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.
Make
Category
Subcategory
Condition
In Stock
Price
Part no. A0015422623-2
Mercedes W639 PDC Display Parking Sensor Screen Control Unit A0015422623
€37.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A0009058104-1
Mercedes W176 W205 W246 GLC C253 Front Bumper Sensor Radar Unit A0009058104
€279.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 5WA919297B-DGR
Audi A3 8V Control Unit PDC Parking Sensor Daytona Grey - Z7S 5WA919297B
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6C0919603A
VW Volkswagen Polo Mk5 6R Radio Multimedia Display Navigation Unit 6C0919603A
€142.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6C4971693E
VW Volkswagen Polo 6R Rear Door Harness Wiring Loom Cable Left N/S 6C4971693E
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7L5035738
Porsche Cayenne 9PA Rear Door Treble Speaker Audio Unit Right O/S 7E0035411B
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4G5971693
Audi A6 C7 4G Rear Door Card Harness Loom Cable Wiring Left N/S 4G5971693
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. PC3T-19J220-BC-1
VW Volkswagen Amarok Mk2 Front Door Camera Control Unit Left N/S PC3T-19J220-BC
€94.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 9383681-1
Mini F55 Fuse Box Front Body Control Module ECU BCM Unit 13275881
€113.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. MB3T-14A411-SRC
VW Volkswagen Amarok NF Ford Ranger Cab Wiring Harness Loom MB3T14A411SRC
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4G0035056-1
Audi A4 B8 Sat Nav Multimedia DAB Radio Control Head Unit 4G0035056
€237.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. N1WT-14F514-PFD
VW Amarok Mk2 Front Door Wiring Harness Keyless Left Right N/O/S N1WT-14F514-PFD
€28.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8P4971035AC
Audi A3 8P Door Wiring Driver's Side Harness Loom Electrical Cable 8P4971035AC
€142.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 1K0955559AB
Volkswagen Golf Mk5 Rain Sensor Front Windscreen Control Unit Module 1K0955559AB
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A1715405045-1
Mercedes SLK R171 Central Gateway Module ECU Control Unit A1715405045
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6787836-1
BMW E81 E87 LCI E90 LCI ABS DSC Module Pump Wiring Harness Cable 6954572
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8P0907530B
Audi A3 8P Gateway Control Unit Module ECU 8P0907530B
€37.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. MB3T-14B060-ABE-1
VW Volkswagen Amarok NF Engine Wiring Loom Harness Cable MB3T-14B060-ABE
€94.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4G5971085AF
Audi A6 C7 Rear Bumper Parking Sensor PDC Wiring Harness Loom Cable 4G5971085AF
€127.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2129007124
Mercedes W212 Fuse Box SAM Control Module Unit ECU A2129007124
€32.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A6519003701-2
Mercedes W212 Engine ECU Module Wiring Loom Harness Socket OM651 A6519003701
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6937515-9
BMW E87 E90 E91 Radiator Fan Cable Harness Loom Wiring 6937515
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4F0971845A-2
Audi A6 C6 Comfort Body Module Fuse Relay Box Control Unit 4F0971845A
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A0009068706
Mercedes W205 C43 Alternator Generator VALEO 200A 3.0 Petrol A0009068706
€113.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 1Z0035156F-1
Skoda Octavia II Multimedia Head Unit Bolero Radio CD MP3 Player 1Z0035156F
€42.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8Y0971365N
Audi A3 8Y Seat Belt Warning System Wiring Harness Cable Loom System 8Y0971365N
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8576333-8
BMW F20 F30 F32 xDrive N47N 163HP Engine Control ECU Kit DDE 8576333 Manual
€165.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8579479-6
BMW F20 F21 F30 F31 116HP N47N Engine Control Unit ECU Kit DDE 8579479 Manual
€275.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8512589
BMW E81 E82 E87 LCI E88 N47S 123d 204HP Engine Unit ECU Kit DDE 8512589 Manual
€341.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A6519007600-5
Mercedes W176 A180 CDI OM651.901 109HP Engine Unit ECU Kit A6519007600 Automatic
€208.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 1K0907115J-1
Volkswagen Golf Mk5 1K V 2.0 TFSI BWA 200HP Engine Unit ECU 1K0907115J Automatic
€189.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8W0959592G
Audi A4 B9 Front Door Module Control Unit Passenger Side 8W0959592G
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2710106644-1
Mercedes R171 SLK200 M271.944 163HP Engine Control ECU A2710106644 Automatic
€151.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8664661-3
BMW F23 F30 F32 228i 328i 428i N20 184HP Engine Unit ECU DME Kit 8664661 Manual
€351.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A0009067902
Mercedes W204 S204 C204 Alternator Generator 150A 14V 1.8 Petrol A0009067902
€37.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8X0959795A
Audi A1 8X Q3 8U Rear Door Module Control Unit ECU 8X0959795A
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2535400701-1
Mercedes A238 M276 Engine Alternator Wiring Loom Cable Harness A2535400701
€37.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 1K0906093D
Volkswagen Golf Mk5 Fuel Pump Control Relay Module Unit ECU 12V 1K0906093D
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 5A57FC8
BMW F20 F21 F22 F30 X3 F25 M Sport Radio Remote Key Fob Control 868 Mhz 5A57FC8
€56.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8626472-1
BMW F20 F21 M135i N55 326HP Petrol Engine Control Unit ECU DME 8626472 Automatic
€284.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8L0035223
Audi A3 8L BOSE Sound Amplifier Unit Module Control ECU 8L0035223
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4B0951173
Audi A3 8L A4 B5 A6 C5 Alarm Control Module Unit ECU 4B0951173
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 99660410300
Porsche Boxster 986 2.7 Petrol Engine Starter Motor Unit 99660410300
€28.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 1K0959433BL
VW Golf MK5 Body Control Comfort Module BCM Convenience Unit ECU 1K0959433BL
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. MB3G-12B565-FB
VW Amarok Mk2 Automatic Gearbox Transmission Control Module Unit MP3P-14F106-AA
€118.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. ML3A-5L200-AD
Volkswagen Amarok Mk2 DPF Filter Pressure Sensor 3.0 TDI ML3A-5L200-AD
€113.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. ML34-13C148-AE
VW Volkswagen Amarok NF Front Lamp Headlight Control Unit Module ML3413C148AE
€70.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. P1WT-19H517-AE
VW Volkswagen Amarok Mk2 Auto Brake Trailer Module Control Unit P1WT-19H517-AE
€123.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 5G0971175C
Volkswagen Golf Mk7 Rear Tailgate Boot Lid Wiring Adapter Loom 5G0971175C
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2229009211-1
Mercedes W207 W212 Tuner Box Digital Satellite Radio Control Unit A2229009211
€66.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 1K0971349CR
Skoda Octavia 1Z Audi A3 8P Alternator Wiring Harness Loom Cable 1K0971349CR
€56.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8J0971349A
Audi TT 8J Alternator Main Cable Wiring Harness Loom 8J0971349A
€32.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 1K0955559M
Volkswagen VW Golf Mk5 Rain Sensor Windscreen Control Unit Module 1K0955559M
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 04L907309R-4
Skoda Octavia III 5E 2.0 TDI 184HP CUNA Engine Control ECU Kit 04L907309R Manual
€142.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7P6035552M
VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Left N/S 7P6035552M
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2749000800-7
Mercedes W205 C200 274.920 184HP Engine Control ECU Kit A2749000800 Automatic
€303.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8630125-4
BMW F20 F21 F30 116i 316i N13 136HP Engine Control ECU Kit DME 8630125 Automatic
€503.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 03E906019M-2
Volkswagen Polo 6R 1.2 Petrol CGPB 60HP Engine Control ECU Kit 03E906019M Manual
€161.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 070906016B
Volkswagen Phaeton 3D 5.0 V10 AJS 313HP Engine Control ECU 070906016B Automatic
€85.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2701501633
Mercedes C117 W176 A180 W246 M270 Engine Wiring Harness Cable Loom A2701501633
€127.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 02E911024D
Volkswagen Golf Mk7 Audi A3 8V Engine Starter Motor Start Stop Denso 02E911024D
€32.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 3Q0907530Q
Volkswagen VW Golf Mk7 Gateway Control Unit Module ECU GW MQB High 3Q0907530Q
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A4535402703
Smart ForTwo C453 Battery Negative Minus Wiring Cable A4535402703
€32.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7P0907801D
VW Touareg 7P Handbrake Electric Parking Brake Control Module 7P0907801D
€94.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2129006709-1
Mercedes C207 W212 Head Unit High Line Radio Sat Nav DVD Bluetooth A2129006709
€99.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2048204697-2
Mercedes W204 Dashboard Navigation Central Display Screen Monitor A2048204697
€170.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8T0959793P
Audi A4 B8 A5 8T Door Control Unit Module Front Driver's Side 8T0959793P
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A6519000601-5
Mercedes W906 313 CDI OM651 129HP Diesel Engine Control ECU A6519000601 Manual
€132.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 9247874-2
BMW F06 F12 F13 Central Information Display Screen CIC Navigation 9247874
€104.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 141951253B-4
Audi VW Volkswagen Seat Relay Number 53 Unit Module 4 Pins Set Of 4 141951253B
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7640015-6
BMW E90 E91 E92 320i N43 170HP Engine Control Unit ECU DME 7640015 Automatic
€113.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 2432355
Ford Transit Custom Alternator 240A 14V 2.0 EcoBlue GK2T-10300-CC
€189.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 5L0051236H
Skoda Yeti 5L Octavia III Card Map Sat Navi Navigation Europe 2015 5L0051236H
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4G5971030DJ
Audi A6 C7 Front Door Wiring Harness Loom Left N/S Passenger's Side 4G5971030DJ
€32.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2055408040
Mercedes W205 Front Door Electric Wiring Harness Loom Cable Left N/S A2055408040
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2055407942
Mercedes W205 Front Door Harness Wiring Cable Left Right N/O/S A2055407942
€32.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2055409240
Mercedes W205 Front Door Electric Wiring Harness Loom Cable Left N/S A2055409240
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2055401542
Mercedes W205 Rear Door Harness Wiring Cable Left Right N/O/S A2055401542
€61.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7638003
BMW F20 F21 F22 F23 F34 LCI F22 F30 F36 Starter Ground Cable 7638003
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8F0971029AM
Audi A5 8T Front Door Electric Wiring Loom Harness Driver's Side 8F0971029AM
€42.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8F0971030AM
Audi A5 8T Front Door Electric Wiring Loom Harness Passenger's Side 8F0971030AM
€42.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8F0959655C
Audi A5 8F Cabrio Air Module Control Unit ECU Crash Control Sensor 8F0959655C
€28.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 198393-01
Volkswagen Polo 6R Light Lamp Control Module Unit ECU 198393
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 5P0951171C
Seat Altea 5P1 Interior Ultrasound Alarm Sensor Module Unit 5P0951171C
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7N0907530R
VW Volkswagen Golf 6 Seat Altea 5P1 Gateway Control Unit Module ECU 7N0907530R
€51.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A6461505091-2
Mercedes W203 C220 CDI 150HP 646.963 Engine Control ECU Kit A6461505091 Automat
€208.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6C0907159B
Volkswagen Polo 6C Body Sound Impact Control Module ECU 6C0907159B
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6C4971694E
VW Volkswagen Polo 6R Rear Door Cable Harness Wiring Loom Right O/S 6C4971694E
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8V4971029M
Audi A3 S3 8V Front Door Wiring Harness Loom Cable Driver Side 8V4971029M
€28.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 431951253H
Audi TT 8N A4 B5 A6 C5 A8 D2 Relay Control Unit Module 12V 4 Pins 431951253H
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 3Q0907530G
Audi S3 8V Central Gateway Control Unit Module Relay ECU 3Q0907530G
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6C0915181C
VW Volkswagen Polo 6R Negative Minus Earth Cable HV Battery Harness 6C0915181C
€28.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 07Z911023BX
Volkswagen Phaeton 3D Engine Starter Motor Acutator 5.0 V10 Diesel 07Z911023BX
€142.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8D0951253-1
Audi A4 B6 B7 B8 Q7 4L A6 C7 A8 D4 Multi Use Relay Unit Module 4 Pins 8D0951253
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A6261410000
Mercedes S205 OM622 Diesel Engine Throttle Body Regulator Actuator A6261410000
€113.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8507909
BMW F20 F30 Wiring Harness Engine Transmission Module Diesel Manual N47N 8507909
€94.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2709000900-8
Mercedes W246 B180 270.910 122HP ECU Wiring Loom Harness Cable Plug A2709000900
€23.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8E0907279K
Audi A4 B7 Body Control Module BCM Comfort Control Unit Power Supply 8E0907279K
€23.95
Free delivery - Tue, Dec 16
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 .