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.
Make
Category
Subcategory
Condition
In Stock
Price
Part no. 8E0907279K
Audi A4 B7 Body Control Module BCM Comfort Control Unit Power Supply 8E0907279K
£13.95
Free delivery - Mon, Dec 15
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 - Mon, Dec 15
If paid before 14:00
Part no. 8E0910115K
Audi A4 B7 2.0 TFSI BWE 200HP Engine Control ECU 8E0910115K Manual
£56.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6910085
BMW X3 E83 Heater Wiring Cable Harness Loom Matrix Air Conditioner 6910085
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2769007500
Mercedes W205 C43 4MATIC M276.823 367HP Engine Control ECU A2769007500 Automatic
£284.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 9271935
Mini Cabrio R57 LCI Wiring Main Loom Harness Rear Right O/S 9271935
£142.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. RHD-9251191-2
BMW F10 F12 F25 F26 Lever Gear Selector Switch Automatic Transmission 9251191
£80.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2129009922
Mercedes S212 Fuse Box Relay Control Unit SAM Module A2129009922
£56.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2055404207-1
Mercedes W205 Front Bumper PDC Parking Sensor Wiring Harness Cable A2055404207
£89.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4H0959792S
Porsche Macan 95B Front Door Control Module Unit Passenger Side 4H0959792S
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A4539004009
Smart Fortwo C453 Display Screen Multimedia Navigation Sat Head Unit A4539004009
£142.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8S0959121
Audi TT FV 8S Crash Impact Sensor Pedestrian Protection Module Front 8S0959121
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1K4971694BM
Volkswagen Golf Mk5 Door Card Wiring Loom Cable Rear Right O/S 1K4971694BM
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6R0959655M
VW Volkswagen Polo 6R Seat Ibiza 6J Air Module Control Unit ECU 6R0959655M
£32.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6C0959655L
Seat Ibiza 6J VW Polo 6C 6R Air Module Unit Control Unit ECU Bosch 6C0959655L
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5QA919294B
Audi A3 8V VW Volkswagen Golf VII PDC Park Assist Control Module Unit 5QA919294B
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1K4971693BM
Volkswagen Golf Mk5 Door Card Wiring Loom Cable Rear Left N/S 1K4971693BM
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5G2971147HN
Volkswagen Golf Mk7 VII Tailgate Boot Trunk Cable Wiring Left N/S 5G2971147HN
£70.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2129060605-1
Mercedes W212 Fuse Box Rear Relay Control Unit Electric Module SAM A2129060605
£70.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4H0955557A
Porsche Macan 95B Front Crash Impact Sensor Air Module Control Unit 4H0955557A
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A0009050410
Mercedes W176 W205 C207 W212 Front Radar Distance Sensor Unit Module A0009050410
£123.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 1305715356
Audi TT FV Mk3 8S Front LED Headlight Control Unit Module 1305715356L
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1308310484
Audi TT Contact Plate Control Unit Module Electric Part 1308310484
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1305715353
Audi TT LED Headlight Headlamp Control Unit Module ECU Front Left N/S 1305715353
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1305715345
Audi A4 B9 LED Headlight Headlamp Control Unit Module Front Left N/S 1305715345
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 99661010900
Porsche Boxster 986 Relay Fuse Box Carrier Support Bracket Plate 99661010900
£32.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 99661826200
Porsche Boxster 986 Comfort Onboard ECU Control Unit Module BSI 99661826200
£322.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 95B971104T
Porsche Macan 95B PDC Parking Sensor Wiring Rear Bumper Loom 95B971104T
£142.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 99661021101
Porsche Boxster 986 Fuse Box Relay Fuse Module Control Unit 99661021101
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 95B955941D
Porsche Macan 95B PDC Parking Sensor Wiring Loom Front Bumper 95B955941D
£142.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8S0035466
Audi TT FV 8S Premium Loudspeaker System Amplifier Bang & Olufsen 8S0035466
£1,139.95
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
Part no. 99661860500-2
Porsche Boxster 986 2.7 9622 220HP Engine Control ECU Kit 99661860500 Automatic
£455.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 03L906018JG-1
Audi A5 8T 2.0 TDI CGLC 177HP Diesel Engine Control ECU Kit 03L906018JG Manual
£142.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 99664512100
Porsche Boxster 986 Radio Audio Head Unit Multimedia 99664512100
£256.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1K4971121G
Volkswagen VW Golf Mk5 Door Harness Loom Cable Wiring Front Passenger 1K4971121G
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1K4971120G
VW Golf Mk5 Door Harness Loom Cable Wiring Front Driver's Door 1K4971120G
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 04L907309G-1
Volkswagen New Beetle 2.0 TDI CUUA 110HP Engine Unit ECU Kit 04L907309G Manual
£189.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8W0937124A
Audi A4 B9 A5 F5 Q5 FY Fuse Box Control Module Relay Box 8W0937124A
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 06K907425B-15
Audi S3 8V 2.0 TFSI DJHA 310HP Quattro Engine Unit ECU Kit 06K907425B Automatic
£265.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 1K0937087J
Skoda Octavia II Body Control Module Convenience Unit BCM ECU 1K0937087J
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9294912
BMW F10 F11 X5 F15 X6 F16 Rear Seat Compartment Screen Display SET 9294912
£522.95
Free delivery - Tue, Dec 16
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 16
If paid before 14:00
Part no. 8486547-2
Mini Cooper F55 F56 Dual-Clutch Transmission Gearbox Control Unit Module DCT
£322.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6777641-2
BMW X5 E70 E81 E87 E90 E91 E92 E93 Air Module Wiring Steering Wheel Loom 6777641
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2479003506
Mercedes W177 Front Seat Module Control Unit Memory Driver's Side A2479003506
£170.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A4539018900
Smart ForTwo C453 Air Module Impact SRS Control Module ECU A4539018900
£94.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 9376789
BMW F39 F45 F48 Mini F60 Positive Battery Wiring Cable 9376789
£32.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5A1B272-1
Mini Cooper F60 SE ALL4 B38X 220HP Engine Control ECU DME 5A1B272 Automatic
£351.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8K0971030AP
Audi A4 B8 Passenger Front Door Wiring Harness Loom Cabling 8K0971030AP
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8K0971035AR
Audi A4 B8 Front Driver's Door Wiring Harness Loom Electrical Cable 8K0971035AR
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8K0971688AG
Audi A4 B8 Door Wiring Harness Loom Rear Right O/S Cabling 8K0971688AG
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 3D0971225AB
VW Volkswagen Phaeton 3D Positive Battery Terminal Cable Lead Wiring 3D0971225AB
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8K0971687AG
Audi A4 B8 Door Harness Loom Cable Wire Rear Left N/S 8K0971687AG
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. RHD-7P6971104D
Volkswagen VW Touareg 7P Parking Sensor Wiring Rear Bumper Loom Cable 7P6971104D
£32.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. RHD-3D2937495
Volkswagen Phaeton 3D Dashboard Fuse Box Module Box Housing 3D2937495
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8K0971029AP
Audi A4 B8 Door Wiring Harness Loom Cable Front Driver's Side 8K0971029AP
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 3D0804869G
Volkswagen Phaeton 3D Battery Mounting Bracket Part Holder 3D0804869B
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9321016-1
BMW F10 F11 LCI On-Board Screen Central Information Display 10,25" 9321016
£142.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 3D0035209B
Volkswagen Phaeton 3D Fuse Box Retainer Bracket Holder Carrier Mount 3D0035209B
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 3D0971095BK
Volkswagen Phaeton 3D GP0 Front Bumper Wiring Loom 3D0971095BK
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 3D0915181C
Volkswagen Phaeton 3D 5.0 V10 Battery Control Module Unit ECU 3D0915181C
£94.95
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
Part no. 8W0907777L
Audi RS5 F5 Chassis Module Control Unit 8W0907777L
£265.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 06M907309H-1
Audi RS5 F5 2.9 TFSI DECA Quattro 450HP Engine Unit ECU Kit 06M907309H Automatic
£664.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7629420
BMW F10 F11 F12 540i 640i N55 315HP Engine Control ECU DME Kit 7629420 Automatic
£379.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 1K0035507L
VW Volkswagen Scirocco Mk3 Roof Top Antenne Control Unit Module 1K0035507L
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9243781
BMW F12 F12 LCI Hi-Fi Audio System Amplifier Harman Becker 9243781
£142.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8W0907217D
Audi A4 B9 Front Windscreen Windshield Lane Assist Camera 8W0907217B
£180.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6854028
BMW F06 F10 F11 F12 F13 ICM Control Unit Module Air Module ECU 6854028
£104.95
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
Part no. A6461505572-1
Mercedes W211 E220CDI OM646.821 170HP Engine ECU Kit A6461505572 Automatic
£189.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1Z0907115A
Skoda Octavia RS VRS 1Z II 2.0 TFSI BWA 200HP Engine Unit ECU 1Z0907115A Manual
£94.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8584276-3
BMW F30 F31 320d ed Diesel N47N 163HP Engine Control ECU DDE 8584276 Automatic
£94.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 7594483-5
BMW Z4 E89 2.3i N52N 258HP N52 Engine Control Unit ECU Kit DME 7594483 Manual
£208.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 03L906022RD
Skoda Octavia II VRS 2.0 TDI CEGA Engine Control Module ECU 03L906022RD Manual
£218.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 05C907309F-1
Seat Ibiza 6J FR 1.0 TSI DUSA 115HP Engine Control ECU Kit 05C907309F Automatic
£142.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 04L907309R-3
Audi A3 8V VW Golf VII 2.0 TDI 150HP CRLB Engine Unit ECU Kit 04L907309R Manual
£113.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4H0959795P
VW Touareg 7P Rear Door Module Control Unit Left Right N/O/S 4H0959795P
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 95B971688P
Porsche Macan 95B Rear Door Wiring Harness Loom Cable Right O/S 95B971688P
£142.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9252388
BMW X5 F15 X6 F16 Front Door Wiring Loom Harness Cable Passenger Side 9252388
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6809472
Mini Cooper F56 Front Door Wiring Loom Harness Driver Side 9389221
£51.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6832270
BMW F10 F12 F13 F20 F22 F30 F31 Navigation Radio Sat Nav Head Unit High 6832270
£94.95
Free delivery - Tue, Dec 16
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 - Mon, Dec 15
If paid before 14:00
Part no. 06M907309K-1
Porsche Macan S 95B 2.9 V6 DGRB 381hp Engine Unit ECU Kit 06M907309K Automatic
£474.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5E0907159
Skoda Octavia 5E Audi A8 D4 Impact Sound Control Module Unit ECU 5E0907159
£61.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9368387
BMW F07 F10 F11 X6 F16 Rear Cabin Entertainment Audio CD DVD Player 9368387
£189.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 5Q0035874B
Skoda Octavia 5E MMI Multimedia SAT NAV Radio Stereo Head Unit 5Q0035874B
£237.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4G0035061A
Volkswagen Touareg 7P Multimedia Navigation Radio Control Head Unit 4G0035061A
£222.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 0C8927750D
VW Touareg 7P Automatic Transmission Module Control Unit ECU 3.0 TDI 0C8927750D
£275.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 1S0919275D-FSI
Audi Q3 8U PDC Parking Distance Control Sensor 1S0919275D Foil Silver - Z7G
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1K0907115
Volkswagen Golf V GTI 2.0 TFSI AXX 200HP Engine Control ECU Kit 1K0907115 Manual
£142.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 95B907159T
Porsche Macan 95B Engine Sound Generator Actuator Module Control Unit 95B907159T
£142.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 95B971226Q
Porsche Macan 95B Battery Terminal Cable Harness Wiring Loom 95B971226Q
£94.95
Free delivery - Mon, Dec 15
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 - Mon, Dec 15
If paid before 14:00
Part no. 95B980654D
Porsche Macan 95B Front Windscreen Lane Assist Kafas Camera 95B980654D
£170.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7PP907064LA
Porsche Macan 95B Body Comfort Module Control Unit 7PP907064LA
£213.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7PP035620GC
Porsche Macan 95B Navigation Tracking Control Module 7PP035620GC
£113.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2215408508
Mercedes W221 Door Harness Wiring Loom Rear Left N/S A2215408508
£28.95
Free delivery - Mon, Dec 15
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 .