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. 8650701-1
BMW F80 M3 F82 F83 M4 S55 431HP Engine Module ECU DME Kit 8650701 Automatic
£949.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A1775407455
Mercedes C118 W177 W247 Earth Ground Cable Wiring Harness M260 A1775407455
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2475452301
Mercedes C118 W177 W247 Engine Compartment Fuse Box Bracket M260 A2475452301
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A1775408557
Mercedes W177 A35 AMG Engine Wiring Harness Cable Loom M260 Petrol A1775408557
£94.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4M0959793H
Audi A5 F5 A4 B9 Front Door Control Module Unit ECU Driver's Side 4M0959793H
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4M0906093L
Audi Q7 4M 3.0 TDI Fuel Pump Control Unit Module ECU 4M0906093L
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2609000900-1
Mercedes W177 A35 AMG M260 306HP Engine Control ECU Kit A2609000900 Automatic
£474.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9380278
BMW F45 Active Tourer Parking Sensor PDC Wiring Harness Rear Bumper 9380278
£142.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8736970
BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 8736970
£142.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8512498-10
BMW X1 E84 E90 E91 LCI N47 177HP Engine Control ECU Kit DDE 8512498 Automatic
£189.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2149009808
Mercedes W177 Windscreen Windshield Rain Sensor Control Unit Front A2149009808
£51.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 03L906018AG
Audi A3 8P 2.0 TDI 140HP CFFB Engine Control ECU Kit 03L906018AG Automatic
£142.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8W0959593G
Audi A4 B9 A5 F5 Front Door Module Control Unit ECU Driver Side 8W0959593G
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A1779007318
Mercedes CL C118 W177 Air Module SRS Control Unit ECU A1779007318
£94.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2478207302
Mercedes W177 Single USB C Charging Port Socket Connection Unit A2478207302
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8W6947356
Audi A5 S5 F5 Door Card Panel LED Module Light Unit Wiring Harness 8W6947356
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8W0947355G
Audi A5 S5 F5 Door Panel LED Module Light Unit Wiring Front Right O/S 8W0947355G
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A1779001218
Mercedes W177 Radio Stereo Sat Nav Navigation CD Head Unit A1779001218
£427.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8W0947356E
Audi A5 S5 F5 Interior Door Panel Courtesy Light LED Wiring Harness 8W0947356E
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2129006417-1
Mercedes W207 W212 Radio Head Unit CD Player Control Panel Switch A2129006417
£75.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A1679009330
Mercedes C118 W167 W177 W243 W247 Ignition Control Module Unit ECU A1679009330
£237.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A0009004836
Mercedes W177 W247 Driving Dynamics Module Control Unit ECU A0009004836
£113.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. RHD-A1779008116
Mercedes C118 W177 W247 Dashboard Multimedia Display Speedo Screen A1779008116
£151.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5FJ919606B
Seat Ibiza Mk5 Dashboard Onboard Screen Monitor Touchscreen Display 5FJ919606B
£89.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2469008819-1
Mercedes W176 W246 Radio Head Unit Audio Media Player Navigation A2469008819
£227.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5WA907572B
Audi A3 8Y Adaptive Cruise Control Radar Sensor Control Unit Module 5WA907572B
£75.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4M0907401AM
Audi Q7 4M 3.0TDI DPXB Quattro 218HP Engine Control ECU 4M0907401AM Automatic
£655.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4M0907590D
Audi S5 F5 Blind Spot Radar Distance Control Module Left N/S Slave 4M0907590D
£132.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2789001300-2
Mercedes W166 ML63 4-Matic M157 585HP Engine Unit ECU Kit A2789001300 Automatic
£854.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4M0907566D
Audi S5 F5 Blind Spot Radar Distance Control Module Right O/S Master 4M0907590D
£132.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4M8863351
Audi Q7 4M Twin Charging Dual Socket 12V Trim Centre Console Rear 4M8863351
£32.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 3WA959592A
Audi A3 8Y Door Control Unit ECU Module Front Left N/S Side 3WA959595A
£56.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. RHD-8Y2971029AG
Audi A3 8Y Front Door Wiring Loom Harness Cable Driver's Side 8Y2971029AG
£70.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 7188557
BMW F10 S63N Control Unit Fuel Pump 7188557
£303.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 5Q0959354A
VW Volkswagen Tiguan AX1 Front Air Module Crash Impact Sensor Unit 5Q0959354A
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8W7907468F
Audi S5 F5 Gateway Control Module Diagnostic Interface Unit 8W7907468F
£322.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6812248
BMW X1 F48 Door Wiring Loom Harness Cable Front Driver Side 6812248
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4L2035670L
Audi Q7 4L Harman Becker Head Unit Radio Player Sat Navigation Module 4L2035670L
£469.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6812252
BMW X1 F48 Door Wiring Loom Harness Cable Rear Left Right N/O/S 6812252
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 059907309F
Audi A4 B9 A5 5F 3.0 TDI CSWB 218 HP Engine Control Module 059907309F Automatic
£189.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6812250
BMW X1 F48 Door Wiring Loom Harness Cable Front Passenger Side N/O/S 6812250
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 059903024A
Audi A4 B9 Alternator Generator Diesel Engine 3.0 TDI 059903024A
£123.95
Free delivery - Mon, Dec 15
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 15
If paid before 14:00
Part no. 4M1907468C
Audi A4 B9 A5 F5 Q7 4M Gateway Control Module Unit ECU 4M1907468C
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4M0906121B
Audi A4 B9 Q7 4M A5 F5 Diesel Fuel Pump Control Module Unit ECU 4M0906121B
£32.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8W0971035
Audi A4 B9 Door Card Wiring Loom Harness Cable Front Right O/S 8W0971035
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8W0907064BB
Audi A4 B9 BCM Body Comfort Module Onboard Control Unit ECU 8W0907064BB
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8W0971659B
Audi A4 B9 Dashboard Air Vent Wiring Loom Harnes Cable Passenger Side 8W0971659B
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8W0907063BG
Audi A4 B9 Body Control Comfort Unit Module BCM Unit ECU 8W0907063BG
£51.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8W0035035C
Audi A4 B9 Multimedia Stereo Sat Nav SD CD Player Radio Head Unit 8W0035035C
£303.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. RHD-5G4971161AR
VW Volkswagen Golf Mk7 Door Wiring Front Left N/S Loom Cable Harness 5G4971161AR
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 06J906026AR
Volkswagen Scirocco Mk3 2.0 TFSI CAWB 200HP Control ECU Kit 06J906026AR Manual
£237.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7P6907357B
Volkswagen Golf Mk7 Headlight Head Lamp Range Control Unit Module ECU 7P6907357D
£66.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5Q0971228AB
Audi A3 8V Q2 GA VW Passat Golf Battery Terminal Positive Cable 5Q0971228AB
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A1664402005
Mercedes W166 W292 Rear Axle Suspension Wiring Loom Harness A1664402005
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5G0971104AD
VW Volkswagen Golf Mk7 Wiring Loom PDC Rear Harness Parking Sensor 5G0971104AD
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. RHD-5Q2971111CG
Volkswagen Golf VII 5G Power Steering Rack Wiring Harness Loom Cable 5Q2971111CG
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9186211-1
BMW X5 E70 M Audio Professional Head Unit Radio CD Player Navigation 9186211
£66.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A6429001300
Mercedes W212 E350 CDI OM642.850 231HP Engine Control ECU A6429001300 Automatic
£137.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 2Q0941828E
Audi A1 8X Seat Ibiza Mk5 Fuse Box Control Module Relay Box 2Q0941828E
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8E0837220Q
Audi A4 S4 B7 Remote Key Radio Alarm Key Fob Opener Button 8E0837220Q
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A1669009411
Mercedes ML W166 GL X166 Body Comfort Control Unit SAM Module ECU A2139003208
£94.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A1669004811
Mercedes ML W166 GL X166 Air Suspension Control Unit Module ECU A1669004811
£66.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8E5035225S
Audi A4 B7 Window Antenna Amplifier Module Unit 8E5035225S
£75.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8S0035021M
Audi TT FV Navi SD GPS MMI Multimedia Head Unit Module 8S0035021B
£441.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A1669001211
Mercedes ML W166 GL X166 Air Module Control Unit ECU Module Sensor A1669001211
£113.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A1668311246
Mercedes ML W166 Music CD Player Ventilator Blower Fan A1668311246
£32.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6F0971251E
Seat Ibiza Mk5 Rear Bumper PDC Parking Sensor Wiring Harness Cable 6F0971251E
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5Q0907361G
Seat Leon Mk3 5F Fuse Box Control Unit Module Relay Box 5Q0907361G
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6F0035225
Seat Ibiza Mk5 KJ1 Antenna Amplifier Aerial Module Control Unit 6F0035225
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1K2971615A
Audi A3 8P Engine Bay Wiring Holder Harness Loom Cable Guide Bracket 1K2971615A
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 7576721-2
BMW E90 E91 E93 325i N53 218HP Engine Control Unit Module DME Kit 7576721 Manual
£379.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8574093-14
BMW F20 F21 F30 120d 320d N47N 184HP Engine Control ECU DDE Kit 8574093 Manual
£56.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8676533-2
BMW F30 F31 F33 F34 B48 184HP Engine Control Unit ECU DME Kit 8676533 Automatic
£503.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9894913-3
BMW F20 F21 F30 F31 LCI F22 B58 340HP Engine Control ECU DME 9894913 Automatic
£284.95
Free delivery - Mon, Dec 15
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 15
If paid before 14:00
Part no. 6C11-12A650-AL-1
Ford Transit MK7 2.2 TDCI 86 HP Diesel Engine Control ECU 6C11-12A650-AL Manual
£51.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9204536-4
BMW E89 Footwell Light Module ECU Control LED XE PL2 FRM II Lear 9204536
£113.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 03L906018SK
Audi A4 B8 A5 8T 2.0 TDI CJCD 150HP Engine Control ECU 03L906018SK Automatic
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8587952-9
BMW F20 F21 F30 F31 LCI 120d 320d B47 150HP Engine Unit ECU DDE 8587952 Manual
£85.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A6429001100
Mercedes C207 E350 CDI OM642.836 231HP Engine Control ECU A6429001100 Automatic
£94.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8510591-8
BMW X1 E84 20dX N47 177HP Engine Control Module Unit ECU DDE 8510591 Manual
£66.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 7533651-10
BMW E60 Z4 E85 530i M54 192HP Engine Control Unit ECU DME Kit 7533651 Automatic
£94.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4L0919614C
Audi Q7 4L Navigation MMI Multimedia Control Panel Controller 4L0919614C
£474.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A6421508900-11
Mercedes W221 E350 CDI BE OM642 265HP Engine Control ECU A6421508900 Automatic
£189.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2129001506
Mercedes S212 Fuse Box Rear Relay Control Unit Electric Module SAM A2129001506
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1022184
Ford Transit Connect Mk1 Ignition Switch Lock Key Reader 94AG-A3697-AB
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A1779061302-1
Mercedes EQA H243 X118 W247 Fuse Box Relay Control Unit Module A1779061302
£66.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2135407525
Mercedes W213 Rear Door Wiring Harness Ambiente Left Right N/O/S A2135407525
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2135404825
Mercedes W213 Front Door Wiring Harness Ambiente Driver's Side A2135404825
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9249462
BMW F07 GT X3 F25 Camera Module Reversing Camera Rear View Control Unit 9249462
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2135406831
Mercedes W213 Rear Door Wiring Harness Keyless Left Right N/O/S A2135406831
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9313616
BMW F30 F31 Driver's Side Door Wiring Electrical Loom Harness Cable 9313616
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A0131547002
Mercedes W211 CLS C219 Alternator Generator OM642 Diesel 14V 180A A0131547002
£85.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2711500391-11
Mercedes W204 C207 W212 C250 M271.860 204HP Engine ECU Kit A2711500391 Automatic
£275.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 7566706-2
BMW E60 E63 E65 550i 650i 750i N62N 367HP Engine ECU DME Kit 7566706 Automatic
£284.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 04E907309A-2
Volkswagen Golf VII 1.4 TSI CXSA Engine Control Unit ECU Kit 04E907309A Manual
£142.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2135402405
Mercedes W213 Brake Wear Indicator Wiring Harness Front Right O/S A2135402405
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2139004911
Mercedes W213 PDC Module Parking Assistant Parktronic Unit A2139004911
£123.95
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 .