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. A0005400764

Mercedes W205 Battery Negative Ground Bonding Line Wire Earth Cable A0005400764

PLN 132.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2048709289

Mercedes W204 Right O/S Antenna Amplifier Filter Module A2048709289

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2048706826

Mercedes W204 ECU Control Unit Sensor Module Airbag A2048706826

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2035407408

Mercedes-Benz C W203 Rear Left Right Door Wiring Loom Harness A2035407308

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2535401001

Battery Cable Mercedes C238 C253 Starter Alternator Wiring Harness A2535401001

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0005463704

Mercedes C118 Positive Pole Battery Insulating Cap Cover Trim A0005463704

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1179001801

Mercedes W176 Air Module System Control Unit Module ECU A1179001801

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2469009112

Control Unit Mercedes W176 W246 Body Control Module BCM ECU A2469009112

PLN 161.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A6269000000

Mercedes W205 C 200 d 626951 626.951 136HP Engine Unit ECU A6269000000 Automatic

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2055451500

Power Connection Mercedes W205 W213 C238 X253 Battery Starter Alternator Wiring

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1775402500

Mercedes W177 W247 Battery Cable Negative Lead Terminal Harness A1775402500

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1698209926

Mercedes W169 W245 ECU Air Control Unit Sensor Module A1698209926

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009008905

Windscreen Camera Mercedes W207 W212 W246 Front Control Unit Module A0009008905

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2539009309

Mercedes C253 W293 Rain And Light Sensor Control Unit Module ECU A2539009309

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2215408445

Mercedes W221 Radar Distronic Adaptive Cruise Control Sensor A2215408445

PLN 1,614.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2749062100

Starter Motor Mercedes W213 C238 C253 Engine A2749062100

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2465407632

Battery Cable Mercedes W176 W246 Positive Wiring Starter Harness A2465407632

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A9425426040

Mercedes Sprinter W906 Fuse Box Relay Carrier Holder Bracket A9425426040

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2139003617

Telematics Module Mercedes W176 W207 W205 Bluetooth Control Unit A2139003617

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2048205497

Mercedes W204 Display Screen Radio Multimedia Navigation Sat Unit A2048205497

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1669005412

Mercedes W166 Door Module Rear Left N/S Control Unit ECU A1669005412

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1765406708

Mercedes W176 Door Harness Loom Cable Wiring Rear Left Right N/O/S A1765406708

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2129004911

Fuse Box Mercedes W207 Front Relay Control Unit Module SAM A2129004911

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1765450000

Mercedes-Benz A-Class W176 Bluetooth Unit Module Bracket Holder A1765450000

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2045451047

Control Unit Bracket Mercedes W204 W212 Audio Module Holder Mount A2045451047

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A9079009304

Mercedes Sprinter W907 Radar Sensor Distance Active Brake System A9079009304

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0131541702

Alternator Mercedes W638 OM611 Engine Alternator Generator A0131541702

PLN 283.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2079011700

Airbag Module Mercedes W204 W207 Air Bag SRS Control Unit ECU A2079011700

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2128208726

Mercedes W212 Door Module Rear Left N/S Control Unit ECU A2128208726

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A4478260000

Mercedes Vito W447 Headlight Turn Indicator Light Socket Plug A4478260000

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2038206626

Mercedes-Benz C-Class W203 Door Control Module Unit Rear Right O/S A2038206626

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0025428819

Mercedes W176 W246 Relay Current 4 Pin 12V Hella A0025428819

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2189058500

Mercedes CLS X218 Antenna Amplifier Rear Aerial Control Module A2189058500

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A9075402087

Mercedes W907 Starter Wiring Battery Alternator Cable Harness Loom A9075401305

PLN 227.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2218211251

Mercedes W221 Dashboard Instrument Cluster Panel Button Switch A2218211251

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2049060205-3

Mercedes W204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2059007218-2

Mercedes GLC X253 Rear Trunk Lid Automatic Closing Lock Mechanism A2059007218

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2711508033

Mercedes W204 Engine Wiring Harness Cable Loom A2711508033

PLN 1,234.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1729007500

Mercedes W204 Seat Module Memory Control Unit Front Left N/S A1729007500

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1669008606

Seat Module Mercedes W176 W246 Front Left N/S Memory Control Unit A1669008606

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2479005707

Mercedes W177 Front Seat Left N/S Module Control Unit ECU A2479005707

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1765405408

Mercedes-Benz A-Class W176 Front Door Cable Wiring Loom Harness A1765405408

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1668210351

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

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2049009301

Mercedes W212 Media Interface Control Unit Module Multimedia A2049009301

PLN 104.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2118705189

Sound Amplifier Mercedes W204 W211 W212 C219 Audio Harman Becker AMP A2118705189

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1729008500-2

Mercedes W166 W204 Display Screen Information Navigation Dashboard A1729008500

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1695451440

Mercedes W169 W245 Central Gateway Module Bracket Holder Mount A1695451440

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A6519007500-7

Mercedes A207 C207 E220 CDI 651.911 BE Engine ECU Kit Ignition + Key A6519007500

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2225404419

Mercedes W222 C238 C257 Electrical Wiring Harness Loom Cable A2225404419

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009056001

Battery Cable Mercedes W213 S213 Negative Lead Wiring Harness A0009056001

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2049001506

Mercedes W204 Coupe Door Module Front Right O/S Control Unit A2049001506

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1775405801

Mercedes W177 W247 Door Wiring Rear Left Right Cable Harness A1775405801

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2048207385

Mercedes-Benz C W204 Front Left Door N/S Control Unit Module A2048207385

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1698202985

Door Module Mercedes W169 W245 Front Left N/S Control Unit A1698202985

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009001017

Mercedes S205 W205 Air Conditioning Control Module A/C ECU Unit A0009001017

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2229009519-1

Mercedes C238 Head Unit Radio CD Player Audio Sat Nav Control A2229009519

PLN 2,279.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2769004901

Mercedes A238 Convertible E450 M276.823 Engine ECU Unit A2769004901 Automatic

PLN 1,899.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A6519007703

Mercedes W906 Glow Plug Relay Module Unit A6519007703

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2139005009

Mercedes W213 Door Module Rear Right O/S Control Unit A2139005009

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2709002100-4

Mercedes X117 CLA 45 AMG 4-Matic M133.980 Engine Control ECU Kit A2709002100

PLN 1,899.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0131547002

Mercedes W211 CLS C219 Alternator Generator OM642 Diesel 14V 180A A0131547002

PLN 360.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009007607

Mercedes-Benz E-Class W207 W212 Front Windscreen Windshield Lane Assist Camera

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009821923

Mercedes W205 Interior Trunk Fuse Box Automotive Pink Relay A0009821923 Red

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2048704626

Door Module Mercedes W204 Rear Right O/S Control Unit Module A2048704626

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1669006105

Door Module Mercedes W176 W246 Front Right O/S Control Unit A1669006105

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A9065460643

Mercedes Sprinter W906 Fuse Box Relay Bracket Monunt Holder A9065460643

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0025428719

Mercedes W176 W204 W207 W166 Relay 4 Pin Grey Hella A0025428719

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A6396890279

Mercedes Viano Vito W639 Radio Fan Adapter Control Unit Module A6396890279

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2218708326

Mercedes W221 Rear View Backup Camera Control Unit Module A2218708326

PLN 208.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1698203285

Mercedes A B Class W169 W245 Door Control Module Right Rear O/S A1698203285

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2215402250

Mercedes W221 SAM Relay Fuse Box Module Control Unit ECU A2215402250

PLN 664.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2059001722

Computer Mercedes W205 X253 W447 Navigation Radio Player Head Unit A2059001722

PLN 807.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A4475400600

Mercedes Vito W447 Battery Cable Alternator Wiring Diesel OM651 A4475400600

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0045423518

Mercedes ML W164 W204 W211 CLS C219 Acceleration Sensor Module Unit A0045423518

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A6549001400-1

Mercedes W213 E220 CDI 654.920 194HP Engine ECU Kit A6549001400 Automatic

PLN 1,899.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2218707526

Mercedes W221 Air Module Control Unit ECU SRS Module A2218707526

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A6519007500-26

Mercedes W204 W212 C220CDI 170HP OM651.911 Engine Control ECU A6519007500 Manual

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2055402850

C205 Fuse Box Mercedes C205 Electrical Interior Relay Fuse Socket Control A2055402850

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2045451040

Mercedes W204 W212 Multimedia Interface Unit Module Bracket Mount A22045451040

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2661503033

Mercedes W169 W245 M266 Petrol Engine Wiring Harness Loom A2661503033

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A4475406453

Battery Cable Mercedes Vito W447 Diesel OM651 Alternator Wiring A4475406453

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2115402105

Battery Cable Mercedes W211 Starter Alternator Wiring Harness A2115402105

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0005459712

Mercedes W447 OM654 Power Distributor Box Conectors Socket A0005459712

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1698208426

Mercedes-Benz A B W169 W245 Front Right Door O/S Control Unit Module A1698208426

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A6079001800-1

Mercedes W176 A180 CDI OM607.951 109HP Engine ECU Kit A6079001800 Automatic

PLN 949.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2139003217

Gearbox Module Mercedes W177 W205 W213 Control Unit ECU Automatic A2139003217

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A6461502734-1

Mercedes W204 C220 CDI 170HP 646.811 Engine Unit ECU A6461502734 Automatic

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1669008009

Mercedes GLE W166 Rear Door Wiring Control Module Right O/S Unit ECU A1669008009

PLN 165.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2108208726

Mercedes-Benz W210 S210 Alarm Anti Theft System Control Module Unit A2108208726

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2469000516

Radio CD Player Mercedes W176 W246 COMAND Nav Sat Head Unit A2469000516

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009005517

Mercedes W177 W205 W238 W257 Gearbox Control Unit Module ECU A0009005517

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2469068601

Battery Junction Block Mercedes W176 W246 Battery Plus Pole Terminal A2469068601

PLN 664.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2479002307

Mercedes W177 W247 4Matic Transfer Control Unit Module ECU A2479002307

PLN 569.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009003713

Mercedes W205 Tyre Pressure Control Module Unit A0009003713

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1669003712

Mercedes ML W166 SAM Module Control Unit ECU A1669003712

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2479002613

Mercedes CLA C118 W177 W205 W213 Telematics Control Unit Module A2479002613

PLN 151.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2641591400

Ignition Coil Mercedes W177 M260 Petrol Ignition Cable Connector A2641591400

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1729050151

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

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0025422619-3

Relay Mercedes W203 W204 W212 W639 W906 4-Pin Grey Hella 12V A0025422619

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

...

Showing 496-594 of 3165 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