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. 04L907309K-1
Audi Q3 8U 2.0 TDI Quattro Engine ECU Kit 04L907309K Ignition + Key
€161.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 5Q4959593B
Seat Leon Mk3 5F Door Module Control Unit Front Driver's Side Door 5Q4959593B
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 070903327C
Volkswagen Touareg Transporter 2.5TDI Alternator Coupling Sleeve Belt 070903327C
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 4H0959795B
VW Touareg 7L Rear Door Control Unit Module Left Right N/O/S ECU 4H0959795B
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. NU5T-14B531-JA
VW Amarok Mk2 Door Module Control Unit Front Rear Driver's Side NU5T-14B531-JA
€56.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 2622341
BMW 2 3 5 Series F10 F22 F30 F32 Antenna Amplifier Module Trap Circuit 2622341
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 6947817
BMW E65 E66 IDrive Control Unit Front Centre Console Module ECU 6947817
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A2075402013
Door Cable Mercedes W212 Wiring Loom Front Left Right Door N/O/S A2075402013
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A2139005223
SAM Module Mercedes W213 C238 Control Unit Front ECU A2139005223
€37.95
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. 7188487
BMW E93 Convertible Battery Mounting Bracket Clamp Bolt Holder Mount 7188487
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 4H0919275-SHB
VW Golf Mk6 Audi TT 8J Parking Distance Control Sensor Shark Blue Metallic - A5Q
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A1331510745
Mercedes C117 CLA 45 AMG Heat Shield Alternator Plate Petrol M133 A1331510745
€28.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 5M0907357C
Volkswagen VW Tiguan 5N Headlight Range Control Unit Module ECU 5M0907357C
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8387568
BMW 7 Series E65 E66 Battery B Engine Compartment Terminal Point 8387568
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. 7M0951253C-1
VW Volkswagen T5 Audi Seat Skoda Relay Black Control Unit 5 Pin 12V 7M0951253C
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. GK2T-9K499-ABB
Ford Transit Custom Engine Fuse Box Wiring Loom Harness Cable GK2T9K499ABB
€113.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 6824110
BMW 3 F30 LCI 330e Hybrid High Voltage Battery Wiring Loom Harness 6821420
€94.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 7619144
Engine Wiring BMW F10 F20 F21 F30 N20 Loom Harness Ignition Module 7619144
€56.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A1729058200
Mercedes W204 W207 W212 W221 Humidity Temperature Sensor Unit A1729058200
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A2229001414
Module Mercedes C205 Front Door Left N/S Control Module Unit A2229001414
€28.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8586569
BMW F20 F21 F30 F31 LCI Gearbox Transmission Harness Wiring Loom Cable 8586569
€89.95
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. 4H0881073B
Audi A8L 4H Front Seat Air Pump Control Module Unit 4H0881073B
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8510829-5
BMW E90 E91 LCI N47N 320d ECU KIT DDE 8510829 CAS3 + Key Manual
€70.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8K0959792
Audi A4 B8 Door Module Control Unit Module ECU Front Left N/S 8K0959792
€32.95
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. A2059009230
Air Conditioning Module Mercedes W205 C253 A/C Control Unit ECU A2059009230
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9270035
Antenna Aerial Amplifier Mini F55 F56 F60 Rear AM/FM DAB 9270035
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A2059067200
Mercedes W205 S205 W213 Fuse Box Front Relay Control Unit Module A2059067200
€28.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8721882
BMW F20 F21 F22 F30 F31 LCI Head Unit Media DAB Navigation Professional 8721882
€522.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9259354
BMW F10 F20 F30 Camera Module Reversing Rear View Camera Control 9259354
€108.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8636070
BMW 3 F30 LCI 330e B48X Engine Gearbox Module Wiring Cable Loom Harness 8636070
€113.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A0051513901-1
Mercedes W203 W211 Kompressor M271 Petrol Engine Starter Motor A0051513901
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8583653
BMW F10 F30 F31 LCI N57N Wiring Harness Engine Glow Module 8583653
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A1645400350
Mercedes-Benz M-Class ML W164 Fuse Prefuse Box Jump Start Terminal A1645400350
€28.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 1K0906093H
Seat Ibiza 6J 1.2 TSI Petrol Fuel Pump Control Unit Relay 1K0906093H
€28.95
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. 8V0035398A
Audi A3 8V A-Pillar Speaker Tweeter Front Left Right N/O/S 8V0035398A
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. 4H0955557
Volkswagen VW Polo 6R 5 Audi A6 C7 Air Module Crash Impact Sensor 4H0955557
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8U0998572A
Audi Q3 8U Headlight Module LED Headlamp Control Unit 8U0998572A
€42.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A1668203426
Mercedes W166 C292 Front Seat Adjuster Module Unit Left Right N/O/S A1668203426
€42.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 5Q0937086BK-1
Volkswagen Golf Sportsvan Body Control Comfort Unit Module BCM Unit 5Q0937086BK
€80.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 3D0907539A
VW Volkswagen Phaeton 3D Dashboard Light Sun Solar Sensor Unit 3D0907539A
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9154413-1
BMW E93 LCI Convertible GPS Antenna Aerial Unit Module 9154413
€28.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 7L5919283B
Porsche Cayenne 9PA PDC Parking Sensor Control Module Unit Controller 7L5919283B
€94.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 6981142
Window Lifter Motor BMW E60 E61 Drive Actuator Front Right O/S 6981142
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8J0035456A-1
Antenna Amplifier Audi Q5 8R A6 C6 A5 8T Mobile Phone Module Unit 8J0035456A
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. 6C1T-14A120-AD
Ford Transit Mk7 Starter Motor Wiring Cable 2.2 TDCi 6C1T-14A120-AD
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9267467
BMW F13 Body Control Module Electronic Junction Box JBBFE 3 PL6 V3 9267467
€80.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 7555188-1
BMW F01 F07 GT F10 F11 F12 F13 Control Unit Box Cover Cap 7555189
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A2198202426
Mercedes CLS W219 Door Module Front Right O/S Control Unit A2198202426
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. 8P0035535
Audi A4 B7 Amplifier Bracket Aerial Antenna Module Mount Holder 8P0035535
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9287756
Loudspeaker Centre BMW F25 F15 Central Woofer Audio Speaker 9287756
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A0015454416
Mercedes CL203 M271 Automatic Gearbox EGS Control Module Unit ECU A0015454416
€37.95
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. A1645400350-1
Mercedes ML W164 Fuse Prefuse Box Jump Start Terminal A1645400350
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9145350
BMW X3 E83 LCI EWS IV 4.4 Control Unit Module ECU 9145350
€66.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A2229002109
Mercedes W205 W222 Door Module Control Unit Rear Right O/S A2229002109
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. 8H0035411D
Audi A3 8P Door Card Speaker Rear Left Right N/O/S Audio Speaker 8H0035411
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A1179005800
Mercedes W176 Airbag Belts System Control Unit Module ECU Bosch A1179005800
€85.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8K0907064JE
Audi A5 8T Body Control Comfort Unit Module BCM Convenience Unit ECU 8K0907064JE
€56.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8S0035466
Audi TT FV 8S Premium Loudspeaker System Amplifier Bang & Olufsen 8S0035466
€1,329.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9237655-2
BMW E60 E61 E81 E87 E90 F10 Audio Aux In Socket Plug 9237655
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8W0915459E
Audi A4 B9 Battery Positive Terminal Cable Plus Pole Wiring Harness 8W0915459E
€28.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8579479-2
BMW F20 F21 F30 116d 316d N47N 116HP Engine Control Unit ECU DDE 8579479 Manual
€89.95
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. 8K0907637A
Audi A5 8T Acceleration Yaw Rate Sensor Module Control Unit ECU 8K0907637A
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8W8971687M
Audi A5 F5 Sportback Door Wiring Harness Loom Rear Left N/S 8W8971687M
€47.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 5Q0962131
Antenna Control Module Audi Q3 RSQ3 F3 Line Keyless Entry 5Q0962131
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9366409
BMW F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9366409
€94.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9367350
KaFAS Camera BMW F10 F20 F30 Mini F55 F56 Front Control Unit Module ECU 9367350
€28.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 04L907309R-2
Audi A3 8V 1.6 TDI 110HP DBKA Engine ECU 04L907309R Manual
€32.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 6958446
BMW E65 E66 E67 Control Unit Door Front Passenger Side Module ECU 6958446
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A2198203526
Mercedes CLS W219 Door Module Rear Left N/S Control Unit A2198203526
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. KV6T10C679BC
Ford Transit Connect Battery Cable Negative Lead Terminal Harness KV6T10C679BC
€28.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 6942507
Mini R52 R53 Battery Cable Wiring Lead Positive Plus Pole 6942507
€94.95
Free delivery - Mon, Dec 29
If paid before 14:00
-5%
Part no. 9266838
BMW X3 F15 Can Bus Interface 120Ohm Control Module Unit ECU 9266838
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9281518
BMW F20 F21 F22 F30 Radio Professional CD Bluetooth Headunit Control 9281518
€165.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8519663-4
Mini Cooper D ALL4 R60 N47N 1.6 Diesel Engine ECU Kit DDE 8519663 CAS3 + Key
€189.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 6930302
BMW E60 E61 E63 E64 Actuator Ventilation Motor Heater Right O/S 6930302
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 6798872-1
BMW F10 F11 F30 F31 Wheel Module Tire Pressure Control RDC 433MHZ Unit 6798872
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A6394405109
Mercedes Vito W639 Wiring Harness Rear Boot Trunk Lid Tailgate Loom A6394405109
€32.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A2229001909
Mercedes W205 W222 Door Module Front Right O/S Control Unit ECU A2229001909
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A2124405933
Door Wiring Mercedes W212 Loom Cable Rear Left Right N/O/S A2124405933
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 7600076-2
Mini Cooper R55 R56 N12 1.6 120HP ECU Kit DME 7600076 + CAS3 + Key Manual
€142.95
Free delivery - Mon, Dec 29
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 - Mon, Dec 29
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 - Mon, Dec 29
If paid before 14:00
-5%
Part no. 9207416
BMW X6 E71 Map Card Fuse Box Grouping Diagram 9207416
Promo price
€23.95
€22.75
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 7574294
Mini Cooper S R56 Automatic Gearbox TCU ECU Control Unit EGS Module 7574294
€56.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8W0971687AQ
Audi A4 B9 Door Wiring Loom Harness Rear Left Right N/O/S 8W0971687AQ
€32.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A0055461240
Mercedes W169 W245 Distributor Box Front Control Unit Module A0055461240
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 6943085
BMW E60 E61 Air Module ECU Control Unit Gateway Module 6943085
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 2S6T-14A073-AC
Ford Transit Connect Fuse Box Power Distribution Junction Relay 2S6T-14A073-AC
€32.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8W1907064BC
Audi A4 B9 Body Control Module BCM Comfort Control Unit Power Supply 8W1907064BC
€104.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8494948
BMW F40 F44 F48 Mini F54 Rear Tailgate Smart Opener Top Wire Sensor 8494948
€32.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A1648209385
Mercedes ML W164 Door Module Front Left N/S Control Unit Module A1648209385
€28.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9212916
BMW 5 7 X5 E70 F01 F02 F10 F11 Rain / Light / Solar Fogging Sensor 9212916
€28.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9355462
BMW X5 F15 Bumper PDC Rear Wiring Loom Parking Sensor Cable 9355462
€113.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8617239
Gearbox Module Mini R55 R56 LCI R60 Automatic Transmission Unit EGS 8617239
€56.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 9358302
Mini 1 2 3 Series F20 F21 F30 LCI F55 F56 Compensator LTE ECE 9358302
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 8Y0035465
Audi A3 8Y A4 B9 Q5 FY Harman Speaker Amplifier Booster Sound System 8Y0035465
€47.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 09185826
Vauxhall Opel Relay Speed Signal Electrical Unit 5 Pin Siemens Orange 09185826
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. 5Q0959592B
Audi A3 8V Door Module Control Unit Front Passenger Side 5Q0959592B
€23.95
Free delivery - Mon, Dec 29
If paid before 14:00
Part no. A2215408445
Mercedes W221 Radar Distronic Adaptive Cruise Control Sensor A2215408445
€379.95
Free delivery - Mon, Dec 29
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 .