convertible Roof Control Module ECU 8P7959255
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Part no. 8P0959655S
Audi A3 8P Air Module Control Sensor SRS System ECU Unit 8P0959655S
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Audi Q2 GA Diesel Engine Alternator Generator Assembly Bosch 04L903024T
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Part no. 4L0910553L
Audi Q7 4L Body Comfort Control BCM Onboard Supply Module Unit ECU 4L0910553L
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Audi Q5 FY Battery Positive Cable Clamp Control Module Terminal 80A915459
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Part no. 4F0907279B
Audi A6 C6 Body Control Comfort Unit Module BCM Convenience Unit 4F0907279B
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Part no. 8R0035223H
Audi A4 B8 A5 8T Q5 8R Audio Amplifier Sound Module Control Unit 8R0035223H
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Audi Q3 8U Sat Navi Stereo Radio Audio Head Unit CD Player 8U1035192A
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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 .