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.

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Products in promotion

Part no. A2479009312

Mercedes W910 Telematics Module Communication Blutooth Control A2479009312

PLN 341.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2045458401

Mercedes W204 Fuse Box Terminal Connection Unit A2115452301

PLN 854.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1685405008

Mercedes A-Class W168 Door Cable Harness Wiring Loom Front Right A1685405008

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1718200015

Mercedes SLK R171 Rear Window Heating Cable Loom Heat Wiring Harness A1718200015

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2465401950

Battery Base Mercedes C117 W176 W246 Power Fuse Relay Box A2465401950

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2048207485

Mercedes W204 Front Door Control Unit Module Right O/S A2048207485

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2129003708

Mercedes W212 COMAND Radio Head Unit Navi CD DVD Player Navigation A2129003708

PLN 807.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1729006609-2

Mercedes SLK R172 Radio CD Player Sat Nav Comand Head Unit A1729006609

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2135403205

Lever Sensor Wiring Mercedes W213 C238 Rear Left Right N/O/S Cable A2135403205

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A9065400341

Battery Cable Mercedes Sprinter W906 Negative Lead Wiring Harness A9065400341

PLN 51.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009003606

Mercedes W176 W246 Automatic Transmission Control Uni A0009003606

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0061511001

Starter Motor Mercedes W906 M272 Engine Diesel Bosch A0061511001

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1775408220

Door Wiring Mercedes W177 W247 Front Passenger Side Cable Harness A1775408220

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2129005812

Mercedes S204 Estate SAM Module Fuse Box Relay Control Unit A2129005812

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1698207226

Door Module Mercedes W169 W245 Front Right O/S Control Unit A1698207226

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2229009910

Mercedes W205 W213 C238 Seat Heating Heater Module Control Unit ECU A2229009910

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1779002410

Mercedes W177 Air Module SRS System Control Unit ECU A1779002410

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0061514501

Starter Motor Mercedes W204 W212 Sprinter W906 OM651 Diesel Engine A0061514501

PLN 161.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2128204585

Mercedes-Benz A B W176 W246 Glove Box Aerial Antenna Booster Amplifier

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0035420219-1

Relay Mercedes W639 W906 5-Pin Black 12V 20A A0035420219 Set X2

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2115452647

Bracket Mount Mercedes W211 W219 Control Unit Module SAM Holder A2115452647

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A4479001118

Mercedes W447 Front Air Module Control Unit ECU A4479001118

PLN 1,899.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2059006615

Mercedes W205 Windscreen Rain Sensor Front Control Unit A2059006615

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0001502780

Mercedes W203 CL203 W204 M272 Petrol Ignition Coil Cable Connector A0001502780

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2049060305

SAM Module Mercedes W204 Control Unit Electrical Fuse Box Unit A2049060305

PLN 370.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1648208289

Mercedes ML W164 Radio CD Player Audio Stereo Head Unit A1648208289

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0025428319

Mercedes W176 W204 C207 W212 C218 W246 Relay 4-Pin Black Hella 12V A0025428319

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A6261500075

Mercedes W205 Alternator Protective Cover Metal Sheet A6261500075

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A6541592501

Mercedes W213 OM654 Engine Wiring Cable Cover Duct Bracket Channel A6541592225

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A6395480174

Mercedes-Benz Vito W639 Fuse Box Cooling Outlet Pipe Air Duct A6395480174

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0025422519

Mercedes W168 W169 W245 Blue Relay 4-Pin Tyco A0025422519

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1728100011-1

Navigation Processor Mercedes W176 W212 Control Unit Module NTG 4.5 A1728100011

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2749000800-5

Mercedes W205 C200 274.920 184HP Engine ECU Kit A2749000800 Key Lock Automatic

PLN 1,092.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009067702

Alternator Generator Mercedes W204 W207 W212 Engine Diesel 180A 14V A0009067702

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1715420123

PDC Display Mercedes W169 W211 Parking Distance Sensor Control Unit A1715420123

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A4479060400

Mercedes W447 Fuse Relay Box Module Control Unit A4479060400

PLN 263.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2079002800

Mercedes W207 Convertible Door Module Front Right O/S Control Unit A2079002800

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2218705089

Mercedes W221 Audio Amplifier Sound Harman Becker Control Unit A2218705089

PLN 4,084.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2034400033-2

Mercedes CLC CL203 Wiring Loom Cable Door Front Left Right N/O/S A2034400033

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A6511504133

Mercedes W204 W212 Engine Wiring Diesel Harness Loom Cable E250 CDI A6511504633

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2118209126

Mercedes-Benz C E Class W203 W211 Alarm Anti Theft System Control Module Unit

PLN 18.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2128203485

Door Module Mercedes W204 W212 Front Left N/S Control Unit Module A2128203485

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2218702286

Mercedes W221 Front Seat Heater Control Unit Module ECU A2218702286

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2535405429

Mercedes C253 OM656 Diesel Engine Motor Wiring Loom Cable Harness A2535405429

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A6561593100

Mercedes W213 OM656 Diesel Engine Wiring Guide Cable Duct A6561593100

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1728208710

Mercedes W176 W246 Roof Towing Alarm Sensor Switch Module A1728208710

PLN 46.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009000716

Mercedes Vito W447 Diesel Adblue Module Control Unit ECU A0009000716

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2218708992

Mercedes W221 C216 Telephone Bluetooth Connection Control Module A2218708992

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1665459340

Mercedes W166 C292 Fuse Box Relay Control Unit Module A1665459340

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A6421508900-1

Mercedes W212 E350 CDI OM642.852 Engine Control Unit Module ECU A6421508900

PLN 854.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A9065410140

Mercedes-Benz Sprinter W906 Battery Tray Holder Mounting Bracket A9065410140

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A9078209400

Mercedes Sprinter W907 W910 Radio Stereo Player Head Unit A9078209400

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2475457300

Mercedes W177 Fuse Box Relay Cover Lid Control Unit Bracket Trim A2475457300

PLN 70.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1779001704

Mercedes V177 Door Module Rear Right Control Unit A1779001704

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009006302

Mercedes W176 Automatic Gearbox Transmission Module Control Unit ECU A0009006302

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2059001240

Mercedes GLC 220d X253 Air Conditioning Climat A/C Control Module A2059001240

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2229009708

Mercedes W205 Body Control Comfort Unit Module BCM Unit ECU A2229009708

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2601503100

Mercedes W177 M260 Petrol Engine Wiring Cable Loom Harness A2601503100

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2469050101

Mercedes W176 W246 Rear Boot Lid Tailgate Antenna Booster Amplifier

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0025421419-1

Relay Mercedes W163 W169 W203 W210 Relay Unit 5-Pin Yellow Tyco A0025421419

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2079004400

Rear Window Module Mercedes W207 C207 Coupe Control Unit ECU A2079004400

Product currently unavailable

Part no. A1779005505

Door Module Mercedes W177 W247 Rear Left Right N/O/S Control Unit A1779005505

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2139008530

Mercedes W213 W447 Transmission Gearbox Control Unit Module ECU A2139008530

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2129001829

Mercedes C207 W212 Front Right Door O/S Control Unit Module A2129001829

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0035422819

Battery Relay Mercedes W176 W246 W447 Cut Off Module Control Unit A0035422819

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2218101817-1

Mercedes W221 Headlining Interior Mirror Rear Left Right N/O/S A2218101817

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2129060605

Mercedes W212 Fuse Box Rear Relay Control Unit Electric Module SAM A2129060605

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0004461160

Mercedes Sprinter W906 FleetBoard Onboard Time Recorder Control Unit A0004461160

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2049009614

Mercedes W204 CD Player Radio Navigation Sat Nav Head Unit A2049009614

PLN 1,234.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2048200015

Telephone Cable Mercedes W204 C207 W212 Wiring Adapter Line A2048200015

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2035451303

Mercedes CL203 W203 Fuse Box Cover Engine Bay Relay A2035451303

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0018209126

Mercedes CLC CLK Class CL203 W203 C209 Crash Sensor A0018209126

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A9075402605

Mercedes W907 Fuse Box Control Unit Module Q2 A9075402605

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2129001711

Mercedes W212 PDC Parking Distance Control Unit Module Sensor A2129001711

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2208203226

Seat Heating Sensor Mercedes W209 W211 W220 Left N/S Control Unit A2208203226

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2239052400

Mercedes W177 W223 W247 Crash Impact Deployment Sensor Unit A2239052400

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1695406409

Mercedes W169 W245 Battery Earth Negative Cable Wiring Loom A1695406409

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2125403005

Mercedes W212 M271 Wiring Battery Alternator Starter Harness Cable A2125403005

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2139004625

Mercedes W213 C238 C253 C257 Air Module Control ECU Sensor A2139004625

PLN 322.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1679008311

Mercedes C238 Door Control Unit Module ECU Front Left N/S A1679008311

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A9067601304

Mercedes-Benz Sprinter W906 Front Right Door O/S Handle Bowden Pull Cable

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2535400901

Starter Cable Mercedes W205 GLC X253 M274 Electrical Wiring Harness A2535400901

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2139068701-1

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Unit A2139068701

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A4479002405

Head Unit Mercedes W447 Radio Navigation Audio 15 Control Unit A4479002405

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2059001611

Mercedes W205 Door Module Front Right O/S Control Unit ECU A2059001611

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1645403132

Mercedes-Benz M-Class ML W164 Wiring Loom Cable Harness Fuel Tank A1645403132

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0005408250

Fuse Box Mercedes W205 W213 C238 C253 Control Unit Module A0005408250

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A6461503272

Mercedes W211 E220 CDI 646.821 170HP Engine Unit ECU Kit A6461503272 Key Lock

PLN 712.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2135406631

Mercedes W213 Rear Door Wiring Harness Cable Left N/S A2135406631

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2219000100

Mercedes W221 Digital Audio DAB Receiver Control Unit Module A2219000100

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2139008730

Mercedes C253 W177 W205 W247 Gearbox Module Control ECU Automatic A2139008730

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2055404913

Mercedes W205 Wiring Cable Harness Center Console Ambient Lightning A2055404913

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A6549001300

Glow Plug Relay Mercedes W213 C238 Diesel OM654 Preglow Module A6549001300

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2139001909

Mercedes W213 Ambient Lighting Control Unit Module ECU A2139001909

PLN 170.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2059005222

Seat Module Mercedes W205 W253 Memory Control Unit Passenger's Side A2059005222

PLN 161.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2125400080

Mercedes W212 Fuse Box Housing Relay Unit Module A2125400080

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2205401124-1

Fuse Box Unit Mercedes CL S C215 W220 1 Front Right O/S ECU A2205401124

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2129003508

Mercedes W207 W906 Fuel Pump Control Unit Module ECU A2129003508

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009001704

Fuel Pump Module Mercedes W176 W204 C207 W212 W246 Control Unit ECU A0009001704

PLN 265.95

Free delivery - Mon, Nov 24

If paid before 14:00

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Showing 991-1089 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 .

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