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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Part no. 03L906018KP
Audi TT 8J CFGB 2.0 TDI Quattro 170HP Engine ECU Kit 03L906018KP Automatic
£123.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 03L906018JM-1
Audi Q5 8R 2.0 TDI CGLC Quattro 177HP Engine Control ECU Kit 03L906018JM Manual
£189.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 04E907309A-1
Audi A3 8V 1.4 TFSI CMBA 122HP Engine Control Unit ECU Kit 04E907309A Manual
£142.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 04L906021BQ-1
Audi A4 B8 A5 8T 2.0 TDI CNHC 163HP Engine Control ECU Kit 04L906021BQ Manual
£123.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4F1941824B
Audi Q7 4L Fuse Box Control Module Connector Plug 4F1941824B
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5QA919283A
Audi A3 S3 8V VW Golf 7 Seat Leon 3 Parking Assist PDC Control Module 5QA919283A
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0907064C
Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907064C
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-8W2919616
Audi A4 B9 Multimedia Volume Control Button Switch Knob Head Unit 8W2919616
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0907064EB
Audi A4 B9 2.0 TFSI DEMA BCM Body Control Module Unit ECU 8W0907064EB
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K5907115
Audi A4 B8 A5 8T 2.0 TFSI CDNC Quattro 211HP Engine Control Unit ECU 8K5907115
£265.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4F1941824
Audi Q7 4L Fuse Box Control Module Connector Plug Socket Wiring Loom 4F1941824
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0907376H
Audi A3 S3 8V AMR Module Rear Suspension Damper Control Unit 8V0907376H
£113.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 8P0907063G
Audi A3 8P Body Control Module Unit 8P0907063G
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 079911021D
Audi Q7 4L Engine Starter Motor Actuator Starter 079911021D
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0907064CH
Audi A5 F5 BCM Body Comfort Onboard Control Module Unit ECU 8W0907064CA
£32.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4E0919884BD
Audi Q7 4L A8 D3 Navigation Disc DVD Europe Version 2008 4E0919884BD
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4F0955557A
Audi A6 C6 Door Crash Impact Sensor Front Left Right N/O/S 4F0955557A
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 03L911021E
Audi A4 B8 Starter Motor Engine Motor Actuator Diesel Bosch 03L911021E
£66.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4L0907290
Audi Q7 4L Gateway Convenience Module Unit Control ECU 4L0907290
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8E0907637A
Audi A6 C5 Yaw Sensor ESP Rotation Rate Control Unit Module 8E0907637A
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P0906131A
Audi A3 8P Engine Unit Bracket ECU Module Holder Bracket Mount 8P0906131A
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 04L907445B
Audi A3 8V 1.6 TDI 110 HP Engine Control Module ECU Kit 04L907445B Manual
£170.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0951253-1
Audi VW Volkswagen Seat Relay 643 Unit Module 4 Pins Set X2 8K0951253
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0951253
Audi A3 8P Multi Use Control Module Relay 4 Pin Light Green Unit 4H0951253
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 7L0864643B
Battery Cover Audi Q7 4L VW Touareg 7P Porsche Cayenne 9PA Top Cap 7L0864643B
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 7PP941572AB
Audi A4 B9 Volkswagen Tiguan 1T Headlight Ballast Control Module 7PP941572AB
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 09D927750JJ
Audi Q7 4L 4.2 TDI Automatic Transmission Module Controller Unit 09D927750JJ
£56.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0616829
Audi RS6 C7 4.0 TFSI CRDB Air Line Pipe Hose Tube Connector 4G0616829
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G8959795J
Audi A7 4G8 Rear Door Module Control Module Unit Left Right N/O/S 4G8959795J
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 03L911024A
Audi A4 B8 A5 8T 2.0 TDI Diesel Engine Starter Motor Assembly Unit 03L911024A
£47.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8E0035456D
Audi A4 B8 Telephone Aerial Antenna Signal Amplifier Module 8E0035456D
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8R0907468H
Audi S4 A4 B8 Gateway Control Module ECU 8R0907468H
£13.95
Free delivery - Mon, Dec 01
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 01
If paid before 14:00
Part no. RHD-8Y2919617-1
Audi S3 8Y Head Up Display Dashboard Car System Screen 8Y2919617
£284.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0959792G
Audi A8L 4H Front Door Control Module Left N/S Unit ECU 4H0959792G
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0035465A-1
Audi A3 8V Bang & Olufsen Audio Sound Amplifier Stereo System Module 8V0035465A
£123.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K5035570
Audi A4 B8 Aerial Antenna Disturbance Suppressor 8K5035570
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8Y0959760
Audi S3 8Y Front Seat Control Module Unit Left N/S 8Y0959760
£142.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4M0906093N
Audi A4 S4 B9 Petrol Fuel Pump Control Unit Module ECU 4M0906093N
£32.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0857273L
Audi A3 8V Head Up Multimedia Display Screen Radio Sat Nav Head Unit 8V0857273L
£47.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-5Q2419502P
Audi A3 8V Power Steering Column Control Unit Module 5Q2419502P
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0911075B
Audi A8L 4H Power Positive Distribution Junction Jumper Box Housing 4H0911075B
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0962131
Antenna Control Module Audi Q3 RSQ3 F3 Line Keyless Entry 5Q0962131
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0907182G
Audi A8 D4 4H Multicontour Seat Module Control Unit Left Right N/O/S 4H0907182G
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8R0971035AP
Audi Q5 8R Wiring Loom Front Door Right O/S 8R0971035AP
£37.95
Free delivery - Mon, Dec 01
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 01
If paid before 14:00
Part no. 4H0907658B
Audi A3 8V A5 A6 A7 Air Quality Sensor Unit 4H0907658B
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4E0035541S
Audi Q7 4L Radio Multimedia Receiver Control Module Unit 4E0035541S
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 3Q0959435B
Audi TT FV Entry Keyless Kessy Control Module Unit ECU 3Q0959435B
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8R0971029AP
Audi Q5 8R Wiring Loom Front Door Left N/S Passenger Side 8R0971029AP
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P0862335Q
Audi A4 B7 Harman Becker Bluetooth Module Interface Control Unit 8P0862335Q
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8T8035570-1
Audi A4 B8 Radio Antenna Noise Signal Disturbance Suppressor 8T8035570
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0971100C
Sunroof Wiring Cable Audi A3 8V Roof Motor Electrical Harness Loom 8V0971100B
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0907530AJ
Audi RS3 8V Gateway Control Module GCM Unit ECU 5Q0907530AJ
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8T0959754D
Audi A4 B8 A5 8T A6 C7 Remote Radio Alarm Key Button Control 868 MHZ 8T0959754D
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0937615C-1
Audi TT FV Fuse Relay Box Module Electrical Control Unit 5Q0937615C
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8T0959795Q
Audi A5 B8 8T Door Module Control Unit Left Right N/O/S 8T0959795Q
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0919294K
Audi RS3 8V PDC Parking Distance Control Sensor Module Unit ECU 5Q0919294K
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0959655P
Audi A4 B9 Air Module System Control Sensor ECU Unit 8W0959655P
£132.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 02E911024M
Audi A3 8V 2.0 TFSI DJHA Starter Motor 12V 02E911024M
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8J0907115N
Audi TT 8J 2.0 TFSI BWA 200HP Engine Control Module ECU 8J0907115N Manual
£75.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8S0907159E
Audi TT FV Impact Body Sound Accoustic Control Unit Module ECU 8S0907159E
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-4G2907613A
Audi RS6 C7 4.0 TFSI CRDB Engine Fuse Box ECU Cover Casing Housing 4G2907613A
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0937517
Audi A8L 4H Fuse Relay Battery Junction Box Housing 4H0937517
£56.95
Free delivery - Mon, Dec 01
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 01
If paid before 14:00
Part no. RHD-8K2971228AH
Audi A4 B8 2.0 TFSI CDNC Starter Alternator Harness Wiring Cable 8K2971228AH
£85.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 03L906018KD-1
Audi A4 B8 All Road 2.0 TDI CGLC 177HP Quattro Engine ECU Kit 03L906018KD Manual
£189.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 8V0907451
Audi A3 8V Sun Light Solar Sensor Control Detector 8V0907451
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8X0971029S
Audi A1 8X Door Loom Wiring Harness Cable Front Right O/S 8X0971029Q
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0907063AH
Audi A4 B8 Body Control Comfort Unit Module BCM ECU 8K0907063AH
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8J0907115
Audi TT 8J 2.0 TFSI BWA 200HP Engine Module Control Unit ECU 8J0907115 Manual
£142.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0959655P
Audi TT FV Air Module ECU Control Unit Crash Sensor 5Q0959655P
£56.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0919604H-1
Audi A8L 4H Navigation Dashboard Display Hud Screen 4H0919604H
£142.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 022906032KT
Audi TT 8J 3.2 FSI BUB Quattro 250HP Engine Control Unit ECU 022906032KT Manual
£427.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0971228AC
Audi Q2 GA Volkswagen T Roc Battery Terminal Positive Cable 5Q0971228AC
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-8W2971111D
Audi A4 B9 A5 F5 Power Steering Rack Wiring Harness Loom Cable 8W2971111D
£32.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4F0959655B
Audi A6 C6 Air Module Control Unit ECU Module 4F0959655B
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0971104J
Audi A8L 4H Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 4H0971104J
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 420919275-PHB1
Audi A5 8T Parking Distance PDC Rear Ultra Sonic Sensor Phantom Black - Z9Y
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0907428B
Audi A4 B9 Camera Control Module Unit ECU 8W0907428B
£180.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8D0951253-1
Audi A4 B6 B7 B8 Q7 4L A6 C7 A8 D4 Multi Use Relay Unit Module 4 Pins 8D0951253
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4F1971030AK
Audi A6 S6 C6 Front Passenger Door Wiring Left N/S Harness Cable 4F1971030AK
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-4H2971111E
Audi A4 D8 3.0 TDI Power Steering Wiring Harness Loom Cable 4H2971111E
£47.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0035061S
Audi A5 8T MMI Multimedia Navigation Radio Control Head Unit 4G0035061S
£284.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0907159B
Audi S7 4G8 Alarm Signal Body Sound Impact Control Module Unit 4G0907159B
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8R0907401J-1
Audi Q5 8R 3.0 TDI CCWA 240HP Quattro Engine ECU Kit Ignition + Key 8R0907401J
£237.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 8E1910115A-1
Audi A4 B7 2.0 TFSI BWE 200HP Engine Control Unit ECU 8E1910115A Manual
£94.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0907530AF
Volkswagen Seat Skoda Audi Gateway Control Unit Module ECU 5Q0907530AF
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W1907064BC
Audi A4 B9 Body Control Module BCM Comfort Control Unit Power Supply 8W1907064BC
£85.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P0035503M
Audi A3 8P Bluetooth Antenna Module Control Unit 8P0035503M
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P4971036J
Audi A3 8P Front Left N/S Door Harness Cable Loom 8P4971036J
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 6C0907359
Audi A4 B8 Air Suspension Module Regulation Control Unit 6C0907359
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4N0906093E
Audi Q3 F3 A8 4N 2.5 TFSI Petrol Control Fuel Pump Tank Pump Unit 4N0906093E
£47.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0907064DB
Audi S4 B9 Body Control Module BCM Comfort Control Unit 8W0907064DB
£28.95
Free delivery - Mon, Dec 01
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 01
If paid before 14:00
Part no. 8U0971104C
Audi Q3 8U Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 8U0971104C
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 1K0971228N
Audi A3 VW Golf Caddy Battery Lead Positive Cable Plus Pole Wiring 1K0971228N
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0919604G
Audi A8L 4H Head Up Display Hud Project Screen Control Unit Module 4H0919604G
£161.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0920790A
Audi A3 S3 RS3 Instrument Cluster Speedo Clocks Diesel Manual 8V0920790A
£474.95
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 .