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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Products in promotion

Part no. A9079000304

Mercedes Sprinter W907 W910 Air Module Sensor Unit ECU A9079000304

€66.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 6782372

BMW X1 X3 Z4 E83 LCI E84 E89 E90 E91 E92 Speed Sensor Cluster 6782372

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8510221-1

BMW E90 E91 LCI E92 325d Diesel N57 204HP ECU Engine Kit DDE 8510221 CAS3 + Key

€132.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9224588

BMW E81 Footwell Light Module Control Unit ECU BASIS PL2 FRM3R 9224588

€161.95

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If paid before 14:00

Part no. 6934011

BMW 7 Series E65 E66 Cable Harness Loom Front Door Wiring Left N/S 6934010

€32.95

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Part no. 8796289

BMW X3 G01 X4 G02 X5 G05 Battery Terminal Negative Cable Wire Wiring 8796289

€28.95

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Part no. A1695406945

Mercedes SLK R171 Gateway Control Unit Gateway Module ECU A1715405145

€32.95

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Part no. 6900583-1

BMW 7 Series E65 E66 Cable Wire Power Distribution Box 6900583

€23.95

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BMW X4 F26 Harness Wiring Cable Loom 7678321 767832-113

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Part no. 7678321

BMW X4 F26 Harness Wiring Cable Loom 7678321 767832-113

Promo price

€23.95

€22.75

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Part no. A2049060305-1

Mercedes W204 SAM Module Control Unit Rear A2049060305

€80.95

Free delivery - Tue, Dec 23

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Part no. 7799146

Mini R55 R56 Alternator Supporting Bracket Mount Generator Diesel W16 7799146

€23.95

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Part no. 9380322

BMW F01 F02 F03 F10 F11 F13 Central Gateway Control Lear Module Unit ECU 9380322

€47.95

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Part no. 6814609

BMW 1 3 5 Series F10 F20 F30 Bus Interface Connector Data Terminating 6814609

€23.95

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Part no. 8Y0035282

Audi A3 S3 RS3 8Y Online Service Bluetooth Control Module Unit 8Y0035282

€208.95

Free delivery - Tue, Dec 23

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Audi Q3 8U Gateway Control Module Unit ECU 8U0907468AQ

-5%

Part no. 8U0907468BA

Audi Q3 8U Gateway Control Module Unit ECU 8U0907468AQ

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€23.95

€22.75

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Battery Wiring Mercedes X253 Diesel OM651 Alternator Harness Cable A2055406921

-5%

Part no. A2055406921

Battery Wiring Mercedes X253 Diesel OM651 Alternator Harness Cable A2055406921

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2114406209

Mercedes W211 OM646 Battery Cable Starter Alternator Wiring Harness A2114406209

€51.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 5QA919294C

Audi Seat Skoda Volkswagen PDC Parking Sensor Control Unit Module 5QA919294J

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 5A44586

BMW F40 Ultrasonic Alarm System Module Control Unit 5A44586

€66.95

Free delivery - Tue, Dec 23

If paid before 14:00

Mercedes Sprinter W907 Ground Line Battery Earth Cable Wire A9075406849

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Part no. A9075406849

Mercedes Sprinter W907 Ground Line Battery Earth Cable Wire A9075406849

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€23.95

€22.75

Free delivery - Tue, Dec 23

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Part no. 5WA971794R

VW Golf 8 1.5 eTSI HV Battery Positive Terminal Harness Cable Wiring 5WA971794R

€28.95

Free delivery - Tue, Dec 23

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Part no. 7552176-8

BMW Z4 E85 2.0i N46 150HP Engine Control Unit ECU DME 7552176 Manual Gearbox

€170.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2038219751-1

Mercedes-Benz C-Class W203 Alarm Sensor Module Unit A2038219751

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Volkswagen Golf 5G Radio Antenna Noise Signal Disturbance Suppressor 5Q0035570

-5%

Part no. 5Q0035570-1

Volkswagen Golf 5G Radio Antenna Noise Signal Disturbance Suppressor 5Q0035570

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€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9381020

BMW F33 F83 M4 Convertible Folding Top Roof ECU Module Control Unit CTM 9381020

€89.95

Free delivery - Tue, Dec 23

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Part no. 80A941823A

Audi Q5 FY Positive Battery Terminal Potential Distributor 80A941823A

€56.95

Free delivery - Tue, Dec 23

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Part no. 8580165

Mini F54 F55 F56 F57 F60 B47 Wiring Harness Engine Glow Plug Module 8580165

€28.95

Free delivery - Tue, Dec 23

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Part no. A2045400150

Mercedes-Benz C E Class W204 W207 Fuse Distribution Box Interior A2045400150

€32.95

Free delivery - Tue, Dec 23

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Part no. 7607973

BMW F20 F21 F30 Wiring Loom Harness Injection Valve Ignition 7607973

€23.95

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Part no. 6943285

BMW E65 Xenon Headlight Control Module LM E6X LWR 6943285

€51.95

Free delivery - Tue, Dec 23

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Part no. A2479003216

Mercedes C118 W247 Head Unit Radio Sat Nav Navigation Control Unit A2479003216

€474.95

Free delivery - Tue, Dec 23

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Part no. 9116801

Hands Free Module BMW E60 E90 Everest Motorola Non GPS Phone 9116801

€28.95

Free delivery - Tue, Dec 23

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Part no. 8P4971693AB

Audi A3 8P Door Wiring Harness Loom Cabling Rear Left Right N/O/S 8P4971693AB

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8517874-6

BMW F20 F21 116d N47N 116HP ECU Kit DDE 8517874 + Key + FEM + Lock Manual

€218.95

Free delivery - Tue, Dec 23

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Part no. 6805893

Mini F60 Countryman Door Wiring Harness Rear Left Right N/O/S 6805893

€37.95

Free delivery - Tue, Dec 23

If paid before 14:00

Audi A1 8X Q3 8U Central Gateway Control Unit Module Relay ECU 8U0907468AC

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Part no. 8U0907468AC

Audi A1 8X Q3 8U Central Gateway Control Unit Module Relay ECU 8U0907468AC

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€23.95

€22.75

Free delivery - Tue, Dec 23

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Part no. 8E0959433CA

Audi A4 B7 Body Comfort Control BCM Supply Module Unit ECU 8E0959433CA

€75.95

Free delivery - Tue, Dec 23

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Part no. A2229009211-1

Mercedes W207 W212 Tuner Box Digital Satellite Radio Control Unit A2229009211

€66.95

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Part no. A6395406809

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406809

€23.95

Free delivery - Tue, Dec 23

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Part no. 4H0937517

Audi A8L 4H Fuse Relay Battery Junction Box Housing 4H0937517

€66.95

Free delivery - Tue, Dec 23

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Part no. 7604347

BMW F20 F30 F31 F32 Bracket Holder Power Distribution Control Unit 7604347

€23.95

Free delivery - Tue, Dec 23

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Part no. 7545877

Battery Cable BMW E60 E61 E63 E64 N62N Alternator Starter Base B+ Lead 7545877

€37.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. NTG-SCREEN

Mercedes W212 Display Screen Radio Multimedia Navigation Sat Unit NTG4 4+64 GB

€237.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9338298

BMW F20 F21 F30 F33 KAFAS 2 Camera Lane Assist Module Control Unit ECU 9338298

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2055451500

Power Connection Mercedes W205 W213 C238 X253 Battery Starter Alternator Wiring

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A6421509478-3

Mercedes W164 ML320 OM642.940 224 HP 4Matic Engine ECU Kit A6421509478 Automatic

€279.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2044404732

Mercedes W204 Estate PDC Wiring Rear Bumper Parking Sensor Cable A2044404732

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 06E971627M

Fuel Injector Wiring Audi S4 B8 A6 A7 C7 4G 3.0 V6 TFSI Wiring Cable 06E971627M

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8E0907637

Audi A4 B7 YAW Sensor ESP Rotation Rate Acceleration Control Unit 8E0907637

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

Telematics Module Mercedes W176 W205 W218 Communication Control Unit A2059008218

-5%

Part no. A2059008218

Telematics Module Mercedes W176 W205 W218 Communication Control Unit A2059008218

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

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Part no. A2129009622

Mercedes W212 Fuse Box Relay Rear SAM Control Unit Module A2129009622

€51.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2059008204

Mercedes W205 SAM Module Fuse Box Relay Control Unit A2059008204

€89.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9227181

BMW E90 LCI Body Control Module H1 PL2RR JBBFE IIIR 61359227181 9227181

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9118101

BMW 1 Series E81 E82 Driver Side Offside O/S Door Wiring Loom Harness 9118101

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 99650415100

Porsche Boxster 986 Battery Tray Lower Covering Panel Cap 99650415100

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 5Q4959393E

Skoda Octavia 5E Front Door Module Control Unit ECU Driver's Side 5Q4959392E

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 3D0972072AG

VW Phaeton 3D Electrical Steering Column Wiring Harness Loom Cable 3D0972072AG

€56.95

Free delivery - Tue, Dec 23

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Part no. 8S0959121

Audi TT FV 8S Crash Impact Sensor Pedestrian Protection Module Front 8S0959121

€75.95

Free delivery - Tue, Dec 23

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Part no. 7L5907530D

Porsche Cayenne 9PA Body Gateway Module ECU Control Unit 7L5907530D

€66.95

Free delivery - Tue, Dec 23

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Part no. 3Q0907530Q

Volkswagen VW Golf Mk7 Gateway Control Unit Module ECU GW MQB High 3Q0907530Q

€23.95

Free delivery - Tue, Dec 23

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Part no. A6519007500-7

Mercedes A207 C207 E220 CDI 651.911 BE Engine ECU Kit Ignition + Key A6519007500

€142.95

Free delivery - Tue, Dec 23

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Part no. 9322690

BMW F32 F82 M4 Hifi Audio Sound System Speaker AMP Amplifier Module 9322690

€156.95

Free delivery - Tue, Dec 23

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Part no. 7857786

BMW F09 F10 F12 F13 Differential Locking Module Control Unit ECU 7857786

€42.95

Free delivery - Tue, Dec 23

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Audi A5 8T Rear Door Module Control Unit Module ECU Left Right N/O/S 8T0959795J

-5%

Part no. 8T0959795J

Audi A5 8T Rear Door Module Control Unit Module ECU Left Right N/O/S 8T0959795J

Promo price

€23.95

€22.75

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Part no. 9284282

BMW F10 Body Control Module ECU Junction Box PL6 JBBFE III V2 9284282

€23.95

Free delivery - Tue, Dec 23

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Part no. 9483099

Mini Cooper One F55 F56 F57 Parking Assistant Control Unit Module 9483099

€61.95

Free delivery - Tue, Dec 23

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Part no. 8671504-1

Starter BMW G20 G21 G30 G32GT G01 G05 Starter Motor Valeo 8671504

€56.95

Free delivery - Tue, Dec 23

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Part no. A2059001722

Computer Mercedes W205 X253 W447 Navigation Radio Player Head Unit A2059001722

€203.95

Free delivery - Tue, Dec 23

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Part no. A1179009101

Mercedes-Benz A-Class W176 CLA C117 Rear View Camera Control Module Unit ECU

€32.95

Free delivery - Tue, Dec 23

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Part no. A2469003014

Mercedes W176 W231 W246 Electric Parking Brake Control Unit Module A2469003014

€23.95

Free delivery - Tue, Dec 23

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Part no. 9250458

BMW X3 F25 Footwell Light Module Control Unit ECU FRM3 9250458

€56.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2439000800

Drivetrain Module Mercedes H243 Transmission Control Unit ECU A2439000800

€161.95

Free delivery - Tue, Dec 23

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Part no. 6906914

BMW X5 E53 Battery Cable Negative Wire 6919976

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2139001722

Mercedes W213 W907 Transmission Gearbox Control Unit Module ECU A2139001722

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 6953424-2

BMW Z4 Series 2 E85 E86 Positive Battery Cable Plus Pole Lead 6953424

€37.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8678968

Engine Wiring Mini F56 F60 BMW F45 F46 Petrol Sensor Module 1 Harness 8678968

€189.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8617707

BMW Mini Cooper F55 F56 Wiring Harness Engine Supply Module Cable Loom 8617707

€23.95

Free delivery - Tue, Dec 23

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Part no. 6974631

BMW Z4 Z3 Series E36 E85 Module Radar Burglar Alarm Sensor

€23.95

Free delivery - Tue, Dec 23

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Part no. A2034400033-2

Mercedes CLC CL203 Wiring Loom Cable Door Front Left Right N/O/S A2034400033

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8E0910115K

Audi A4 B7 2.0 TFSI BWE 200HP Engine Control ECU 8E0910115K Manual

€66.95

Free delivery - Tue, Dec 23

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 23

If paid before 14:00

Part no. A6395406509

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406509

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A1698207526

Mercedes-Benz A B Class W169 W245 Door Control Unit Left N/S Rear A1698207526

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 4H0035061J

Audi A8L 4H Head Unit Radio CD Player Navigation GPS 4H0035061J

€398.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2129001829

Mercedes C207 W212 Front Right Door O/S Control Unit Module A2129001829

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9267205-1

BMW E87 LCI ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9267205

€23.95

Free delivery - Tue, Dec 23

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Mercedes SLK R172 Roadster Antenna Amplifier Control Module A2/71 A2319058100

-5%

Part no. A2319058100

Mercedes SLK R172 Roadster Antenna Amplifier Control Module A2/71 A2319058100

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8506373-1

BMW X3 E83 LCI 1.8d N47 Engine Control Unit ECU Kit Module DDE 8506373 EWS Key

€284.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A1718701410

Mercedes SLK R171 Alarm Anti Theft System Control Module Unit Roof A1718701410

€94.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9177773

BMW F01 F07 F10 F11 Battery Power B+ Distribution Box Rear 9177773

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9290621

BMW F33 F83 M4 Convertible Top Phone Antenna Aerial Module CTM Unit 9290621

€23.95

Free delivery - Tue, Dec 23

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Part no. 9128982

BMW F20 F30 F31 LCI Mini F55 F56 Compensator LTE UK Control Unit Module 9128982

€28.95

Free delivery - Tue, Dec 23

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Part no. 6980177

BMW X1 X3 X5 X6 Z4 Z8 Relay Changeover Function Green 6980177

€23.95

Free delivery - Tue, Dec 23

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Part no. 8635811-1

BMW F20 F30 LCI 118i 318i B38 Engine Wiring Loom Harness Cables 8635811

€89.95

Free delivery - Tue, Dec 23

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Part no. A2469050201

Mercedes C117 X156 Antenna Amplifier Control Unit Module A2469050201

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

Mercedes W169 W245 Door Control Unit Left N/S Rear A1698207526

-5%

Part no. A1698207526-1

Mercedes W169 W245 Door Control Unit Left N/S Rear A1698207526

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9337881

BMW 1 3 4 F20 F21 F30 F31 F32 Power Distribution Fuse Box Rear 9337881

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 7621178-1

BMW E81 E87 LCI E90 N43 118i 318i ECU Kit DME CAS3 Key 7621178 Manual

€189.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 99661821901

Porsche Boxster 986 Air Module Control Unit ECU 99661821901

€75.95

Free delivery - Tue, Dec 23

If paid before 14:00

...

Showing 3466-3564 of 12041 products

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 .

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