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
-5%
Part no. 6918567
BMW 7 Series E65 E66 E67 Seat Control Unit Module Heating 6918567
Promo price
PLN 46.95
PLN 44.60
Delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A0009003310
Mercedes W205 W213 Fuel Pump Module Control Unit ECU A0009003310
Promo price
PLN 94.95
PLN 90.20
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 8Y0963554A
Audi S3 8Y Rear Seat Couch Occupancy Recognition Sensor Unit 8Y0963554A
Promo price
PLN 66.95
PLN 63.60
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 9244426
BMW X5 E70 Rear Bumper PDC Cables Wiring Loom Set 9219647
Promo price
PLN 218.95
PLN 197.06
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 1K0906093F
Fuel Pump Control Audi A3 8P VW Golf Mk6 Relay Module Unit ECU 12V 1K0906093F
Promo price
PLN 42.95
PLN 40.80
Delivery - Thu, Dec 18
If paid before 14:00
Part no. 95B907637E
Porsche Macan 95B Acceleration ESP Yaw Sensor Module Control Unit 95B907637E
PLN 123.95
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 4G2971228DQ
Audi A6 A7 4G 3.0 TDI Starter Alternator Wiring Harness 4G2971228DQ
Promo price
PLN 113.95
PLN 102.56
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 6924389
BMW Z4 Series E85 E86 Battery Positive Cable Fuse Box B Base 6924389
Promo price
PLN 93.95
PLN 89.25
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 9231280-TS
BMW F07 Parking Module PDC Distance Control Unit Sensor Titan Silver - 354
Promo price
PLN 94.95
PLN 85.46
Free delivery - Thu, Dec 18
If paid before 14:00
-100%
Part no. 8R0907468AE
Audi A5 8T 2.0 TDI Gateway Control Module Unit ECU 8R0907468AE
Promo price
PLN 432.95
-PLN 0.04
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 9128602
Cables Wiring BMW E81 E87 LCI Front Bumper PDC Loom Set 9128602
Promo price
PLN 123.95
PLN 111.56
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 1421295
Mini EGS Control Unit Module ECU Programmed 5 Pins 1421295
Promo price
PLN 47.95
PLN 43.16
Delivery - Thu, Dec 18
If paid before 14:00
Part no. 9325537
BMW 5 Series F10 Electric Parking Brake Module Cable Wiring Loom 9325537
PLN 94.95
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 8573260-8
BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8573260 + Key + FEM Manual
Promo price
PLN 1,709.95
PLN 1,196.97
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 8W0419065D
Audi A4 B9 A5 F5 Power Steering Column Control Unit Module 8W0419065D
Promo price
PLN 142.95
PLN 100.07
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A2118705726
Air Module Mercedes W211 C219 Air System Control Unit ECU A2118705726
Promo price
PLN 61.95
PLN 58.85
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 8685853
BMW F40 X1 F48 Mini F55 F56 F60 Engine Injector Wiring Loom Harness 8685853
Promo price
PLN 284.95
PLN 199.47
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 9395949-1
Radio Player Mini F54 F55 F56 Stereo Head Unit Module Alpine 9395949
Promo price
PLN 474.95
PLN 332.47
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A0009004839
Mercedes C118 W177 C247 Battery Control Module Unit ECU A0009004839
PLN 1,519.95
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 9315685
BMW 1 2 3 4 Series F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9315685
Promo price
PLN 170.95
PLN 153.86
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. A0009002740
Camera Module Mercedes C205 W247 GLC X253 W910 Control Unit A0009002740
Promo price
PLN 1,424.95
PLN 997.47
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A0009062103
Mercedes W205 Alternator Generator Petrol Engine Valeo 150A 14V A0009062103
PLN 474.95
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 9257093
Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9257093
Promo price
PLN 1,423.95
PLN 1,281.56
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A2118705526
Mercedes W219 Motorola Telephone Control Module DC UHI MOST A2118705526
Promo price
PLN 42.95
PLN 40.80
Delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 8W0959592E
Audi A4 B9 Front Door Control Module Unit Passenger Side ECU 8W0959592E
Promo price
PLN 180.95
PLN 126.67
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 8T0959795F
Audi A5 8F Window Lifter Module Control Unit Rear Left Right N/O/S 8T0959795F
Promo price
PLN 42.95
PLN 40.80
Delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A2075403434
PDC Wiring Mercedes W204 W207 Parktronic Parking Sensor Cable Rear A2075403434
Promo price
PLN 75.95
PLN 72.15
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. A0005454516
Mercedes W204 Automatic Gearbox EGS Control Module Unit ECU A0005454516
Promo price
PLN 132.95
PLN 119.66
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. A6401500734
Mercedes W169 W245 A200 B200 CDI OM640.941 140HP Engine Module ECU A6401500734
Promo price
PLN 474.95
PLN 332.47
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. A1725400433
Electric Wire Mercedes SLK R172 M271 Alternator Prefuse Box Wiring A1725400433
Promo price
PLN 93.95
PLN 84.56
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 9229880
BMW E88 Cabrio ECU Body Control Module H3 Junction Box 9229880
Promo price
PLN 189.95
PLN 132.97
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 7188557
BMW F10 S63N Control Unit Fuel Pump 7188557
PLN 1,424.95
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A2129000004
SAM Module Mercedes W212 Fuse Box Relay Control Unit A2129000004
Promo price
PLN 42.95
PLN 40.80
Delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. A2319003706
Mercedes R231 Control Unit Module Passenger Seat A2319003706
Promo price
PLN 522.95
PLN 366.07
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A2129001227
Gateway Control Unit Mercedes W204 W212 Gateway Module ECU VST A2129001227
Promo price
PLN 42.95
PLN 40.80
Delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 390203254
Seat Adjustment Motor Mercedes R171 W221 Front Seat Motor Actuator 0390203254
Promo price
PLN 56.95
PLN 54.10
Delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 9142398
Mini Cooper R55 R56 Cable Wiring Set HiFi Driver's Side 9142398
Promo price
PLN 113.95
PLN 102.56
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 9247081
BMW X1 E84 Wiring Loom Harness Passenger Side 9247081
Promo price
PLN 94.95
PLN 90.20
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 8519663-1
Mini Cooper SD R56 LCI N47N 143HP Diesel Engine ECU Kit DDE 8519663 CAS 3 Key
Promo price
PLN 379.95
PLN 265.97
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 8E0057185KX
Audi A4 B7 Radio Media Player Audio CD Head Unit Player Concert 8E0057185KX
Promo price
PLN 237.95
PLN 166.57
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 7807802-1
BMW X5 E70 LCI X6 E71 N57 N57S Cable Alternator Starter Base B Wiring 7807802
Promo price
PLN 85.95
PLN 81.65
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A2229001909
Mercedes W205 W222 Door Module Front Right O/S Control Unit ECU A2229001909
Promo price
PLN 85.95
PLN 81.65
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 7638003
BMW F20 F21 F22 F23 F34 LCI F22 F30 F36 Starter Ground Cable 7638003
PLN 94.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 8516753-1
BMW F01 730d F07 530d N57 245HP Engine Unit ECU Kit DDE 8516753 Automatic
PLN 759.95
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 8510591-3
BMW E81 E87 E90 LCI 120d 320d N47 ECU Kit DDE 8510591 CAS3 + Key Automatic
Promo price
PLN 949.95
PLN 664.97
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A2168204726
Mercedes W221 Bluetooth Control Module Mobile Phone Interface A2168204726
Promo price
PLN 75.95
PLN 72.15
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 9196936
BMW 1 3 Series E87 E90 E91 E92 Seat Control Unit Module ECU 6926371
Promo price
PLN 66.95
PLN 63.60
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 9228914
Radio CD Player BMW F10 F11 F13 Navigation ECE Sat Nav Head Unit 9228914
Promo price
PLN 949.95
PLN 664.97
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 8V0857273P-1
Audi A3 8V Multimedia Display Screen Radio Sat Nav Head Unit 8V0857273P
PLN 284.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 8576333
BMW F20 F30 F32 120d 320d 420d N47N 184HP Engine Unit ECU DDE 8576333 Automatic
PLN 427.95
Free delivery - Thu, Dec 18
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
PLN 237.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 1508931-1
Mini Cooper S R53 Positive Battery Cable Plus Pole Wiring Loom Harness 1508931
PLN 332.95
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 8581370-1
BMW F40 Mini Cooper F56 F57 F60 Bracket Control Unit Box Engine 8581370
Promo price
PLN 61.95
PLN 58.85
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 9244422
BMW X5 E70 LCI Front Bumper PDC Loom Cables Wiring Set 9244422
Promo price
PLN 189.95
PLN 170.96
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 9267535
BMW X3 F25 Body Control Module ECU Junction Box JBBFE III 3 V9 Lear 9267535
Promo price
PLN 113.95
PLN 102.56
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 8K0959793Q
Audi A4 B8 Door Module Control Unit ECU Front Driver's Side 8K0959793Q
Promo price
PLN 75.95
PLN 68.36
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 8518569
BMW F20 F21 F30 F31 N47N 116d 316d ECU Control Unit Module DDE 8518569 Manual
Promo price
PLN 237.95
PLN 166.57
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. A0045425218
Mercedes W221 Blind Spot Radar Sensor Module Control Unit A0045425218
Promo price
PLN 949.95
PLN 854.96
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. A2059004521
Door Module Mercedes W205 GLC C253 Rear Left N/S Control Unit ECU A2059004521
Promo price
PLN 47.95
PLN 43.16
Delivery - Thu, Dec 18
If paid before 14:00
Part no. 7L5035738
Porsche Cayenne 9PA Rear Door Treble Speaker Audio Unit Right O/S 7E0035411B
PLN 42.95
Delivery - Thu, Dec 18
If paid before 14:00
Part no. 2Q0971537AB
VW Polo Mk6 Seat Ibiza Mk5 KJ1 Battery Negative Cable Earth Wiring 2Q0971537AB
PLN 94.95
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 6887753
BMW F20 F21 F22 F30 F31 F32 ICM Control Unit Module ECU 6868599
Promo price
PLN 284.95
PLN 256.46
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 9389657
BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9389657
Promo price
PLN 94.95
PLN 90.20
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 9244189
BMW F20 F21 F30 F31 Telematics Module Bluetooth Combox Telematik ECU 9244189
Promo price
PLN 75.95
PLN 72.15
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A2048709289
Mercedes W204 Right O/S Antenna Amplifier Filter Module A2048709289
Promo price
PLN 61.95
PLN 58.85
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A0009828523
Mercedes W164 Suspension Compressor Relay A0009828523
PLN 42.95
Delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A1698209126
Door Module Mercedes W169 W245 Rear Left N/S Control Unit A1698209126
Promo price
PLN 47.95
PLN 45.55
Delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 9301308
BMW F20 F21 F22 F30 Control Unit Air Conditioning System 9301308
Promo price
PLN 42.95
PLN 40.80
Delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 8J0907159B
Audi TT 8J Alarm Signal Body Sound Impact Control Module Unit 8J0907159B
Promo price
PLN 42.95
PLN 40.80
Delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 8617239
Gearbox Module Mini R55 R56 LCI R60 Automatic Transmission Unit EGS 8617239
Promo price
PLN 275.95
PLN 193.17
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 03L906018LB
Audi A6 C7 2.0 TDI CGLC 177HP Engine Control Unit ECU 03L906018LA Automatic
Promo price
PLN 284.95
PLN 199.47
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 8K0971104C
Audi A4 B8 Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104C
Promo price
PLN 42.95
PLN 40.80
Delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 9329339
BMW F32 Telematics Telephone Control Unit Module Bluetooth TCB ECE 9329339
Promo price
PLN 75.95
PLN 72.15
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. A2709002100-1
Mercedes W176 W246 A180 B180 BlueEFFICIENCY 270.910 122HP Engine ECU A2709002100
Promo price
PLN 1,424.95
PLN 1,282.46
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 3456911
Mini Cooper R57 PL3 SPEG H4 Fuse Distribution Box 3456911
Promo price
PLN 712.95
PLN 499.07
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 7609656-3
BMW Z4 E89 Roadster 23i N52N 204HP ECU Kit DME 7609656 CAS3 Key Manual
PLN 1,424.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A6549061400
Starter Motor Mercedes W213 S213 W238 OM654 Diesel Engine Actuator A6549061400
PLN 189.95
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A1645400624
Mercedes W164 Fuse Box Relay Housing Cover A1645400624
Promo price
PLN 75.95
PLN 72.15
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 9866980
BMW F20 Body Control Unit Module REM Fuse Box 9866980
Promo price
PLN 123.95
PLN 111.56
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. A1695406945
Mercedes SLK R171 Gateway Control Unit Gateway Module ECU A1715405145
Promo price
PLN 142.95
PLN 128.66
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A0025428819-1
Mercedes W176 W246 Relay Current 4 Pin 12V Hella A0025428819 Set x2
Promo price
PLN 42.95
PLN 40.80
Delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 7410612
BMW F34 GT Tailgate Lift Module Rear Boot Trunk Lid Control Unit ECU F005V01708
Promo price
PLN 170.95
PLN 153.86
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 5Q0959595B
Audi A3 8V Rear Door Control Module Unit ECU Left Right N/O/S 5Q0959595B
Promo price
PLN 61.95
PLN 58.85
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 9124585-SED
BMW E87 E90 PDC Parking Sensors Ultrasonic Set x2 Sedonarot - A79 9124585
PLN 61.95
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 4G0035083
Stereo DAB Radio Audi A4 B8 Q5 8R CD Player Radio Receiver Head Unit 4G0035083
Promo price
PLN 569.95
PLN 398.97
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A2118703485
Mercedes W211 Door Module Rear Right O/S Control Unit ECU A2118703485
Promo price
PLN 47.95
PLN 45.55
Delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. A1775455100
Mercedes W177 AMG Antenna Amplifier Control Unit Module A1775455100
Promo price
PLN 142.95
PLN 128.66
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 8C1T18K931AD
Ford Transit Mk7 V Radio CD Multimedia Player Head Unit ECU 8C1T-18K931-AD
Promo price
PLN 1,519.95
PLN 1,367.96
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 282754515R
Smart Fortwo C453 Comfort Module Control Unit ECU 282754515R
PLN 94.95
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. 8W0971687BR
Audi A4 B9 Rear Right O/S Door Wiring Loom Harness 8W0971687BR
Promo price
PLN 189.95
PLN 170.96
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 9288770
BMW F20 F21 F22 Mid Range Sound Speaker Stereo HiFi 9288770
Promo price
PLN 42.95
PLN 40.80
Delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A2761509875
Mercedes W213 W222 A238 M276 Starter Screening Plate Shield A2761509875
Promo price
PLN 61.95
PLN 58.85
Free delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. 9381104
FEM Module BMW F20 F21 F22 F30 F32 ECU Control Unit Fuse Box 9381104
Promo price
PLN 427.95
PLN 299.57
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. A6519007500-17
Mercedes C207 E220 CDI OM651.911 BE Engine Unit Module ECU A6519007500 Automatic
Promo price
PLN 118.95
PLN 107.06
Free delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. 7618644
BMW Z4 Series E89 Roadster Petrol N20 Cable Alternator-Starter-Base B 7618644
Promo price
PLN 47.95
PLN 45.55
Delivery - Thu, Dec 18
If paid before 14:00
-5%
Part no. A2139003617
Telematics Module Mercedes W176 W207 W205 Bluetooth Control Unit A2139003617
Promo price
PLN 61.95
PLN 58.85
Free delivery - Thu, Dec 18
If paid before 14:00
-10%
Part no. A2661503133
Engine Wiring Mercedes W169 W245 M266 Petrol Cable Loom Harness A2661503133
Promo price
PLN 474.95
PLN 427.46
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 9270034
MINI Cooper One F55 F56 F57 Rear Antenna Aerial Amplifier DAB 9270034
PLN 47.95
Delivery - Thu, Dec 18
If paid before 14:00
-30%
Part no. A2049060305-1
Mercedes W204 SAM Module Control Unit Rear A2049060305
Promo price
PLN 284.95
PLN 199.47
Free delivery - Thu, Dec 18
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 .