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. A0009062100
Mercedes W212 Engine Alternator Generator A0009062100
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Mercedes-Benz A-Class W169 SAM Control Module Fuse Box Unit A1695454232
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Mercedes W212 Fuse Box Rear SAM Relay Control Unit Module A2129003702
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Mercedes C209 CLK220 CDI 646.966 Engine ECU Kit A6461505091 Keys Lock Automatic
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Mercedes W205 Alternator 14V/200A Valeo Diesel Engine M626 A0009063701
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Mercedes SLK R171 Roadster Fuse Box Control Unit SAM Module Relay A1715451301
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Mercedes W213 OM654.920 Automatic Transmission Control Unit Module A2139002501
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Mercedes W204 COMAND Navigation CD Player Radio Sat Nav Head Unit A2049003609
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Part no. A6511504133
Mercedes W204 W212 Engine Wiring Diesel Harness Loom Cable E250 CDI A6511504633
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Radar Unit Mercedes W176 W205 W246 GLC C253 Front Bumper Sensor A0009058104
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Mercedes-Benz S-Class W220 Door Control Module Left Rear N/S A2208216279
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Mercedes CLK W202 W208 Battery Negative Earth Cable Wiring A2025400231
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Part no. A6519000700-2
Mercedes W906 313 CDI OM651.955 129HP Diesel Engine ECU Kit A6519000700 Key Lock
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Part no. A2049005112-1
Mercedes W204 Navigation CD Player Radio Stereo Sat Nav Head Unit A2049005112
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Part no. A2055405626
Mercedes W205 C350e Hybrid Electric Drive Battery High Voltage Wiring Harness
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Part no. A1718205126
Mercedes SLK R171 Door Module Front Left N/S Control Unit ECU A1718205126
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Part no. A6421506434-1
Mercedes W251 R 320 CDI 642.950 224HP Engine ECU Kit A6421506434 Keys Lock
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Part no. A6401504033
Mercedes-Benz B-Class W245 180CDI Engine Wiring Harness Loom Cable A6401504033
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Part no. A2054403008
Mercedes W205 X253 Wiring Cable Harness Center Console A2054403008
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Door Module Mercedes GLC X253 Rear Door Left Control Module A2059000828
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Part no. A2035453801
Fuse Box Mercedes W203 C209 Rear SAM Module Relay Control Unit A2035453801
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Part no. A1678201302
Mercedes W167 W256 USB Charger Connecting Unit A1678201302
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Mercedes ML W164 Distronic Radar Sensor Cruise Control Unit Module A2165402945
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Parking Control Module Mercedes C118 W177 W247 PDC Bluetooth Unit A0009004434
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Part no. A2035454501
Mercedes W203 Fuse Box SAM Control Unit Module Relay A2035454501
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Part no. A2098205026
Mercedes W209 Convertible Roof Module Folding Top Control Unit ECU A2098205026
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Part no. A2219006303
Mercedes W221 Radio Multimedia Head Unit A2219006303
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Part no. A0005400072
Mercedes W202 A208 C208 W208 W210 Fuse Box Relay Control Unit A0005400072
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Part no. A6429007201
AdBlue Module Mercedes W166 Diesel OM642 Exhaust Gas Cleaning Unit A6429007201
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Part no. A0141541302
Alternator Mercedes W164 W221 W251 Engine Generator 220A Valeo A0009063522
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Part no. A1648203885
Mercedes ML W164 Front Right Control Unit Module Door A1648203885
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Part no. A1695450632
Mercedes W169 PDC Parking Distance Control Unit Module Rear A1695450632
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Part no. A6519002600-3
Mercedes W906 313 CDI OM651.955 129HP Engine ECU Kit A6519002600 Key Lock Manual
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Part no. A1669003708
Mercedes W166 Hatch Tailgate Central Module Locking Control ECU A1669003708
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Part no. A1725401450
Mercedes SLK R172 Fuse Box Power Distribution Control Module Unit A1725401450
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Part no. A2049004306
Mercedes W204 Navigation CD Player COMAND Radio Sat Nav Head Unit A2049004306
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Part no. A2115406445
Mercedes C219 Gearbox Electronic Control Unit Module A2115406445
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Part no. A1718206926
Mercedes SLK R171 Door Module Front Left Control Module A1718206926
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Part no. A0005455916
Mercedes W204 Automatic Gearbox Transmission Module Unit ECU A0005455916
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Part no. A2049000607
Mercedes W204 W207 Air Suspension Module Regulation Control Unit A2049000607
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Part no. A1698700689-3
Mercedes W169 W245 CD Player Radio Stereo Head Unit A1698700689
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Part no. A6291501933
Mercedes W164 OM629 Diesel Engine Motor Wiring Loom Cable Harness A6291501933
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Part no. A6401507934
Mercedes W169 W245 A180 B180 CDI Engine Control Module A6401507934 Automatic
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Part no. A2129005622
Mercedes W204 Front Fuse Box Relay Control Unit SAM Module A2129005622
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Part no. A6461506378
Mercedes W906 OM646.985 109HP Engine Unit Module ECU Kit Key A6461506378
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Part no. A2059003729
Mercedes W205 Head Unit Radio CD Player Audio Sat Nav Multimedia A2059003729
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Part no. A2115452240
Mercedes-Benz E CLS Class W211 W219 Control Module Bracket Holder A2115452240
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Part no. A9068203526
Door Module Mercedes Sprinter W906 Front Right O/S Control Unit ECU A9068203526
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Part no. A1669059302
Reversing Camera Mercedes W166 Rear View Camera Trunk Lid Tailgate A1669059302
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Part no. A2128270228-PAL
Mercedes W212 Aerial Fin Roof Antenna Shark Palladium Silver - 792 A2128270228
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Part no. A2129004500
Mercedes C207 W212 Fuse Box Relay Control Unit SAM Module A2129004500
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Part no. A2129068800
Radio Head Unit Mercedes W212 COMAND Navi CD DVD Player Control Unit A2129068800
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Part no. A2129005300
Seat Module Mercedes W204 W212 Control Unit Front Left Right N/O/S A2129005300
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Part no. A2059004607
Mercedes W205 S205 W447 Seat Module Front Memory Control Unit A2059004607
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Part no. A1685409032
Mercedes A-Class W168 Door Cable Harness Wiring Front Passenger A1685405008
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Part no. A2095450001
Mercedes CLK W209 Fuse Box Relay Control Unit Module SAM Fuse Box A2095450001
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Part no. A2059001814
Mercedes W205 Air System Control Unit Module ECU A2059001814
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Part no. A2128702751
Control Panel Mercedes W212 Comand Navi CD Switch Push-Button A2128702751
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Part no. A6519007500-8
Mercedes W204 C220CDI BlueEFFICIENCY OM651.911 Engine ECU Kit A6519007500 Key
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Part no. A4475401755
Earth Ground Cable Mercedes Vito W447 Positive Battery Lead Wiring A4475401755
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Part no. A1715451901
Mercedes SLK R171 Fuse Box Rear SAM Relay Control Unit Module A1715451901
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Part no. A1698204085
Airbag Control Unit Mercedes W169 W245 System Module ECU A1698204085
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Part no. A6519005301-5
Mercedes W212 E220CDI BlueEFFI OM651.924 170HP Engine ECU A6519005301 Automatic
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Part no. A1679000511
Mercedes W167 W177 Radio Stereo Player Sat Nav Head Unit ECE A1679000511
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Part no. A0009058802
Mercedes W166 W205 W212 Rear Bumper Blind Spot Radar Sensor Module A0009058802
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Part no. lhd-A2215401250
Mercedes W221 Prefuse Fuse Distribution Box Unit Front A2215401250
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Part no. A2469006018
Mercedes W246 Airbag Belt Locking Retractor Control Unit Module A2469006018
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Part no. A6519009702
Mercedes W176 W246 200 CDI 651.930 136HP Engine Unit ECU A6519009702 Manual
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Part no. A2049001202
Mercedes W204 S204 Estate Rear SAM Control Unit Module A2049001202
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Part no. A2129006924
Mercedes W207 W212 SAM Module Fuse Box Relay Control Unit A2129006924
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Part no. A1669004302
Mercedes W176 W246 Front Door Module Control Unit Module Right O/S A1669004302
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Part no. A2229001809
Mercedes W205 W222 Door Module Front Left N/S Control Unit ECU A2229001809
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Part no. A2118206026
Mercedes W211 Rain And Light Sensor Control Unit Module ECU A2118206026
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Part no. A2218708292
Mercedes W221 Safety Module Air Bag SRS Control Unit ECU A2218708292
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Part no. A2215409032
Ground Line Mercedes W221 Wiring Battery Starter Alternator Cable A2215409032
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Part no. A2125452640
Mercedes W212 Control Unit Module Bracket Holder Mount A2125452640
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Part no. A0155457032
Mercedes W124 S124 Ignition Engine Control Unit Module A0155457032
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Part no. A6549009400-3
Mercedes W907 315CDI OM654.920 Engine Unit Module ECU Kit A6549009400 BCM + Key
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Part no. A2035451003
Fuse Box Cover Mercedes W203 W209 Battery Terminal Housing Trim Cap A2035451003
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Part no. A6519003203-4
Mercedes W906 313 CDI OM651.955 129HP Diesel Engine ECU A6519003203 Manual
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Part no. A2129003502
Mercedes W212 Xenon Headlight Ballast Control Unit Module Hella A2129003502
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Part no. A6511400800-1
Mercedes Sprinter W910 ECU Bracket Control Unit Module Holder Mount A6511400300
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Part no. A1679003718
Door Module Mercedes W205 W213 C253 Control Unit Rear Right O/S A1679003718
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Part no. A9065450401
Fuse Box Mercedes W906 Front Relay Control Unit Electric Module A9065450401
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Part no. A2215407045
Mercedes W221 Gateway Control Unit Module ECU A2215407045
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Mercedes W176 Front Headlight Lamp Plug Socket Wiring Left N/S A0525456026
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Part no. A6401502579-1
Mercedes W169 200CDI OM640.941 140 HP Engine Module ECU Kit A6401502579 Key Lock
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Part no. A0009068302
Mercedes Sprinter W907 Alternator Generator Engine Diesel 250A 14V A0009068302
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Part no. A1679001014
Mercedes V177 Head Unit Media Player Audio Radio Controller A1679001014
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Part no. A2749000700
Mercedes W204 C180 BlueEFFICIENCY M274.910 156HP Engine Unit ECU A2749000700
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Part no. A2229004220
Mercedes GLC X253 Communication Module LTE Telephone Bluetooth A2229004220
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Part no. A2129009004-1
Radio Head Unit Mercedes C207 W207 COMAND Navi CD Player Navigation A2129009004
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Part no. A6519000601-5
Mercedes W906 313 CDI OM651 129HP Diesel Engine Control ECU A6519000601 Manual
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Part no. A1635402209
Mercedes-Benz M ML W163 Rear Bumper Parktronic Wiring Loom Harness A1635402209
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Part no. A1725407805
PDC Wiring Mercedes R172 Parktronic Parking Sensor Cable Rear A1725407805
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Part no. A2079012200
Rain Sensor Mercedes W204 W212 Light Solar Condensation Control Unit A2079012200
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Part no. A1648204189
Mercedes ML W164 Remote Control DVD Media Entertainment Display A1648204189
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Part no. a6394460317
Mercedes Vito W639 Suspension Level Control Unit Module ECU A6394460317
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Part no. A2168206526
Mercedes W221 Bluetooth Module Multimedia Control Unit ECU A2168206526
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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 .