What is a car electrical system?

This is a set of components responsible for powering and controlling all electrical functions in the car – from engine starting to multimedia.

What is an alternator for in a car?

The alternator generates electrical current when the engine is running and charges the battery.

What is the difference between a starter and an alternator?

The starter motor is used solely to start the engine, while the alternator is responsible for generating energy while driving.

How to check if the battery is working?

Just measure its voltage – a healthy battery should have approximately 12.6 V at rest and maintain a voltage above 10 V during cranking.

What are the most common symptoms of car electrical failure?

Problems starting the engine, flashing warning lights, power windows not working or dimming lights.

Do electrical parts from one model fit another?

Sometimes yes, but the key is to match it by VIN or OEM number – this guarantees compatibility.

How often should you check your electrical system?

It is worth performing basic diagnostics (battery, alternator) at least once a year or before a long trip.

Automotive electrical systems

At Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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Audi A3 8P Steering Wheel Position Angle Sensor Control Unit Module 1K0953549DB

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Audi A4 B7 Navigation System Car Sat Nav Computer Head Unit 8E0035192D

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Audi A5 F5 Rear Hatch Tailgate Boot Lid Control Module Unit ECU 8W8959107D

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Audi A4 B7 Rear Bumper PDC Parking Sensor Wiring Harness Loom 8E0971085A

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Audi A7 4G A6 C7 Daytime Running Lights DRL LED Headlight Module Unit 4G0907697J

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Audi A4 B7 Front Door Card Wiring Harness Loom Cable Passenger Side 8E1971029AF

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Audi Q7 4L Steering Column Lock Mechanism Control Unit Module ECU 4F0905852D

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Audi Q5 FY Top Sunroof Opener Control Module Unit ECU 4M0907594J

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Audi A4 B7 Sat Navi Stereo Radio Audio Head Unit CD Player 8E0035192T

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Audi TTRS 8J 2.5 TFSI CEPA Quattro 340HP Engine Control ECU 8J0907404 Manual

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Audi Q7 4L Steering Column Lock Mechanism Control Unit Module ECU 4F0905852B

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Audi A4 B8 A5 8T A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181

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Audi A6 C6 Q7 4L Bluetooth Telephone Control Module Unit ECU 4E0910336K

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Parking Brake Control Audi A4 B8 S5 8T Electric Brake Unit Module 8K0907801F

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Audi A6 C7 2.0 TDI SRS Air Module Control Unit Sensor ECU 4H0959655C

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Audi A5 8T Seat Cable Front Wiring Loom Harness Left Right N/O/S 8T0971365J

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Audi A1 8X 1.4 TSI CAXA 122hp ECU Engine Control Unit Automatic 03C906016DM

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Audi Q2 GA Door Module Control Unit Front Passenger Side 5Q0959592K

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Audi TT 8J Body Control Comfort Unit Module BCM Unit 8J0959433

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Audi A4 B8 BCM2 Body Comfort Module Control Unit Board Power Supply 8K0907064FE

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Audi A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181C

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Audi S5 8T Differential Control Unit Function Module 8K0907163

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Audi S5 8T Quattro 4.2 FSI Petrol V8 CAUA Alternator Genarator Valeo 079903015F

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Audi A4 B8 2.0 TDI Alternator Generator 03G903016EX

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Audi A3 8V Display Screen Sat Nav Navigation Dashboard 8V0857273F

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Audi A5 8T Display Screen Dashboard Multifunction Monitor Unit 8T0919604A

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Audi A1 8X PDC Assistance Parking Distance Control Module Unit ECU 8X0919475AE

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Audi A4 B7 Body Comfort Control BCM Supply Module Unit ECU 8E0959433CQ

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Audi A3 8V VW Golf Mk7 VII Front Radar Distance Control Unit Module 5Q0907572F

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Audi Q5 8R Front Bumper PDC Parking Sensor Wiring Harness Loom 8R0971095A

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Audi Q7 4L A1 8X Negative Battery Cable Lead Monitoring Module 8K0915181D

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Audi A4 B8 Front Door Control Module Unit ECU Passenger Side 8K0959792S

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Audi A8 D4 Diesel Engine Fuel Pump Control Unit Module 12V 4H0906093G

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Audi A5 F5 Power Distribution Relay Fuse Box Battery 8W0941823

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Audi A5 8T PDC Parking Distance Control Module Unit Valeo 8K0919475T

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Gateway Module Audi A3 8P Volkswagen Golf Mk6 Control Unit ECU 1K0907530AF

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Audi TT Mk3 8S 2.0 TDI CUNA 184HP Engine Control Unit ECU 04L907309A Manual

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Audi A5 8T 3.0 TDI CCWA 240HP Quattro Engine ECU Kit Ignition + 2 Key 8R0907401J

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Audi A3 8V Front Bumper Crash Impact Sensor Wiring Harness Loom Cable 8V0971085G

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Audi S3 8P Interface Bluetooth Control Module Harman Becker ECU 8P0862335S

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Audi TT 8N Battery Fuse Box Power Distribution 8N0937550A

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Audi A1 8X Volkswagen Polo GTI 6C Battery Positive Terminal Jump Cover 6C0915441

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Audi Universal SD Card Map Pilot Navigation Europe 2016 8X0919884J

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Audi Q3 8U 2.0 TDI CFGC 177HP Quattro Engine Control Unit ECU 03L906018PH

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Audi TT 8J 2.0 TFSI Petrol Fuel Injectors Wiring Harness 06F971082F

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Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023

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Audi Q5 8R A5 8T Sat Navi Stereo Radio Audio MMI Head Unit CD Player 8T2035666A

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Gateway Control Skoda Seat Volkswagen Audi TT 8J Unit Module 7N0907530AG

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Audi Q5 8R Door Module Control Unit Front Passenger Side 8K0959792R

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Audi TT 8J Driver's Side Door Wiring Harness Loom 8J0971029AD

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Audi TT 8J Front Left N/S Door Wiring Harness Cable Lom 8J0971030AE 8J0971030AB

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Audi A3 8V Door Module Control Unit Front Driver's Side 5Q0959593A

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Audi A4 S4 B9 Boot Trunk Subwoofer Rear Bass Speaker Audio Unit 8W9035382B

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Audi Q5 8R Battery Earth Negative Terminal Cable Lead 80A915181A

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Audi A6 C7 BCM Body Control Module Unit ECU 4H0907063GH

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Audi Q5 FY Body Control Unit Module BCM2 On-board Power Supply 4N0907064AH

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Audi A4 B7 PDC Parking Distance Sensor Control Unit Module Front Rear 8E0919283E

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Audi A3 8V Dashboard Sat Nav Drive Unit Multimedia Infortaiment 8V0035020J

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Navigation SD Card Map Audi A6 C7 A7 4G A1 8X Pilot Europa 2022 8X0060884Q

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Audi A6 C7 BCM Body Comfort Convenience Module Unit ECU 4H0907064DN

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Audi A3 8P Battery Box Tray Housing Holder Bracket Cover Mount 1K0915333

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Part no. 5Q0937084DG

Audi S3 8V BCM Body Control Module Unit ECU 5Q0937084DG

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Part no. 8W0035736

Audi A4 B9 Connector AUX USB Adapter Port Socket 8W0035736

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Audi RS4 B8 Body Control Unit Module ECU BCM 8K0907063DJ

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Audi A4 B8 Becker K-Box Radio Receiver Module Control Unit ECU 4F0035541N

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Audi A5 8T Body Control Comfort Unit Module BCM Convenience Unit ECU 8K0907064CQ

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Audi A3 8P Door Wiring Front Right O/S Harness Loom Cable 8P4971029E

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Audi A4 B8 A5 S5 8T Door Module Control Unit Front Left N/S 8K0959793D

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Audi A4 B8 Rear Wiring Loom PDC Harness Parking Sensor 8K0971104F

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Audi A3 8V 2.0 TDI DFGA 150HP Engine Control Unit ECU 04L907309P Automatic

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Audi A3 RS3 8V Body Control Module BCM Control Unit ECU Power Supply 5Q0937084DC

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Audi A6 C6 Parking Brake Handbrake Module Control Unit 4F0907801A

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Audi A3 8V Microphone Cable Wiring Loom Cable Harness 8X2035711C

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Audi Q3 F3 Keyless Entry Amplifier Control Box Module Aerial Antenna 5K0962132A

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Audi A6 C6 Rear Door Wiring Left Right N/O/S Harness Loom Cable 4F1971693D

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Audi A4 B7 2.0 TDI Starter Motor Engine Diesel 03G911023A

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Audi A3 8P Front Door Wiring Right O/S Harness Loom Cable 8P4971030F

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Audi Q2 GA 35 TDI DTTC 150HP Quattro Engine ECU Kit 05L907309B Ignition + Key

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Audi A1 8X Stereo Sat Navi Navigation Radio Head Unit 8XA035192F

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Comfort Unit Audi A4 S4 B8 Q5 8R Central Control Module BCM Unit ECU 8K0907064GH

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Audi RS6 C7 Air Condition A/C Climate Control Module Unit 4G0919158M

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Audi Q5 8R Engine Noise Control Module Unit ECU 8R0907160

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Part no. 7P0915181C

Audi A1 8X HV Battery Cable Loom Harness Wiring Negative Terminal 7P0915181C

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Audi A4 S4 B8 Q5 8R Front Right Door O/S Control Unit Module ECU 8K0959792P

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Audi Q5 R8 3.0 TDI CGQB Seat Heater Control Module Unit 8R0907333

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Audi A4 S4 B8 Q5 8R Front Left Door N/S Control Unit Module ECU 8K0959793P

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Audi A4 B9 Door Module Rear Left Right N/O/S Control Unit Module ECU 4M0959795N

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Part no. 5Q0937125A

Fuse Relay Box Volkswagen Audi Skoda Seat Engine Bay Supply Unit 5Q0937125A

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Part no. 8S0971029C

Audi TT FV Front Driver Side Door Wiring Loom Harness 8S0971029C

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Part no. 83A823531

Audi Q3 F3 Front Bonnet Hood Center Lock Bowden Cable 83A823531

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Audi A3 8P Air Bag Module Control Unit ECU SRS Module Unit 8K0959655S

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Audi A5 8T 3.0 TDI CLAB 204HP Engine ECU Kit Ignition + Key 8K5907311 Automatic

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Audi A3 S3 RS3 8Y Light LED Module Control Unit 8Y0947355H

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