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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Make
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In Stock
Price
Part no. A0025407097-1
Mercedes W221 Air Pump Valve Pressure Electric Change Over Sensor A0025407097
£13.95
Free delivery: Feb 27
If paid before 14:00
Part no. A0009822023
Mercedes W204 W212 W221 Battery Relay Module Unit A0009822023
£18.95
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A0009003101
Mercedes W204 W212 W221 Fuel Pump Module Control Unit A0009003101
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
Part no. N000000004039
Mercedes ML GLC W164 X164 W204 Additional Backup Battery 12V 1.2Ah N000000004039
£18.95
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A1668210151
Impact Sensor Mercedes W166 W176 W246 Crash Sensor A1668210151
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
Part no. A0038207726
Mercedes W212 Siren Alarm Horn Signal Module Unit A0038207726
£18.95
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A0009820412
Mercedes W176 W205 W212 Voltage Converter Power Distributor Plug A0009820412
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A0009820212
Mercedes W176 W212 W246 Voltage Converter Inverter Power Distributor A0009820212
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A0018204535
Microphone Mercedes W639 W906 Hands-Free Interior Mic Unit A0018204535
Promo price
£32.95
£28.01
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A1725420023
Mercedes W176 W204 W246 Front Parking Sensor Display Control PDC A1725420023
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. rhd-A2075402750
Fuse Box Mercedes W204 S204 Front Relay SAM Control Unit Module A2075402750
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. rhd-A1665420418
Mercedes W212 Negative Cable Battery Terminal Wiring A1665420418
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2129000306
Mercedes W212 Fuel Pump Module Control Unit A2129000306
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A1695450540
Fuse Box Mercedes W169 W245 Electrical Relay Control Unit A1695450540
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2128204926
Mercedes W212 Crash Impact Air Module Sensor Front Unit A2128204926
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
Part no. A2129004314
Door Module Mercedes W204 W212 Front Right O/S Control Unit A2129004314
£13.95
Free delivery: Feb 27
If paid before 14:00
-40%
Part no. A2059004113
Mercedes S205 Display Screen Multimedia Navigation Sat Head Unit A2059004113
Promo price
£47.95
£28.77
Free delivery: Feb 27
If paid before 14:00
Part no. A0045468240
Distributor Box Mercedes W204 W212 W906 Front Block Control Unit A0045468240
£18.95
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2048210651
Mercedes W204 Air Module Impact Crash Sensor Door A2048210651
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A2469012504
Mercedes W176 W246 Rain Sensor Light Control Unit Front Windscreen A2469012504
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A6395450301
Mercedes W639 Fuse Box Relay Control Unit Electric Module SAM A6395450301
Promo price
£142.95
£121.51
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2129004502
Mercedes W204 W207 Front Right Door Control Unit Module A2129004502
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
Part no. A2229008911
Tuner Box Mercedes W213 W205 W222 Digital Audio Control Unit DAB ECE A2229008911
£47.95
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A0025422619
Mercedes ML W163 Relay 4-Pin Grey Tyco A0025422619
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. rhd-A6398200326
Mercedes-Benz Vito Viano W639 Front Right Door O/S Control Module A6398200326
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A0009061505
Mercedes W212 W213 W205 W218 Positive Battery Tray Clamp A0009061505
Promo price
£32.95
£28.01
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A0009820512
Energy Distributor Mercedes W177 W212 Power Control Unit Module A0009820512
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A2035400031
Mercedes CLK W203 C209 Negative Battery Terminal Cable A2035400231
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A0028201326
Mercedes SLK R171 Crash Sensor Air Bag Impact Module Control Unit A0028201326
Promo price
£94.95
£80.71
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A9069000401
Mercedes Sprinter W906 Door Module Front Right O/S Control Unit A9069000401
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. rhd-A2035400250
Mercedes-Benz C CLK Class W203 C209 Fuse Distribution Dashboard A2035400250
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A1179008600
Airbag Module Mercedes w176 Air Bag SRS Control Unit ECU A1179008600
Promo price
£37.95
£32.26
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A0009055103
Distance Radar Module Mercedes W176 W207 W212 Front Distronic Unit A0009055103
Promo price
£161.95
£137.66
Free delivery: Mar 2 – 9
If paid before 14:00
Part no. A0009002414
Module Fuel Pump Mercedes W205 C253 Control Module Unit A0009002414
£18.95
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A9065420518
Mercedes-Benz W639 W906 ESP Yaw Rotation Rate Sensor Control Unit A9065420518
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A0025421319
Mercedes W204 Genuine Universal In Car Black Relay 4-Pin Tyco A0025421319
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
Part no. A2079010600
Rain Sensor Mercedes W204 W212 Light Solar Condensation Control Unit A2079010600
£13.95
Free delivery: Feb 27
If paid before 14:00
Part no. A0009007604
Adblue Module Mercedes W205 W213 W177 W907 SCR Control Unit EGR ECU A0009007604
£13.95
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. rhd-A6398200026
Mercedes-Benz Vito Viano W639 Front Left Door N/S Control Module A6398200026
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A0035422819
Battery Relay Mercedes W176 W246 W447 Cut Off Module Control Unit A0035422819
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A0009004802
Air Module Mercedes W639 W906 ECU Control Unit Crash Impact A0009004802
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A4478200087
Mercedes Sprinter W906 Connector AUX USB Adapter Port Socket A4478200087
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-40%
Part no. A1699010100
Mercedes W169 W245 Sam Control Module Fuse Box Unit A1699010100
Promo price
£47.95
£28.77
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2038201485
Mercedes W203 Door Control Module Front Right O/S A2038201485
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-40%
Part no. A1669003407
Mercedes W176 W204 Digital Audio DAB Receiver Control Unit Module A1669003407
Promo price
£23.95
£14.37
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A2129004014
Mercedes W204 W212 Front Door Module Control Unit Module Left N/S A2129004014
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
Part no. A0061514501
Starter Motor Mercedes W204 W212 Sprinter W906 OM651 Diesel Engine A0061514501
£32.95
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A0025428919
Relay Mercedes W176 W246 5-Pin Yellow Hella 12V A0025428919
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
Part no. A1668210351
Mercedes-Benz A CLA C117 W176 Airbag Impact Crash Sensor A1668210351
£13.95
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A1648203085
Mercedes ML W164 Window Windscreen Rain Light Sensor A1648203085
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A6459060800
Starter Motor Mercedes W176 W246 C117 Diesel Engine Denso A6459060800
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
Part no. A2079013700
Mercedes-Benz E-Class W207 Windscreen Windshield Rain Sensor Control Unit
£18.95
Free delivery: Feb 27
If paid before 14:00
Part no. A2128702751
Control Panel Mercedes W212 Comand Navi CD Switch Push-Button A2128702751
£42.95
Free delivery: Feb 27
If paid before 14:00
Part no. rhd-A0009053002
Battery Cable Mercedes W204 S204 Negative Lead Wiring Harness A0009053002
£13.95
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A9066880008
Mercedes W906 Cover Footwell Fuse Box Trim OBD Grey A9066880008
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. rhd-A2075400740-1
Fuse Box Mercedes W204 Battery Terminal Control Unit Module A2075400740
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A0045423518
Mercedes ML W164 W204 W211 CLS C219 Acceleration Sensor Module Unit A0045423518
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-40%
Part no. A0325456926
Mercedes W176 W205 Exhaust Control Valve Flap Actuator Module Unit A0325456926
Promo price
£94.95
£56.97
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A0009820912
Mercedes W176 W222 W246 Voltage Converter Power Distributor Fuse A0009820912
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A1699000700
Mercedes A B Class W169 W245 Door Control Module Front Right O/S A1699000700
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. rhd-A2034408932
Mercedes W203 Battery Starter Wiring Harness Cable A2034408932
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A1669003309
Mercedes W176 W204 W246 Headlight Headlamp Range Control Unit Module A1669003309
Promo price
£37.95
£32.26
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2129003408
Mercedes W204 W221 Fuel Pump Module Control Unit A2129003408
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A1698204185
Mercedes A B Class W169 W245 Airbag System Control Unit Module ECU A1698204185
Promo price
£37.95
£32.26
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A2058200526
Mercedes W213 S213 Multimedia USB SD Card Reader Port Socket Module A2058200526
Promo price
£32.95
£28.01
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2129006318
Door Module Mercedes W204 W212 Front Left N/S Control Unit Module A2129006318
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A0035464240
Mercedes W906 Distributor Box Battery Cable Unit A0035464240
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A9069014700
Air Module Mercedes W639 W906 Control Unit ECU Air Sensor 0285011060
Promo price
£113.95
£96.86
Free delivery: Feb 27
If paid before 14:00
Part no. A2038207385
Mercedes W203 ECU Control Unit Crash Impact Sensor Module Air Module A2038207385
£18.95
Free delivery: Feb 27
If paid before 14:00
Part no. A0009067702
Alternator Generator Mercedes W204 W207 W212 Engine Diesel 180A 14V A0009067702
£75.95
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2049012704
Mercedes W204 ECU Control Unit Crash Impact Sensor Air Module A2049012704
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A1695450001
Mercedes-Benz A B Class W169 W245 Fuse Box Relay Module Unit A1695450001
Promo price
£16.95
£14.41
Free delivery: Feb 27
If paid before 14:00
Part no. A1719010100
Mercedes SLK R171 Heated Heating Seat Control Unit Module A1718201626
£37.95
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A0009001808
Mercedes W205 Park Assist PDC Trunk Control Unit Module A0009001808
Promo price
£56.95
£48.41
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A1695451940
Mercedes W169 W245 Fuse Box Module Unit A1695451940
Promo price
£28.95
£24.61
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A9068204126
Mercedes Sprinter W906 Door Module Front Right O/S Control Unit A9068204126
Promo price
£23.95
£20.36
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. rhd-A6429061100
Engine Starter Motor Mercedes W204 C207 W212 W221 OM642 Diesel A6429061100
Promo price
£32.95
£28.01
Free delivery: Feb 27
If paid before 14:00
Part no. A2129006012
Fuse Box Mercedes W204 W212 SAM Relay Control Unit Module A2129006012
£75.95
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. rhd-A2044402613
Battery Cable Mercedes W204 Positive Alternator Wiring A2044402613
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-40%
Part no. A1695454332
Mercedes-Benz A B Class W169 W245 Sam Control Module Fuse Box Unit A1695454332
Promo price
£32.95
£19.77
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A1729058200
Mercedes W204 W207 W212 W221 Humidity Temperature Sensor Unit A1729058200
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A0045429118
ECU Module Mercedes W169 W211 W245 Yaw Rate Sensor Unit ESP A0045429118
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A9069005701
Mercedes W639 W906 Air Module SRS Control Unit ECU A9069005701
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-40%
Part no. A1699002000
Head Unit Mercedes W169 W245 CD Player Radio Audio A1699002000
Promo price
£28.95
£17.37
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2035450803
Mercedes W203 Battery Terminal Fuse Box Electrical Unit A2035450803
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A2049007508
Mercedes W204 Display Screen Monitor Radio Sat Nav Navigation Unit A2049007508
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2229055804
Mercedes CLA C117 W176 W205 Aerial Antenna Amplifier Unit A2229055804
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A2079011700
Airbag Module Mercedes W204 W207 Air Bag SRS Control Unit ECU A2079011700
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A2129009729
Mercedes W176 W207 W212 Keyless Door Lock Module ECU Unit A2129009729
Promo price
£18.95
£16.11
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2165420018
Yaw Rate Sensor Mercedes W169 W245 W211 W219 Turn Rate Sensor A2165420018
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A9079005303
Mercedes Sprinter W907 W910 Control Unit Module ECU A9079005303
Promo price
£75.95
£64.56
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A1715420123
PDC Display Mercedes W169 W211 Parking Distance Sensor Control Unit A1715420123
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A6511501433
Mercedes W176 W246 Glow Plug Wiring Harness Loom OM651 Engine A6511501433
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A1769052400-1
Mercedes W176 Pressure Crash Impact Sensor Control Module A1769052400
Promo price
£47.95
£40.76
Free delivery: Feb 27
If paid before 14:00
-40%
Part no. A2048707658
Mercedes W204 Radio Control Function Button Knob Controller Unit A2048707658
Promo price
£37.95
£22.77
Free delivery: Feb 27
If paid before 14:00
-5%
Part no. A2038301613
Mercedes C CLK Class W203 C209 Engine Bay Fuse Box Right O/S Cover A2038301613
Promo price
£13.95
£13.25
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A9079001705
Mercedes Sprinter B907 Ignition Control Module Keyless A9079001705
Promo price
£104.95
£89.21
Free delivery: Mar 2 – 9
If paid before 14:00
-15%
Part no. A1698705894
Mercedes W169 W245 CD Player Radio Stereo Head Unit A1698705894
Promo price
£62.95
£53.51
Free delivery: Feb 27
If paid before 14:00
-15%
Part no. A2049009004
Parking Module Mercedes W204 S204 PDC Distance Control Unit Sensor A2049009004
Promo price
£18.95
£16.11
Free delivery: Feb 27
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 .