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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Part no. 8K0971178A
Audi A4 S4 B8 Mobile Phone Holder 8K0971178A
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8X0959792B
Audi A1 8X Door Module Control Unit Controller Front Passenger's Side 8X0959792B
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4N0035446
Audi A3 RS3 8V Aerial Antenna Amplifier Control Module Unit 4N0035446
£94.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P0035503M-1
Audi A6 C6 Bluetooth Antenna Module Control Unit ECU 8P0035503M
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P0919283D
Audi A3 8P PDC Parking Distance Control Sensor Module Unit ECU 8P0919283D
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8Y0971693D
Audi S3 8Y Sportback Rear Door Wiring Harness Loom Left Right N/O/S 8Y0971693D
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. MMI2G-CARPLAY-A1
Audi A1 8X Bluetooth Interface CarPlay MMI Retrofit Multimedia Unit Set MMI2G
£113.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0907566J
Audi A7 4G Sportback Lane Change Assist Control Module Rear Left N/S 4G0907566J
£113.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W6971029CR
Audi A5 F5 Front Door Wiring Harness Cable Driver's Side 8W6971029CR
£66.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0906259J
Audi A3 8V S3 2.0 TFSI DJHA 310HP Quattro Engine ECU 8V0906259J Automatic
£189.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P0953519G
Audi TT 8J A3 8P Windscreen Wiper Stalk Switch Assembly 8P0953519G
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 059903015P
Volkswagen Touareg Audi Q7 Water Cooled Alternator 190A 059903015P
£66.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G2907311C-1
Audi A7 4G8 3.0 TDI CRTE 218HP Quattro Engine ECU Kit 4G2907311C BCM2 + 2 Keys
£569.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 04L906021BH
Audi A5 8T 2.0 TDI CNHA 190HP Quattro Engine Control Unit ECU 04L906021BH Manual
£170.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0907355C
Audi Q5 8R 2.0 TDI CGLC Adblue Control Module Unit ECU 4G0907355C
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0907568J
Audi A7 4G Sportback Lane Change Assist Control Module Rear Right O/S 4G0907568J
£85.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0907064N
Audi A4 B8 A5 8T Body Control Comfort Unit Module BCM Convenience ECU 8K0907064N
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 04L907282
VW Volkswagen Audi Seat Skoda Glow Plug Relay Unit Black 511 9 Pins 04L907282
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W1959592
Audi Q5 8R Door Module Front Left N/S Control Unit ECU Controller 8W1959592
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W5035035A-1
MMI Multimedia Audi A4 B9 A5 F5 Q5 FY Navigation Control Head Unit 8W5035035A
£360.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 03L906018AJ
Audi A3 8P 2.0 TDI 170HP CFGB Engine ECU Unit Kit Key + Lock 03L906018AJ Manual
£94.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 03L906022MK-1
Audi A4 B8 2.0 TDI Diesel CAGA Engine Control Unit ECU Kit 03L906022MK Key
£189.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P0035186G
Audi A3 8P Multimedia Radio CD Player Head Unit 8P0035186G
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V4971035CB
Audi A3 8V Sportback Front Driver's Door Loom Wiring Harness 8V4971035CB
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 03L906018SK-1
Audi A4 B8 2.0 TDI CJCD 150HP Engine ECU Kit 03L906018SK Key Lock Automatic
£94.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V1035035B
Audi A3 S3 Q2 RS3 Multimedia Radio Sat Nav CD Player Head Unit 8V1035035B
£569.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4L0919614C
Audi Q7 4L Navigation MMI Multimedia Control Panel Controller 4L0919614C
£474.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V4971036Q
Audi A3 8V Sportback Front Passenger's Door Loom Wiring Harness 8V4971036H
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 06A903143P
Audi TT 8N Alternator Bracket Mount Holder 06A903143P
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0937615C
Audi A3 8V Fuse Relay Box Module Electrical Control Unit 5Q0937615C
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8Y0947355P
Audi S3 8Y Glow Box Light Control Unit LED Module 8Y0947355P
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K5907115H
Audi A4 B8 A5 8T 2.0 TFSI CDNC Quattro 211HP Engine Control Unit ECU 8K5907115H
£265.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4F0919813E
Audi A4 B8 Chip Card Reader for Road Toll ETC Japan Module Unit 4F0919813E
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 04L907309R-1
Audi A3 8V 1.6 TDI 110HP DBKA Engine ECU Kit Ignition + Key 04L907309R Manual
£142.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8R0907468C
Audi A5 8T 2.0 TDI Gateway Control Module Unit ECU 8R0907468C
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0959592F
Door Module Audi A3 8V Volkswagen Golf 7 Control ECU Front Left N/S 5Q0959592F
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4M0959792E
Audi A5 F5 Door Module Front Left N/S Control Unit Module ECU 4M0959792E
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 04L907309D-1
Audi A3 8V 2.0 TDI CRBC 150HP Engine Control Module Unit ECU 04L907309D Manual
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8T0959792K
Audi A5 S5 8T Door Module Control Unit Front Passenger Side 8T0959792K
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-8Y2971029S
Audi A3 8Y Front Door Wiring Loom Harness Cable Driver's Side 8Y2971029S
£70.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0907441A
Audi A8L 4H Rear View Backup Camera Control Unit Module 4H0907441A
£32.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 06K907425J-1
Audi S3 8V 2.0 TFSI 300HP DNUE Quattro Engine ECU Kit 06K907425J Ignition + Key
£227.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4M0959651
Front Crash Impact Audi A4 B9 A5 F5 Air Module Sensor Unit 4M0959651
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-4G2919601T
Audi A7 4G8 Dashboard MMI Multimedia Display Monitor Screen 4G2919601T
£47.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0907159
Audi A3 RS3 8V Impact Sound Actuator Body Control Unit Module ECU 8V0907159
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K5907401A-1
Audi A5 8T 3.0 TDI CDUC 245HP Diesel Engine Module ECU Kit 8K5907401A Automatic
£284.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4F9910402A
Audi A6 C6 3.0 TDI 240HP CDYA Quattro Engine Module ECU Kit 4F9910402A Automatic
£170.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0035465D
Audi A3 8V Bang & Olufsen Audio Sound Amplifier Stereo System Module 8V0035465D
£75.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0907063D
Audi A4 B8 A5 8T Body Control Comfort Unit Module BCM Unit ECU 8K0907063D
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4L0907357
Audi Q7 4L Headlight Level Range Adjustment Module Control Unit 4L0907357
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0919475R
Parking Module Audi A4 B8 A5 8T PDC Sensor Control Unit 8K0919475R
£56.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8X0959673
Audi A1 8X Windscreen Heating Control Switch 8X0959673
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 7L0614125A
Audi Q7 4L ABS Pump Bracket Brake Unit Mount Holder 7L0614125A
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0959792A
Audi A5 8T Door Control Module Front Left N/S 8K0959792A
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8P7959655
Audi A3 8P Air Module SRS System Control Sensor ECU Unit 8P7959655
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4N0035502D
Audi S3 8Y Antenna Amplifier Mobile Phone Module Unit 4N0035502D
£104.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 3Q0905861C
Audi A4 B9 A5 F5 Steering Column Lock Mechanism Control Unit 3Q0905861C
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0035035C
Audi A4 B9 Multimedia Stereo Sat Nav SD CD Player Radio Head Unit 8W0035035C
£303.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8D0951253A
Audi A6 C6 Multi Use Relay Unit Module 4 Pins 373 8D0951253A
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 05L907309
Audi A4 B9 A5 F5 30 TDI DTNB 136HP Engine Control Unit ECU 05L907309 Automatic
£237.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 8R0907468AE
Audi A5 8T 2.0 TDI Gateway Control Module Unit ECU 8R0907468AE
£80.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8Y0971036E
Audi A3 8Y Front Door Card Wiring Harness Loom Cable Passenger Side 8Y0971036E
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 03G906016HS-1
Audi A6 C6 2.0 TDI BRE 140HP Engine Control Module ECU Set 03G906016HS Manual
£94.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G8959792J
Audi A7 4G8 Door Control Module Front Passenger Side 4G8959792J
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0947355G
Audi A5 S5 F5 Door Panel LED Module Light Unit Wiring Front Right O/S 8W0947355G
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8E0959643B
Audi A4 B7 Crash Impact Airbag Sensor Unit Module 8E0959643B
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0907063N
Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907063N
£42.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-8W2919604A
Audi A4 B9 Central Information Display Screen CIC Navigation 8W2919604A
£18.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 059911022
AUDI Q5 8R Quattro 3.0 TDI Diesel CCWA CCWB Starter Motor 059911022
£32.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. RHD-4G2971228S
Audi S7 4G8 4.0 TFSI Starter Alternator Wiring Loom Cable Harness 4G2971228S
£94.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 05E907309CB-1
Audi Q2 GA 35 TFSI 1.5 DXDB 150HP Engine Control ECU 05E907309CB Automatic
£94.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8T0907560AC-1
Audi S5 8T 4.2 FSI CAUA Quattro 354HP Engine Control ECU 8T0907560AC Automatic
£303.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4L0698007C-1
Audi Q7 4L Air Suspension Level Height Adjustment Compressor Pump 4L0698007C
£227.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W6947356
Audi A5 S5 F5 Door Card Panel LED Module Light Unit Wiring Harness 8W6947356
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4F1971036A
Audi A6 C6 Front Passenger Door Wiring Left N/S Harness Loom Cable 4F1971036A
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0907159F
Audi A4 S4 B9 A5 S5 Impact Sound Actuator Control Module 8W0907159F
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 03L906019AG-1
Audi A6 C6 2.0 TDI CAHA 170HP Engine ECU Kit 03L906019AG Ignition + Key Manual
£180.95
Free delivery - Tue, Dec 02
If paid before 14:00
Part no. 8P3035223B
Audi S3 8P Audio Sound System Amplifier Bose 290328
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 059903015T
Audi Q7 4L A8 D4 Water Cooled Alternator 190A 059903015T
£56.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8X0971036AA
Audi A1 8X Front Passenger Side Door N/S Window Switch Loom Cable 8X0971036Q
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 1K0971250AD
Audi A3 Volkswagen Golf Battery Wire Cable Negative Earth Lead 1K0971250AD
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0907064EE
Audi A5 8T Body Control Module BCM Comfort Control Unit 8K0907064EE
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W0907063BG
Audi A4 B9 Body Control Comfort Unit Module BCM Unit ECU 8W0907063BG
£51.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 7L0937576B
Audi Q7 4L Fuse Box Trim Cover Panel Electrical Unit Housing 7L0937576B
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8W5907468F
Audi Q5 FY Gateway Control Module Unit ECU 8W5907468F
Product currently unavailable
Part no. 8W0907063CG
Audi Q5 FY 2.0 TFSI DAXB Petrol Supply Body Control Module Unit 8W0907063CG
£47.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0971765E
Audi A7 4G8 3.0 TDI CZVA Adblue Tank Pump Wiring Loom Harness Loom 4G0971765E
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 1K0971235J
Audi A3 Volkswagen Golf Battery Wire Cable Negative Earth Lead 1K0971235J
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 1K0907530AA
Audi A3 8P Body Gateway Module ECU Control Unit 1K0907530AA
Product currently unavailable
Part no. 4H0907601A
Audi S4 B8 Alarm Siren Body Sound Impact Actuator Speaker 4H0907601A
£28.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K0907064HG
Audi Q5 8R Body Control Module BCM Comfort Control Unit 8K0907064HG
£47.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4H0951253-1
Audi A3 8P Multi Use Control Module Relay 4 Pin Light Green Unit Set 4H0951253
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 04L907309E
Audi A1 8X 1.6 TDI CXMA 116HP Engine Control Unit ECU 04L907309E Automatic
£37.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 80C919616
Audi Q5 FY Multimedia Volume Control Button Switch Knob Head Unit 80C919616
£13.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 5Q0971230ES
Battery Cable Audi A3 8V Starter Alternator Wiring Harness 5Q0971230ES
£23.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K5907551B-1
Audi S4 B8 3.0 TFSI CGWC 333HP Quattro Engine Control Module ECU Kit 8K5907551B
£493.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8V0906259J-1
Audi S3 8V 2.0 TFSI DJHA 310HP Quattro Engine Module ECU Set 8V0906259J
£284.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 4G0035061Q
Audi Q5 8R Multimedia Radio Control Module Head Unit 4G0035061Q
£237.95
Free delivery - Mon, Dec 01
If paid before 14:00
Part no. 8K9035225
Audi RS4 B8 Radio Aerial Antenna Amplifier AM/FM 8K9035225
£13.95
Free delivery - Mon, Dec 01
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 .