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.

Automotive electrical systems

At 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.

More information

Make

Category

Subcategory

Condition

In Stock

Price

Products in promotion

Part no. 2755516

Battery Mounting Bracket Mini Cooper R55 R56 R57 R60 R61 Clamp Bolt Holder

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9231179

Antenna Amplifier BMW F30 F80 M3 F82 M4 Rear Aerial Booster AM/FM DAB 9231179

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 3449504

Mini Cooper One R55 R56 Electrical System Fuse Distribution Box 3449504

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9211494

BMW E88 Cabrio Convertible Folding Top Roof ECU Module CVM6 9211494

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6988303

BMW F20 F30 E60 E65 X5 E70 X6 E71 E84 Air Wiring Sensor Quality AUC 6988303

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9362848

BMW 1 3 Series F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7290719

BMW F40 F54 Cover Battery Vehicle Trim 7290719

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0009004802

Air Module Mercedes W639 W906 ECU Control Unit Crash Impact A0009004802

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1668200689

Antenna Amplifier Mercedes W176 Aerial Module Unit Rear A1668200689

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9299265

BMW 1 2 3 Series F20 F21 F22 F30 Radio Professional CD Bluetooth Player 9299265

€132.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 4F0035056B

Audi A6 C6 Head Unit Radio CD Player Control Unit Module 4F0035056B

€222.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7533103

Mini Cooper S R52 R53 W11 Engine Wiring Loom Harness 7533103

€66.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9261110

BMW F20 F21 F30 F31 Fuse Box Power Distribution Control Unit Box Rear 9261110

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9278279

Mini R55 R56 LCI Instrument Cluster Speedo Navigation Display Screen 9278279

€104.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1569007702

Signal Actuation Module Mercedes W176 W246 SAM Control Unit ECU A1569007702

€32.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9387624

BMW F20 F21 F30 Sensor Rain Light Solar Condensation 9387624

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9216468

BMW F10 F11 F20 F30 F31 Front Seat Heating Control Module ECU 9216468

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2465407832

Battery Cable Mercedes W176 W246 Positive Wiring Starter Harness A2465407832

€170.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9248096

Air Module BMW F01 F02 LCI F06 F10 F11 F13 ECU Control Unit ECU 9248096

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 3456016

Mini R55 R56 R57 R58 R60 Control Unit PDC Parking Sensor Module 3456016

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6974021

BMW X1 E81 E87 E88 E90 E91 Parking Control Module Unit PDC 6974021

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9287535

CAS3 Module BMW E60 E87 E90 E91 E92 Key Reading Control Unit 9287535

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9311850

BMW 1 3 Series F20 F21 F30 F31 Control Unit Air Conditioning A/C Module 9311850

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7180426

Fuel Pump Control Unit BMW E60 E81 E87 E90 E92 Module Sensor ECU 7180426

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1769052400-1

Mercedes W176 Pressure Crash Impact Sensor Control Module A1769052400

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9262753

BMW F30 F31 F80 M3 Dashboard Central Information Display Screen 6,5" 9262753

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9311113

Mini R55 R56 R57 LCI R60 R61 Navigation Head Unit CHAMP 2 Sat Nav DAB 9311113

€113.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9296494

BMW F20 F21 F22 F30 F31 F32 Control Unit Airbag Ecu 9296494

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9352861

FEM Unit BMW F20 F22 F30 F32 Control Unit Module ECU Fuse Box 9352861

€142.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9226357-1

Loudspeaker BMW F20 F30 Top-HiFi Door Speaker Tweeter Set Harman Kardon 9226357

€42.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8V0857273P

Audi A3 8V Multimedia Display Screen Radio Sat Nav Head Unit 8V0857273P

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A6399003000

Door Module Mercedes Vito W639 Front Right O/S Control Unit ECU A6399003000

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7248172

BMW 5 Series F10 F11 Drive Window Lifter Motor Front Rear Right O/S 7248172

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Audi A5 8T Windscreen Rain Sensor Control Unit 8U0955559B

-5%

Part no. 8U0955559B

Audi A5 8T Windscreen Rain Sensor Control Unit 8U0955559B

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7520933

Mini Cooper One W10 R52 Wiring Harness Loom Engine 7520933 7531839 7514274

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A6401501933

Engine Wiring Mercedes W169 W245 OM640 Cable Loom Harness A6401501933

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9196937

BMW E93 Convertible Seat Control Unit Module ECU 9196937 FSV 7.14.0

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9207360

BMW E60 E87 LCI E90 Hands-free Bluetooth High Basis MULF2 9207360

€66.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9284594

BMW 1 2 Series F20 F21 F30 F30 Mini F56 Front Seat Sensor Mat Left N/S 9284594

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Door Module Mercedes C118 W177 W247 Front Left N/S Control Unit A1779001304

-5%

Part no. A1779001304

Door Module Mercedes C118 W177 W247 Front Left N/S Control Unit A1779001304

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1725420023

Mercedes W176 W204 W246 Front Parking Sensor Display Control PDC A1725420023

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9283529

Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9283529

€165.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8K0959655N

Audi A4 B8 A5 8T Air Module Control Unit ECU 8K0959655N

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7533100

Mini Cooper One R50 Petrol W10 Engine Wiring Loom Harness Module 7533100

€47.95

Free delivery - Thu, Dec 18

If paid before 14:00

Ford Fiesta Transit Relay 4-Pin Grey FoMoCo Unit 6G9T-14B192-EA

-5%

Part no. 6G9T-14B192-EA

Ford Fiesta Transit Relay 4-Pin Grey FoMoCo Unit 6G9T-14B192-EA

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 1388911

BMW E36 E38 E21 E85 R52 R57 Change-Over Contact Relay Violet 1388911

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7492026-1

Headlight Control Unit BMW F20 F21 F30 LCI Module FLE2 7492026

€94.95

Free delivery - Thu, Dec 18

If paid before 14:00

Mercedes W205 Fuse Box Rear Relay Electrical Control Unit Box A2059068501

-5%

Part no. A2059068501

Mercedes W205 Fuse Box Rear Relay Electrical Control Unit Box A2059068501

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6906548

Mini Cooper R56 Electrical System Fuse Distribution Box 6906548

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1179001801

Mercedes W176 Air Module System Control Unit Module ECU A1179001801

€85.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1648203085

Mercedes ML W164 Window Windscreen Rain Light Sensor A1648203085

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2045405609

Video Wiring Cable Mercedes W204 Video Unit Harness Cable Wire A2045405609

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7476046

BMW F20 F21 F30 F31 Mini F55 F56 F57 Fuel Pump Module Control Unit ECU 7476046

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9805670-1

Mini R60 Countryman Window Lifter Motor Drive Front Right O/S Door 9804384

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A6459060800

Starter Motor Mercedes W176 W246 C117 Diesel Engine Denso A6459060800

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0009003101

Mercedes W204 W212 W221 Fuel Pump Module Control Unit A0009003101

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9257152

Telematics Bluetooth BMW F10 F20 F22 F30 Combox GPS Control Unit Module 9257152

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8474730

BMW F20 F21 F30 F31 LCI 120d 320d Diesel B47 190HP ECU DDE 8474730 Automatic

€341.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2469054201

Mercedes CLA C117 W176 Aerial Booster Antenna Amplifier A2469054201

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1669007814

Mercedes W166 W176 Navigation Screen Head Unit Sat Nav Display A1669007814

€123.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9811260

BMW Mini Cooper R60 Wiring Passenger Loom Front Door Cables Left N/S 9811260

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9351155

Control Panel BMW X3 F25 X4 F26 Radio Player High Audio Unit Module 9208591

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8585935

BMW F20 F23 F30 F34 F36 LCI Automatic Gearbox Wiring Loom Harness 8585935

€47.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A9069005701

Mercedes W639 W906 Air Module SRS Control Unit ECU A9069005701

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1728100011

Mercedes W176 W204 W212 Navigation Control Unit Module NTG 4.5 A1728100011

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0051513901

Kompressor Mercedes W203 W211 M271 Petrol Engine Starter Motor A0051513901

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6917544

Mini Cooper R50 R53 Rear PDC Ultrasonic Parking Sensor Pepper White - 850

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6989713

BMW 1 3 Z4 Series E88 E89 E93 Convertible Cabrio DWA-Alarm System Module 6989713

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9253637

BMW 3 5 Series F10 F11 F30 F31 Airbag Control Unit Module 9253637 65779253637

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1668210351

Mercedes-Benz A CLA C117 W176 Airbag Impact Crash Sensor A1668210351

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1179009200

Mercedes W176 Air Module Belts System Control Unit ECU Bosch A1179009200

€70.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9240943

Mini Cooper R55 R56 LCI R60 Electrical System Fuse Distribution Box 9240943

€32.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9154358

BMW E81 E87 E90 Hands-Free Electronics Charging Module MULF 9154358

€66.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2129004203

Mercedes W212 Boot Lid Control Unit Trunk Lid Module A2129004203

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9231091

Bluetooth Control BMW E60 E87 E90 Telematics Unit Module 9231091

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2469009312-1

Mercedes W176 Radio Stereo Head Unit Media Player Navigation A2469009312

€104.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9331597

BMW F20 F21 F22 F30 F31 Alpine CD Radio Player Head Control Unit 9331597

€51.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8580390

Engine Starter BMW F40 F46 F48 B47B B47D B48E Diesel Motor Actuator 8580390

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1635400382

Mercedes ML W163 Fuse Relay Box ECU Cover Trim A1635400382

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6864208

BMW F20 F21 F22 F30 F31 Air Module ECU ICM Control Unit 6864208

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7218339

Control Unit BMW E60 E61 E81 E87 E90 Fuel Pump ECU 7218339

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0051511301-2

Starter Motor Mercedes W203 W210 W211 Diesel Engine Actuator A0051511301

€32.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9381299

BMW F20 F21 F30 F31 Business Navigation Sat Nav Head Unit Player 9365833

€47.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 1508937

BMW Mini Cooper S One D R50 R52 R53 Negative Battery Cable Wire 1508937

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9240524-1

BMW E82 Footwell Light Module Control Unit ECU BASIS PL2 FRM3R 9240524

€94.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2049001813-1

Mercedes W204 CD Player Radio Stereo Navigation Sat Nav Head Unit A2049001813

€89.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9196936

BMW 1 3 Series E87 E90 E91 E92 Seat Control Unit Module ECU 6926371

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1668210151

Impact Sensor Mercedes W166 W176 W246 Crash Sensor A1668210151

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2129003408

Mercedes W204 W221 Fuel Pump Module Control Unit A2129003408

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6917548

Mini R50 R53 Rear PDC Ultrasonic Parking Sensor Pure Silver Metallic 900

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Audi Q3 8U Door Module Rear Left Door Control Unit 8X0959795C

-5%

Part no. 8X0959795C

Audi Q3 8U Door Module Rear Left Door Control Unit 8X0959795C

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6863385

BMW F20 F21 F30 F31 ECU ICM Plus Control Unit Module Airbag 6863385

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9322122-1

Display Screen BMW F20 F21 F22 Central Information Sat Nav Monitor 6,5" 9322122

€37.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2129001711

Mercedes W212 PDC Parking Distance Control Unit Module Sensor A2129001711

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0025422619

Mercedes ML W163 Relay 4-Pin Grey Tyco A0025422619

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1729050151

Mercedes-Benz A B Class W176 W246 Roof Towing Alarm Sensor Switch Module

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9317872

BMW F20 F21 F22 F30 F31 Alpine CD Champ 2 Radio Player Head Unit 9323784

€42.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9145115

BMW X5 Series E70 Power Distribution Fuse Box Front 9145115 6931690

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8355056

BMW 5 X5 Series E53 Fuel Tank Flap Actuator 8355056

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

...

Showing 100-198 of 11957 products

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 .

used parts volkswagen car parts mercedes used car parts cheap car parts audi auto parts spare parts genuine used audi parts bmw starters, alternators, ecus & wiring mercedes starters, alternators, ecus & wiring mini starters, alternators, ecus & wiring audi starters, alternators, ecus & wiring volkswagen starters, alternators, ecus & wiring