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. 4H0907508
Audi RS6 C7 Acceleration Engine Sensor Module Control Unit ECU 4H0907508
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5WA937086BE-1
Audi S3 8Y Module BCM Body Control Unit Module ECU 5WA937086BE
£170.95
Free delivery - Wed, Dec 17
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 - Wed, Dec 17
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 - Wed, Dec 17
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 - Wed, Dec 17
If paid before 14:00
Part no. 4L2035670J
Audi Q7 4L Head Unit Radio Player Navigation Control Module Alpine 4L2035670J
£469.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 8J0971237A
Audi TT 8J Starter Motor Negative Battery Wiring Harness Cable 8J0971237A
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8E0907500
Audi A4 S4 B6 Fuse Box Holder Support Mounting 8E0907500
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8T0971035A
Audi A5 8T Coupe Front Door Wiring Loom Harness Driver's Side 8T0971035A
£18.95
Free delivery - Wed, Dec 17
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 - Wed, Dec 17
If paid before 14:00
Part no. 4H0907637K
Audi A8L 4H Yaw Rate Domain Control Module Unit ECU 4H0907637K
£184.95
Free delivery - Wed, Dec 17
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 - Wed, Dec 17
If paid before 14:00
Part no. 4M0971228DH
Audi Q7 4M Q8 Mk1 Starter Motor Wiring Harness Cable Line 4M0971228DH
£94.95
Free delivery - Thu, Dec 18
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 - Wed, Dec 17
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 - Wed, Dec 17
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 - Wed, Dec 17
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 - Wed, Dec 17
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 - Wed, Dec 17
If paid before 14:00
Part no. 4G0907159A
Audi A7 4G8 Alarm Module Body Impact Sound Signal Control Unit 4G0907159A
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4E0035785B
Audi Q7 4L S8 D3 Interface Control Unit Module 4E0035785B
£85.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4L0698007A
Audi Q7 4L Air Suspension Level Height Adjustment Compressor Pump 4L0698007A
£89.95
Free delivery - Wed, Dec 17
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 - Wed, Dec 17
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 - Thu, Dec 18
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 - Wed, Dec 17
If paid before 14:00
Part no. RHD-4M2971111Q
Audi Q7 4M Electric Steering Mechanism Cable Loom Harness 4M2971111Q
£56.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8U0857273A
Audi Q3 8U Multimedia Display Screen Radio Sat Nav Head Unit 8U0857273E
£56.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 3Q0941329
Volkswagen Skoda Seat Audi Diesel Engine Adblue Module Control Unit 3Q0941329
£13.95
Free delivery - Wed, Dec 17
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 - Wed, Dec 17
If paid before 14:00
Part no. 8E0880201DG
Audi A4 B7 A5 8T Steering Wheel Air Module Driver's Side 8E0880201DG
£32.95
Free delivery - Wed, Dec 17
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 - Wed, Dec 17
If paid before 14:00
Part no. 5WA959436M
Audi A3 8Y Keyless Control Module Unit ECU 5WA959436M
£61.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8K0907551-1
Audi S4 B8 3.0 TFSI 333HP CAKA Quattro Engine ECU Kit 8K0907551 Automatic
£208.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 03G906016MF
Audi A6 C6 2.0 TDI BRE 140HP Engine Control Unit ECU 03G906016MF Automatic
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4M2035070B
Audi Q7 4M Multimedia Navigation Player Radio Audio Head Unit 4M2035070B
£465.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8E0959655G
Air Module Audi A4 B6 B7 ECU Control Unit Crash Sensor Air 8E0959655G
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4L0971029J
Audi Q7 4L Door Card Wiring Harness Cable Loom Front Driver's Side 4L0971029J
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8E0907279K
Audi A4 B7 Body Control Module BCM Comfort Control Unit Power Supply 8E0907279K
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4H0951253E
Audi Q7 4M Engine Relay 4 Pin 40A 4H0951253E
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8E5035223D
Audi A4 B7 Stereo Radio Sound Audio Amplifier Module Harman Becker 8E5035223D
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8X0907357B
Audi A1 8X Q3 8U Headlight Head Lamp Range Control Unit Module ECU 8X0907357B
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8K0937517B
Audi RS4 B8 Positive Battery Distribution Terminal Junction Relay Box 8K0937517B
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8W5035021
Audi A4 B9 Multimedia MMI Radio SD Player Stereo Sat Nav Head Unit 8W5035021
£550.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 8J0035456
Audi S5 8T Antenna Amplifier Aerial Control Module Unit ECU 8J0035456
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4L0971036A
Audi Q7 4L Door Card Wiring Harness Cable Loom Front Passenger Side 4L0971036A
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8W0907163
Audi AQ5 FY Rear Differential Control Module Unit QMV 8W0907163
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8W0971104A
Audi A4 B9 Rear Bumper Cable PDC Parking Sensor Wiring Harness Loom 8W0971104A
£32.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4M2035070C
Audi Q7 4M CD Player Radio Multimedia Audio Head Unit 4M2035070C
£284.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4F1941824A
Audi A5 F5 Fuse Box Control Module Connector Plug Socket Wiring Loom 4F1941824A
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4F9035225AA
Audi A6 C6 Antenna Amplifier Control Unit Module 4F9035225AA
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 431951253D
Audi TT 8N Relay Unit Module 431951253D
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4L0971030J
Audi Q7 4L Door Card Wiring Harness Cable Loom Front Passenger Side 4L0971030J
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8W0907777L
Audi RS5 F5 Chassis Module Control Unit 8W0907777L
£265.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 5Q0915321J
Audi Q2 Seat Leon VW Golf Battery Tray Holder Mounting Bracket 5Q0915321J
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8K0907383B
Audi A5 8T Towbar Trailer Hitch Control Module Unit ECU 8K0907383B
£70.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8W0035192K
Audi A4 B9 Multimedia Stereo Sat Nav SD CD Player Radio Head Unit 8W0035192K
£189.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 8K0941824A
Audi A1 A4 A6 A7 A8 Fuse Box Connector Socket Module Unit 8K0941824A
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8W0959655H
Audi A4 B9 RS5 F5 Air Module Control Unit SRS Sensor ECU 8W0959655H
£265.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 8V3971036J
Audi A3 S3 8V Door Card Wiring Harness Passenger Front Left N/S 8V3971036J
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8K0941824D
Audi Volkswagen Fuse Box Connector Socket Module Unit 8K0941824D
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8W0959595E
Audi A4 B9 Rear Door Control Module ECU Left Right N/O/S 8W0959595E
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8Y0919605
Audi A3 S3 RS3 8Y MMI Multimedia Display Screen Sat Nav Radio 8Y0919605
£284.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8Y0971688H
Audi A3 8Y Sportback Rear Door Wiring Loom Harness Cable Right O/S 8Y0971688H
£37.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4M0035456A
Audi A4 B9 Antenna Amplifier Aerial Control Module Unit 4M0035456A
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5Q0907530B
Audi A3 8V Central Gateway Control Unit Module Relay ECU 5Q0907530B
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8X0919475F
Audi Q3 8U PDC Parking Distance Assistant Control Unit Module ECU 8X0919475F
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8J0907274
Audi TT 8J Tyre Pressure Control Module Unit 8J0907274
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5WA937086BE
Audi S3 8Y Module BCM Body Control Unit Module ECU 5WA937086BE
£151.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8R0035223G
Speaker Amplifier Audi A4 B8 A5 8T Stereo Radio Sound System Amp 8R0035223G
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8W2035043E
Audi A4 B9 MMI Multimedia Sat Nav Navigation Control Head Unit 8W2035043E
£379.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 4H0907063CD
Audi A8L 4H Onboard Comfort Control Module CCM Unit ECU 4H0907063CD
£42.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4G5907468C
Audi A6 C7 Gateway Interface Electrical Control Unit Module ECU 4G5907468C
£42.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 059903024A
Audi A4 B9 Alternator Generator Diesel Engine 3.0 TDI 059903024A
£123.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. RHD-3Q2971111AM
Audi RS3 8V Power Steering Rack Wiring Harness Loom Cable 3Q2971111AM
£47.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8T0971365J
Audi A5 8T Seat Cable Front Wiring Loom Harness Left Right N/O/S 8T0971365J
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4G0971765
Audi RS6 C7 Mirror Wing Adjust Switch Loom Harness Wiring Cable 4G0971765
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 06A906033PA
Audi A3 8P 1.6 Petrol MPI 102HP BSE Engine ECU Kit 06A906033PA Ignition + Key
£189.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. RHD-80A919617A
Audi SQ5 FY Front Screen HUD Windscreen Head Up Head-up Projection 80A919617A
£849.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5Q0937084DR
Audi Q2 GA Body Control Comfort Unit Module BCM Unit ECU 5Q0937084DR
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8E5945094A-1
Audi A4 B7 Tail Light Side Panel Lamp Cable Wiring Rear Right O/S 8E5945094A
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4G5971035AS
Audi RS6 C7 Front Door Wiring Harness Cable Loom Right O/S 4G5971035AS
£80.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4H0614235
Audi A8 D4 ABS Pump Bracket Braking Unit Mount Holder Support 4H0614235
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 1K0971250AL
Audi A3 8P Negative Battery Terminal Cable Wiring Battery Wire 1K0971250AL
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. RHD-8Y2971029H
Audi A3 8Y Front Door Wiring Loom Harness Cable Passenger's Side 8Y2971029H
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8K0971845A
AUDI A5 8T 2.0 TDI CGLC Fuse Relay Box Power Distribution 8K0971845A
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. RHD-8T0971366B
Audi A5 8T Front Seat Cable Wiring Loom Harness Left Right N/O/S 8T0971366B
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4L0907355B
Audi Q5 8R Adblue Metering Control Module Unit ECU 4L0907355B
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4H0971030FC
Audi A8 D4 Front Door Passenger Side Wiring Loom Harness Cable 4H0971030EE
£94.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8S0035021E
Audi TT FV Mk3 Navi SD GPS MMI Multimedia Head Unit Module 8S0035021E
£569.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 8T0959795C
Audi A5 8T Rear Door Control Module Unit Left Right N/O/S 8T0959795C
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5Q0915181E
Audi A3 8V Negative Battery Terminal Cable Harness Wiring Loom 5Q0915181E
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4F5035225M
Audi S6 C6 Radio Aerial Antenna Amplifier FM 4F5035225M
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4H0907801M
Audi A6 C7 Parking Brake Module Handbrake Actuator Control Unit 4H0907801M
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8K0907064FE
Audi A4 B8 BCM2 Body Comfort Module Control Unit Board Power Supply 8K0907064FE
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8U0959107
Audi Q3 8U Boot Tailgate Control module Unit 8U0959107
£37.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4G0907410
Audi A6 C7 4G A5 8T Garage Door Opening Module Controller Unit 4G0907410
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8W0035502C
Audi A4 B9 Wireless Charger Centre Console Phone Charging Module 8W0035502C
£94.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. RHD-8Y2971030H
Audi A3 8Y Front Door Wiring Loom Harness Cable Driver's Side 8Y2971030H
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 022906032GH
Audi A3 8P 3.2 FSI BMJ Quattro 250HP Engine ECU Kit 022906032GH Key Lock Manual
£474.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4L0035225AJ
Audi Q7 4L Radio Aerial Antenna Amplifier AM/FM 4L0035225AJ
£18.95
Free delivery - Wed, Dec 17
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 .