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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In Stock
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Part no. 3Q0907530AC-1
Audi Q2 GA Gateway Diagnostics Interface Control Module 3Q0907530AC
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 04L907309K-1
Audi Q3 8U 2.0 TDI Quattro Engine ECU Kit 04L907309K Ignition + Key
£132.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 5QF959655BQ
Audi Q2 GA Air Module Control Unit 5QF959655BQ
£180.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 04E906016DF-1
Audi A3 8V 1.4 TFSI CXSA 122HP Engine ECU Module Kit 04E906016DF Key + Ignition
£142.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0035670R
Audi A8L 4H Multimedia Radio Sat Nav CD Player SD SIM Head Unit 4H0035670R
£379.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 05L907309-1
Audi A5 F5 2.0 TDI DEZE 163HP Engine ECU Kit BCM2 + Key 05L907309 Automatic
£455.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8H0035225L
Audi A4 B7 Cabrio Aerial Antenna Amplifier Module Unit Right O/S 8H0035225L
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4E0910110C
Audi A6 S6 C6 6-Disc CD Changer Magazine Head Unit MMI 4E0910110C
£32.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4E0907476
Audi A6 C6 FL Xenon Headlight Light Ballast Control Unit 4E0907476
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P0971085A
Audi A3 8P Rear Bumper PDC Parking Sensor Wiring Harness Loom 8P0971085A
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5QA919294L
Audi Q2 GA Park Parking Assist PDC Distance Control Unit Module 5QA919294L
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 6C0907361E
Fuse Box Audi A1 Seat Ibiza Control Module Relay Box 6C0907361E
£56.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-8R2035666B
Audi S8 8T Head Unit Radio Player Navigation Control Module 8R2035666B
£113.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-8T2035195AA
CD Player Audio Audi A4 B8 A5 8T Stereo Radio Head Unit 8T2035195AA
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0907468AB
Audi A6 C7 Gateway Module Control Unit ECU 4G0907468AB
£85.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 07K907309L
Audi RS3 8Y 2.5 TFSI Quattro 400HP DNWC Engine Unit ECU 07K907309L Automatic
£759.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 8T0959792J
Audi A5 S5 8T Door Module Control Unit Front Passenger Side 8T0959792J
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0920950J
Audi A4 B8 Instrument Cluster Speedo Clocks Diesel Manual 8K0920950J
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0937084AE
Audi A3 8V Module BCM Body Control Unit Module ECU 5Q0937084AE
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W1959595D
Audi Q5 FY Rear Door Control Module Unit Left Right N/O/S 8W1959595D
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 06K907309B
Audi TT FV 2.0 TFSI DKZB Engine Control Unit Module 06K907309B Automatic
£113.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0907697F
Audi TT FV LED Headlight Ballast Module Daytime Running Lights Unit 4G0907697H
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 04L907309AB-2
Audi Q3 8U 2.0 TDI DFTA 150HP Quattro Engine ECU Kit Ignition + Key 04L907309AB
£132.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0919294G
Audi A3 8V PDC Parking Distance Control Sensor Module Unit ECU 5Q0919294G
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0959754H
Audi A5 8T Remote Button Smart Key Fob Unit 8K0959754H
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-5N2971111Q
Audi Q3 8U Mechanical Steering Column Wiring Harness Loom Cable 5N2971111Q
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0035061D
Audi A4 B8 A5 8T MMI Multimedia Navigation Radio Control Head Unit 4G0035061D
£170.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K5907311
Audi A4 B8 A5 8T 3.0 TDI CLAB 204HP Engine Control Unit ECU 8K5907311 Automatic
£189.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P3035382E
Audi A3 8P Boot Trunk Subwoofer Rear Bass Speaker 8P3035382E
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 3Q0907338P
Audi Q2 GA Headlight Light Headlamp Lamp Control Module Unit ECU 3Q0907338P
£85.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8T0919611-1
Audi A4 B8 Head Unit Media Player Controller Knob Switch Panel 8T0919611
£56.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0971235A
Audi A4 B9 Negative Battery Terminal Cable Harness Wiring Loom 8W0971235A
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8T0959795F
Audi A5 8F Window Lifter Module Control Unit Rear Left Right N/O/S 8T0959795F
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0857273P-1
Audi A3 8V Multimedia Display Screen Radio Sat Nav Head Unit 8V0857273P
£56.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P0862335N
Audi A3 8P TT 8J Interface Bluetooth Control Module Harman Becker ECU 8P0862335N
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-8K2971072QL
Audi A4 B8 Engine Wiring Loom Harnes Cable 8K2971072QL
£56.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0971693M
Audi A4 B9 A5 F5 Door Wiring Loom Harness Cable Rear Left Right N/O/S 8W0971693M
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 3C0915336A
Audi A3 8P Battery Box Tray Covering Housing Trim Holder Bracket 3C0915336A
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 03L906018LA-1
Audi A6 C7 2.0 TDI CGLC 177HP Engine Unit ECU Kit 03L906018LA 2 Keys Ignition
£142.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 8U0907468G
Audi Q3 8U Gateway Interface Control Module Unit ECU 8U0907468G
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-4G0035666F
Audi S7 4G8 Multimedia Stereo Sat Nav SD CD Player Radio Head Unit 4G0035666F
£189.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8X0919475N
Audi Q3 8U PDC Assistance Parking Distance Control Module Unit ECU 8X0919475N
£51.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8H0959655G
Audi A4 B7 Air Module Control Unit ECU Impact Sensor 8H0959655G
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0035020C
Audi A3 8V Dashboard Sat Navigation Unit System 8V0035020C
£417.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 038907281B
Audi A6 C6 2.0 TDI Glow Plug Relay Unit Control Module 038907281B
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 2Q0980653G
Audi Q2 GA Front Camera Module Lane Assist Control Unit 2Q0980653G
£47.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0959592E
Audi A4 B9 Front Door Control Module Unit Passenger Side ECU 8W0959592E
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0907551
Audi A4 S4 B8 3.0 TFSI 333HP CAKA Quattro Engine Control Unit ECU 8K0907551
£142.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 8R0971765C
Audi Q5 8R AdBlue Wiring Harness Cable 2.0 TDI Diesel Wiring 8R0971765C
£47.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8T0919603C
Audi A5 8T Display Screen Radio Multimedia Navigation Display 8T0919603C
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 0C8927750AL
Audi Q7 4L 3.0 TDI Automatic Gearbox Module Control Unit ECU Diesel 0C8927750AL
£142.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4E0910110E
Audi S6 C6 6-Disc CD Changer Magazine Head Unit MMI 4E0910110E
£32.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-8R2035186
Audi A4 B8 A5 8T Multimedia Radio CD Player Unit 8R2035186
£61.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 1S0919275-PEG
Audi A5 8T Parking Sensor Control Unit Module Pepper Grey Metallic D7R 1S0919275
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0907508
Audi RS6 C7 Acceleration Engine Sensor Module Control Unit ECU 4H0907508
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8S0915181C
Audi Q5 FY A5 Negative Battery Terminal Cable Wiring 8S0915181C
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5WA937086BE-1
Audi S3 8Y Module BCM Body Control Unit Module ECU 5WA937086BE
£170.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0962239A
Audi A8 D4 Rear Hatch Boot Lid Tailgate Opening Cable Wiring Line 4H0962239A
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0971553
Audi A3 8V Front Seat Side Air Module Wiring Harness Loom Cable 8V0971553
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 06M907309D-3
Audi SQ5 FY 3.0 TFSI 355HP CWGD Quattro Engine ECU Kit 06M907309D Gateway + Key
£237.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8X0907063K
Audi A1 8X Body Control Module Unit ECU 8X0907063K
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4L2035670J
Audi Q7 4L Head Unit Radio Player Navigation Control Module Alpine 4L2035670J
£469.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 8J0971237A
Audi TT 8J Starter Motor Negative Battery Wiring Harness Cable 8J0971237A
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-5Q2971111CC
Audi A3 8V Power Steering Rack Wiring Harness Loom Cable 5Q2971111CC
£51.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8E0907500
Audi A4 S4 B6 Fuse Box Holder Support Mounting 8E0907500
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8T0971035A
Audi A5 8T Coupe Front Door Wiring Loom Harness Driver's Side 8T0971035A
Product currently unavailable
Part no. 8K0907064DP
Audi A4 B8 Body Control Module BCM Comfort Control Unit 8K0907064DP
Product currently unavailable
Part no. 8X0919475M
Audi Q3 8U PDC Parking Assistance Control Module Unit ECU 8X0919475M
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8J0915459
Audi A4 B8 A5 8T TT MK2 Positive Battery Terminal Cable Overload Fuse 8J0915459
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0907637K
Audi A8L 4H Yaw Rate Domain Control Module Unit ECU 4H0907637K
£184.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W8971687M
Audi A5 F5 Sportback Door Wiring Harness Loom Rear Left N/S 8W8971687M
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4M0971228DH
Audi Q7 4M Q8 Mk1 Starter Motor Wiring Harness Cable Line 4M0971228DH
£94.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 03L906018AB
Audi A3 8P CFFB 2.0 TDI 140HP Diesel Engine Control Unit ECU 03L906018AB Manual
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. rhd-8K2971845A
Audi A1 8X Fuse Box Relay Control Unit Module 8K2971845A
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 03C906016F
Audi A3 8P 1.4 TFSI CAXC 125HP ECU Engine Control Unit 03C906016F Manual
£118.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-4G2927451A
Audi A7 4G Lane Change Control Switch Button Panel Driver Side 4G2927451A
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W6971036L
Audi A5 S5 F5 Front Door Wiring Loom Harness Cable Left N/S Side 8W6971036L
£66.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0959792J
Audi A4 B8 Door Module Front Left N/S Control Unit Module ECU 8K0959792J
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4N0959651D
Audi Q5 FY Crash Impact Sensor Unit Module Left Right N/O/S 4N0959651D
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K1907401K
Audi A4 B8 8K A5 8T 2.7 TDI 190HP CGKA Engine Control ECU 8K1907401K Automatic
£75.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0907159A
Audi A7 4G8 Alarm Module Body Impact Sound Signal Control Unit 4G0907159A
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4F0910223K
Audi A6 S6 C6 Amplifier Audio Sound Control Unit Module Controller 4F0910223K
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0907063BE
Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907063K
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4E0035785B
Audi Q7 4L S8 D3 Interface Control Unit Module 4E0035785B
£85.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4L0698007A
Audi Q7 4L Air Suspension Level Height Adjustment Compressor Pump 4L0698007A
£89.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 6C0971225
Audi A1 8X 1.6 TDI Battery Positive Cable Plus Pole Wiring Harness 6C0971225
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 04L906021CK
Audi Q5 8R 2.0 TDI CNHA Quattro 190HP Engine Unit ECU Kit 04L906021CK Automatic
£332.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 5QS959655A
Audi A3 S3 8Y Air Module Crash Impact Sensor Unit Control ECU 5QS959655A
£256.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0906259F
Audi A3 S3 8V 2.0 TFSI CJXC 300HP Quattro Engine Control Unit ECU 8V0906259F
£132.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 1K0906093F
Fuel Pump Control Audi A3 8P VW Golf Mk6 Relay Module Unit ECU 12V 1K0906093F
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-4M2971111Q
Audi Q7 4M Electric Steering Mechanism Cable Loom Harness 4M2971111Q
£56.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8U0857273A
Audi Q3 8U Multimedia Display Screen Radio Sat Nav Head Unit 8U0857273E
£56.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8Y0959593L
Audi Q3 A3 S3 8Y Front Driver's Door Module Control Unit ECU 8Y0959593L
£56.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 3Q0941329
Volkswagen Skoda Seat Audi Diesel Engine Adblue Module Control Unit 3Q0941329
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4L0971035G
Audi Q7 4L Door Card Wiring Harness Cable Loom Front Driver's Side 4L0971035C
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 7L0937503D
Audi Q7 4L Fuse Box Relay Control Unit Module 7L0937503D
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 7PP907283
Audi RS6 C7 Tire Tyre Pressure Monitor System Moduel Control Unit ECU 7PP907283
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 06L907425C-2
Audi Q5 FY 2.0 TFSI DAXB 252HP Quattro Engine ECU Kit Gateway + Key 06L907425C
£398.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P4035223B
Audi S3 8P Audio Sound BOSE Amplifier Stereo System Module 8P4035223B
£113.95
Free delivery - Mon, Dec 01
If paid before 14:00
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 .