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. A4479000101
Door Module Mercedes Vito W447 Rear Right O/S Door Control Unit A4479000101
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Speed Sensor Mercedes Sprinter W906 Impuls Control Unit Module A0155429317
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Part no. A1645403372
Mercedes ML W164 Fuse Box Relay Control Unit Rear A1645403372
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Air Module Mercedes ML W166 Interior Safety SRS Control Module A1669001311
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Engine Wiring Mercedes W168 668942 Diesel Module Loom Harness Cables A6681500033
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Mercedes W176 W207 W246 USB Interface Multimedia Adapter Connector A1728202100
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Fuse Box Mercedes W169 W245 Electrical Relay Control Unit A1695450540
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Part no. A2139002022
Door Module Mercedes W213 C238 Front Left N/S Control Unit ECU A2139002022
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Alternator Generator Mercedes W204 W212 M271 Engine Lucas 150A 14V LRA03506
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Mercedes-Benz A E M Class W163 W168 W210 CD Player Audio 10 Stereo Radio Unit
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Mercedes W204 SAM Control Unit Module Fuse Box Relay Rear A2049060105
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Part no. A9068200286
CD Radio Mercedes Vito W639 Sprinter W906 Audio Stereo Head Unit A9068200286
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Part no. A6461506479
Mercedes C209 220 CDI M646.966 150HP Engine Unit ECU A6461506479 Automatic
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Part no. A2205400030
Mercedes-Benz S-Class W220 Battery Lead Cable Positive Pole A2205400030
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Part no. A9069006701-1
SAM Module Mercedes Sprinter W906 Fuse Box Relay Control Unit A9069006701
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Part no. A1775407932-1
Mercedes W177 W247 Positive Battery Cable Lead Wire Starter A1775407932
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Part no. A2609060100
Mercedes C118 W177 W247 M260 Petrol Engine Starter Motor 12V A2609060100
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Part no. A2129005912
Mercedes W204 Fuse Box Relay SAM Control Unit Module A2129005912
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Part no. A2108205689
Mercedes-Benz E W210 S210 CD Player Radio Audio Navi SMS Head Unit A2108205689
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Part no. A4479001000
Mercedes Vito W447 Air Module Sensor Control Unit ECU A4479001000
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Part no. A2059002141
Mercedes W205 Air Module Control Unit SRS ECU A2059002141
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Part no. A6385454440
Mercedes W639 W906 Battery Terminal Fuse Box Control Unit Module A6385454440
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Part no. A0009825323
Mercedes GLC X253 Relay Battery Control Cut Off Out Relay A0009825323
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Part no. A2385406926
Mercedes W213 OM654 Battery Cable Starter Alternator Wiring Harness A2385406926
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Part no. A2118701585
Rain Sensor Mercedes W211 W219 Windscreen Control Unit Module A2118701585
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Part no. A0175450632
Mercedes C140 Gearbox Module Transmission Basic Control Unit A0175450632
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Part no. A6401540402
Alternator Generator Mercedes W169 W245 OM640 Diesel Engine 150A 14V A6401540402
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Part no. A1719000100
Radio Head Unit Mercedes SLK R171 CD Player Control Unit Module A1719000100
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Part no. A6401540502
Mercedes W169 W245 A B 160 180 200 CDI OM640 Alternator Generator A6401540502
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Part no. A0009056121
Mercedes W118 W177 W247 Front Radar Distance Control Unit Module A0009056121
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Part no. A2118205785
Mercedes W211 S211 Airbag System Control Unit Module ECU
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Part no. A2118704390
TV Tuner Mercedes ML W164 W211 CLS C219 Video Control Unit Module A2118704390
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Part no. A9069006100
Mercedes Sprinter W906 Door Module Front Right O/S Control Module A9069006100
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Part no. A0009009935
Mercedes EQA350 H243 4matic Electric Battery Charger Control Module A0009009935
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Part no. A6519004201-1
Mercedes GLE250 W166 OM651.960 204HP Engine ECU Kit Ignition + Key A6519004201
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Part no. A0009820123
Relay Mercedes W166 Voltage Dip Protection Start/Stop Relay Module A0009820123
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Part no. A1645403072
Mercedes ML W164 Rear Fuse Relay Box Module SRB A1645403072
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Part no. A6429009900
Adblue Module Mercedes W164 W212 W221 Control Unit ECU A6429009900
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Part no. A0009001803
Mercedes W176 W204 C207 C218 W246 Fuel Pump Control Module A0009001803
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Part no. A9069006001
CD Radio Mercedes W639 W906 Audio Stereo Head Unit A9069006001
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Part no. A1644406532
Mercedes ML W164 Diesel OM629 Wiring Alternator Starter Harness A1644406532
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Part no. A0215455632
Mercedes Sprinter W901 OM602 Engine Control Unit ECU Module A0215455632 Manual
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Part no. A4479060117
Mercedes Vito W447 Front Fuse Box Relay Control Unit Module A4479060117
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Part no. A1718206226
Mercedes R171 Door Control Module Front Right O/S A1718206226
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Part no. A2038705089-1
Mercedes W203 CD Media Player Radio Audio 20 Phone Head Unit A2038705089
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Part no. A0061510601
Mercedes W164 M113 Petrol Engine Starter Motor A0061510601
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Part no. A2079014200
Airbag Module Mercedes W207 C207 Coupe Air Bag SRS Control Unit ECU A2079014200
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Part no. A2118701126
Mercedes W211 Front Drivers Door Left N/S Control Module A2118701126
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Part no. A2229001912
Mercedes W205 C253 Door Module Rear Left N/S Control Unit ECU A2229001912
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Part no. A6421540402-1
Mercedes W164 W204 W211 OM642 Diesel Alternator Generator A6421540402
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Part no. A6735460011
Mercedes Vito Viano W639 Battery Cable Positive Wiring Harness A6735460011
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Part no. A1769051000-1
Mercedes W176 Front Crash Impact Airbag Sensor Pressure Sensor Unit A1769051000
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Part no. A4478200035
Microphone Mercedes W447 W907 W910 Hands-free Interior Mic Unit A4478200035
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Part no. A2059065806
Mercedes W205 W213 C253 Fuse Box Front Relay Control Unit Module A2059065806
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Part no. A2469000816
Head Unit Mercedes GLA X156 Radio Media Player Navigation Switch A2469000816
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Part no. A1718204126
Mercedes SLK R171 Front Air Module SRS Control Unit ECU A1718204126
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Part no. A6429061000
Mercedes W204 W213 ML W166 OM642 Diesel Engine Starter Starting Unit A6429061000
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Part no. A0009068806
Alternator Mercedes R172 SLC 43 AMG Petrol OM276 200A Valeo A0009068806
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Part no. A6461504233
Mercedes Sprinter W906 OM646 Diesel Engine Wiring Harness Loom Cable A6461504233
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Part no. A2087600104
Mercedes-Benz CLK W208 Front Left Right Door Interior Handle Bowden Pull Cable
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Part no. A1718205226
Mercedes SLK R171 Door Module Front Right Control Unit ECU A1718205226
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Part no. A1665408909
Mercedes ML W166 Diesel OM642 Engine Automatic Transmission Wiring Harness
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Part no. A1645400701
Mercedes ML W164 Rear SAM Module Control Unit Fuse Box A1645400701
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Part no. A2749002900
Mercedes X253 GLC 300e M274.920 4-Matic Engine ECU Unit Module A2749002900
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Part no. A2195404605
Mercedes C219 Rear Bumper PDC Wiring Parking Sensor Loom Harness A2195404605
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Part no. A2129005722-1
Mercedes W204 SAM Module Fuse Box Relay Control Unit A2129005722
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Part no. A6079002300-2
Mercedes W176 180 CDI OM607.951 Blue Efficiency ECU Kit A6079002300 Key Lock
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Part no. A6399000800
Mercedes Vito W639 Fuse Box Relay Control Unit Front SAM Module A6399000800
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Part no. A2139000323
Mercedes W213 Multifunction Front Camera Control Unit A2139000323
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Part no. A9068201589
Mercedes Sprinter W906 Radio Stereo Audio Head Unit A9068201589
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Part no. A0051511301-1
@Starter Motor Mercedes W203 W210 W211 Diesel Engine Actuator MAWS38371
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Part no. A2465409711
Seat Wiring Mercedes C117 W176 W246 Loom Harness Cable Left N/S A2465409711
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Part no. A2049005003
Mercedes S204 Estate Fuse Box Rear SAM Module Control Unit A2049005003
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Part no. A4479008006
Mercedes Vito W447 Door Module Front Right O/S Control Unit ECU A4479008006
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Part no. A2469003519
Mercedes W176 W246 Radio COMAND Nav CD Player Control Head Unit A2469003519
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Part no. A6461500477
Mercedes W906 311 CDI 646.985 109HP Engine Unit Module ECU A6461500477 Manual
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Part no. A9068200486
Radio Player Mercedes W639 W906 Audio Stereo CD Head Unit Display A9068200486
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Part no. A0141542702
Alternator Mercedes Vito W639 Sprinter W906 Generator 14V 120A Bosch A0141542702
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Part no. A2038703594
Mercedes CL203 CLC Head Unit CD Player Radio Audio Controller Unit A2038703594
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Part no. A6398200186
CD Radio Mercedes W639 W906 Audio Stereo Head Unit A6398200186
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Part no. A1661500333
Mercedes A-Class W168 Cable Starter Line Negative Line Battery A1661500333
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Part no. A2059009527
Mercedes W205 Air Module ICM SRS Control Unit ECU A2059009527
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Part no. A2125402605
Mercedes W212 Rear Suspension Shock Left N/S Sensor Wiring Cable A2125402605
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Part no. A9069003502
Mercedes W906 Fuse Box Relay Control Unit Electric Module SAM A9069003502
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Part no. A0028272104-1
Mercedes W204 USB Port Cable Multimedia Interface Cable MI2-Ipod A0028272104
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Part no. A1635457332
Mercedes ML W163 Comfort Control Module Central Electronics A1635457332
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Part no. A6511508656
Mercedes W906 OM651.955 Diesel Engine Wiring Harness Loom Cable A6511508656
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Part no. A2469008819
Radio Head Unit Mercedes W176 W246 Audio 20 Media Player Navigation A2469008819
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Part no. A1669002307
Mercedes ML W166 PDC Parking Distance Control Unit Module Sensor A1669002307
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Part no. A4479058203
Mercedes Vito W447 Radio Remote Control Alarm Key Fob Unit A4479058203
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Part no. A0111549302
Mercedes-Benz C-Class W203 M111 C 180 Bosch Alternator Generator 0124515056
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Part no. A9075400186
Mercedes Sprinter W907 Battery Cable Alternator Wiring Loom Harness A9075400186
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Part no. A2218702986
Mercedes W221 Seat Control Module SSG Unit Front Left Seat N/S A2218702986
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Part no. A1695420018-KB
Mercedes W169 Front Bumper Parking Distance Sensor Parktronic Kosmos Black 191
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Part no. A2049017901-1
Rain Sensor Mercedes SLK R172 W204 Front Windscreen Control Unit A2049017901
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Part no. A2045403510
Mercedes W204 Battery Wiring Cable Harness Loom Rear A2045403510
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Part no. A9105409455
Mercedes Sprinter W910 Wiring Loom Cable Harness A9105409455
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Part no. A1779006604
Airbag Module Mercedes C118 W177 W247 Front Air Bag Control Unit ECU A1779006604
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Part no. A1729008412
Mercedes SLK R172 Roadster Folding Vario Roof Control Module A1729008412
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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 .