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 S8 D3 Access Start Comfort Kessy Control Module 4E0907181A
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Audi A4 B8 Door Wiring Harness Loom Rear Left N/S Cabling 8K0971687S
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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 Sat Navi Navigation Drive Reader DVD Player Unit 4E0919887D
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Audi A1 8X Engine Control Unit Module ECU 1.4 TSI CAXA 122HP03C906016BG
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Audi Q2 GA Wireless Charger Centre Console Phone Charging Module Unit 4N0035502B
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Audi Q5 FY Front Door Control Module Unit Right O/S Side 8W1959593
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Rear Bumper PDC Audi A5 Sensor Parking Distance Control 420919275 1706091849
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Audi A3 8P PDC Parking Distance Control Sensor Module Unit ECU 8P0919283
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Audi A4 B8 2.0 TDI CAGA Diesel Engine Starter Motor Bosch Unit 03L911021C
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Audi A4 B8 Door Wiring Harness Loom Front Left N/S Cabling 8K0971030M
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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 B8 A5 8T Power Steering Wiring Harness Cable Loom 8K2971111A
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Audi A3 8P Yaw Sensor ESP Rotation Rate Control Unit Module 1K0907655A
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Audi A7 4G8 Central Gateway Control Lear Module Unit ECU 4G0907468G
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Audi A4 B9 Rear Bumper PDC Wiring Parking Sensor Loom Harness 8W9971104T
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Audi Q7 4L Trailer Hook Tow Bar Control Module Unit 4E0907383C
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Audi Volkswagen Varta Car Battery AGM 12V 75Ah 800A 7P0915105A
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Audi A6 A7 4G 3.0 TDI Starter Alternator Wiring Harness 4G2971228DQ
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Audi A5 8T Alternator Generator Electrical Unit 150A 14V 3.0 TDI 059903019N
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Audi A8 4E S8 D3 Head Unit Interface Control Module 4E0910732A
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Audi S3 8Y Keyless Entry Control Module Unit ECU 5WA959436Q
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Audi A6 C6 CD DVD Navigation Sat Nav Head Unit 4F0035769B
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Audi Q5 FY Rear Door Wiring Harness Loom Cable Left Right N/O/S 80A971687Q
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Audi A1 8X Front Passenger Door Wiring Harness Loom Cable Left N/S 8X2971030K
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Audi A6 C7 Front Seat Control Module Unit Right O/S 4G8959760
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Audi A4 B8 A5 8T Front Lamp Headlight Range Control Module 8K5907357B
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Audi SQ5 8R 3.0 TDI CGQB Quattro 313HP Engine Control ECU 8K5907589 Automatic
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Audi A1 8X Air Module Control Sensor SRS System ECU Unit 8XA959655
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Audi A4 B7 Door Harness Loom Cable Wiring Rear Left Right N/O/S 8E0971687L
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Audi Q2 GA Towing Hitch Trailer Hook Module Control Unit 5H0907383D
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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 S3 8V 2.0 TFSI CJXC 300HP Quattro Engine ECU Kit 06K907425B Ignition + Keys
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Audi TT 8N Tray Cover Battery Fuse Box Power Distribution 8N0937557
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Audi TT 8J Petrol Engine Starter Motor 2.0 TFSI BWA 02E911023J
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Audi A5 F5 Communication Telematics Emergency Control Module Unit ECU 4KE035282C
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Audi A4 B8 Radio Stereo CD Player Reader Head Unit MMI Multimedia 8R2035186F
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Audi A3 8P Gateway Module Control Unit Gateway Module ECU 8P0907530A
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Audi A3 8V 2.0 TDI CRLB Diesel Alternator 03F903023D
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Audi Q7 4L Parking Control Unit ECU Module Sensor PDC 4F0919283H
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Audi Q3 8U Amplifier BOSE Premium Audio Sound System Module 8X0035223D
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Audi A7 4G8 Tailgate Lift Boot Lid Control Unit Module Trunk 4G8959107N
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Audi Q7 4L 3.0 TDI Quattro Engine Starter Motor Actuator Starter 059911024H
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Audi TT 8N Battery Fuse Box Power Distribution 8N0937550E
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Audi A5 8T Display Screen Radio Multimedia Navigation Display 8T0919603C
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Audi RS4 B8 Front Bumper PDC Wiring Park Assist Sensor Harness 8K0971095G
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Audi A4 B9 Q5 FY Body Control Comfort Unit Module BCM Unit ECU 8W0907063CH
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Audi TT 8J ESP YAW Lateral Acceleration Sensor 7E0907655A
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Audi A4 B8 Glove Box Passenger Air Module Switch Wiring Harness Cable 8K0971679B
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Audi Q3 8U Petrol Alternator Generator 14V 140A 06J903023B
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Audi A4 B7 Cabriolet Roof Motor Wiring Harness Wiring Loom 8H0972387
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Audi A3 S3 8V Front Door Wiring Harness Loom Cable Passenger Side 8V4971030AD
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Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023L
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Audi A4 S4 B7 Servotronic Steering Control Unit Module 8E0907307G
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Audi A3 8V MMI Multimedia Interface Unit Module Control ECU 8V0035036E
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Part no. 8X0907063AF
Audi Q3 S Line BCM Body Control Module Unit ECU 8X0907063AF
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Audi A6 C6 2.0 TDI Alternator Generator 180A 14V 03G903016A
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Part no. 4L0907568A
Audi Q7 4L Blind Spot Monitoring Radar Unit 4L0907568A
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Audi A4 B7 Stereo Radio Sound Audio Amplifier Module Harman 8E5035223
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Audi S8 D3 Multimedia Display MMI Mechanism Carbon Fiber Look 4E0919603K
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Audi A5 8T Sound System Audio Amplifier Amp Unit Bang & Olufsen 8T0035223M
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AUDI Q7 4L Lane Assist Module Blind Spot 4L0907566A
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Part no. 02Z911024Q
Audi A3 8V 2.0 TDI Quattro Starter Motor Engine Diesel Bosch 02Z911024Q
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Part no. 8R1035223A
Audi A4 B8 A5 8T Sound System Amplifier Control Module ECU 8R1035223A
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Audi TT 8N Mk1 1.8T Petrol Engine Starter Motor Assembly 0001121022 02M911023
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Audi A6 C7 A7 4G Onboard Supply BCM Body Control Module Unit ECU 4H0907063CG
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Part no. 8U0035193CX
Audi Q3 8U Head Unit Navigation Multimedia Control Unit 8U0035193CX
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Part no. 4H0907801E
AUDI A7 4G8 Electric Handbrake Control Module TRW 4H0907801E
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Audi Q7 4M Gateway Interface Control Unit Module ECU 4KE907468F
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Audi A5 8T 2.0 TFSI CNCD Quattro 224HP Engine ECU Kit 8T2907115 Key Ignition
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Audi A5 8T Headlight Range Headlamp Control Unit Module ECU 8K0907357A
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Audi TT 8J Interior Roof Alarm Motion Ultrasonic Sensor 8J0951177
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Audi Q3 8U Engine Injector Module Wiring Harness Cable 2.0 TFSI 06J971082E
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AUDI A7 4G8 Parking Assist Sensors Distance Control Module 4H0919475N
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Audi Q7 4L Diagnostic Interface Gateway Control Module Unit ECU 4F0907468N
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Audi A4 B8 Petrol Engine Starter Motor Actuator 1.8 2.0 TFSI 06H911021D
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Audi A4 B8 2.0 TDI Alternator Mount Tensioner Pulley Bracket Support 03L903143K
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Audi A5 8T Navigation System Car Sat Nav Computer Head Unit 4F0919887M
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Audi A6 C7 2.0 TDI CGLC 177HP Engine Unit ECU Kit 03L906018LA BCM2 Key Ignition
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Audi A6 C7 Saloon CCM Comfort Control Module Onboard Unit ECU 4H0907064BN
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Audi A4 B7 On Board Fuse Box BCM Body Comfort Control Module ECU Unit 8E0907279L
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Audi A7 S7 4G8 A8 D4 4.0 TFSI Starter Motor Denso Petrol Engine 079911024
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Audi RS6 C7 4.0TFSI CRDB 560HP Engine Control Unit ECU 4G0906560 Automatic
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Audi A6 C6 MMI Multimedia Sat Nav Navigation Control Head Unit 4E0035652A
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Audi A4 B9 Front Centre Dashboard Tweeter Speaker 8W0035454
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Audi A4 B9 2.0 TFSI CVKB 190HP Engine Control Unit ECU 06L907309A Automatic
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Audi Q7 4L 3.0 TDI V6 Diesel Engine Cable Wiring Duct Channel Cover 059971341E
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Part no. 4L0919283E
Audi Q7 4L PDC Parking Distance Sensor Control Module Unit ECU 4L0919283E
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Audi A4 B8 Parking Brake Control Module Unit ECU 8K0907801K
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Fuse Box Audi A3 8P Volkswagen Golf Mk5 Cover Trim Panel Housing 1K0937125C
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Part no. 4E0907801B
Audi A8 S8 D3 Electric Parking Brake Module Handbrake Control Unit 4E0907801B
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Part no. 8P7959255
Audi A3 8P Convertible Roof Control Module ECU 8P7959255
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Audi A5 8T Radio Head Unit Navi CD DVD Player Changer 8T2035110B
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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 .