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. A2045453901
Mercedes W204 Fuse Box Relay Control Unit Electric Module SAM A2045453901
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Mercedes SLK R171 Door Module Front Right Control Unit ECU A1718205226
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Mercedes W140 Electric Seat Adjustment Control Unit Module ECU A1408205126
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Mercedes W246 Air Module Control Unit ECU Module A2469000709
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Mercedes Vito W639 Cover Fuse Box Battery Trim Panel Lid A6395450003
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Part no. A6461540002-1
Alternator Mercedes Sprinter W906 Diesel OM646 Engine Alternator A6461540002
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Mercedes R172 Door Module Mercedes Front Right O/S Control Unit A2129009229
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Mercedes W211 Front Fuse Box SAM SRB Module Relay Control Unit A2115455232
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Mercedes W203 Door Control Module Front Left N/S A2038201585
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Part no. A1665402950
Mercedes W166 Prefuse Box F32/4 Power Distribution Box A1665402950
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Parking Sensor Display Mercedes W176 W204 W246 Dashboard Panel PDC A1725420023
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Battery Cable Mercedes W176 W246 Negative Lead Wiring Harness A2465406432
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Mercedes W251 R 350 CDI 642.950 224HP Engine Unit ECU Kit A6421508100 Key Lock
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Mercedes-Benz M ML W163 Rear Bumper Parktronic Wiring Loom Harness A1635402209
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Mercedes SLK R171 Roadster Fuse Box Control Unit SAM Module Relay A1715451301
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Part no. A9069006102
Mercedes Sprinter W906 Radio CD Player Audio Stereo Head Unit A9069006102
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Part no. A9069000103
Mercedes Sprinter W906 Radio CD Player Audio Stereo Head Unit A9069000103
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Part no. A2465410105
Battery Cover Mercedes C117 W176 W246 Frame Bracket Mount Holder A2465410105
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Mercedes W204 USB Port Cable Multimedia Interface Cable MI2-Ipod A0028272104
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Part no. A6395420018
Mercedes Vito W639 Steering Wheel Angle Sensor Ring Squib A6395420018
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Part no. A2469000012-1
Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012
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Mercedes W202 Central Locking Vacuum Pump Control Unit A2028001448
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Part no. A6549001400-1
Mercedes W213 E220 CDI 654.920 194HP Engine ECU Kit A6549001400 Automatic
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Mercedes ML W164 W211 W221 Engine Starter Motor A0061515601 0001109262
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Part no. A2661531491
Mercedes W169 A150 M266.920 95HP Engine Control Unit ECU A2661531491 Automatic
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Part no. A2079052800
Mercedes-Benz E-Class W207 Cabrio A207 Anti Theft Alarm Module Control Unit ECU
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Part no. A6519002600-1
Mercedes W906 OM651.957 Diesel Engine ECU Kit Unit A6519002600 Key Lock Manual
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Mercedes W639 Automatic Gearbox EGS Control Unit Transmission Module A0005458916
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Part no. A2038209385
Mercedes CL203 C209 Bi-Xenon Headlight Ballast Control Unit Module A2038209385
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Part no. A0009058912
Mercedes W205 W213 C253 Battery Cable Negative Lead Wiring Harness A0009058912
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Part no. A2118702626
Air Module Mercedes W211 CLS C219 SRS Control Unit ECU A2118702626
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Part no. A2049000902
Fuse Box Mercedes W204 Rear SAM Relay Fuse Box Control Module A2049000902
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Part no. A0009820012
Mercedes W176 W212 W246 Voltage Converter Power Distributor Inverter
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Part no. A2108206526
Mercedes-Benz E W210 Seat Memory Control Unit Module Front Left A2108206526
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Part no. A2731532979-1
Mercedes W221 S500 M273.961 388HP Engine Control Unit ECU Kit A2731532979 Key
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Part no. A0002703352
Mercedes W164 C207 Automatic Gearbox ECU Control Unit EGS Module A0002703352
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Part no. A2469002318-1
Radio Head Unit Mercedes W176 Media Player Navigation Unit A2469002318
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Part no. A6519003701
Mercedes W212 OM651.924 E220CDI 170HP Engine Control Unit Module ECU A6519003701
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Part no. A6395450601-1
Mercedes W639 Fuse Box Relay Control Unit Electric Module SAM A6395450601
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Part no. A2539006905
Mercedes GLC X253 Central Display Dashboard Infotainment Screen A2539006905
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Part no. A0009827008-1
Mercedes W204 W212 W222 Auxiliary Additional Generator Battery A0009827008
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Part no. A4475401755
Earth Ground Cable Mercedes Vito W447 Positive Battery Lead Wiring A4475401755
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Part no. A2165420018
Yaw Rate Sensor Mercedes W169 W245 W211 W219 Turn Rate Sensor A2165420018
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Part no. A9068201589
Mercedes Sprinter W906 Radio Stereo Audio Head Unit A9068201589
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Part no. A1685400230
Battery Starter Wiring Mercedes W168 Harness Cable Positive A1685400230
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Part no. A1699010100-2
Fuse Box Mercedes W169 W245 SAM Body Control Module Unit ECU A1699010100
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Part no. A2115456532
SAM Module Mercedes W211 C219 Front Body Comfort Control Unit ECU A2115456532
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Part no. A4479058203
Mercedes Vito W447 Radio Remote Control Alarm Key Fob Unit A4479058203
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Part no. A1695407705-1
Mercedes W169 W245 Door Cable Harness Wiring Loom Front Left N/S A1695407705
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Part no. A1645453316
Mercedes ML W164 Parktronic Parking Control Unit Module A1645453316
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Part no. A1635452132
Mercedes ML W163 Seat Module Control Unit Front Left Right N/O/S A1635452132
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Part no. A2389008601
Communication Module Mercedes W177 W205 W213 X253 Hermes LTE Unit A2389008601
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Part no. A2225403150
Fuse Box Mercedes W205 Front Passenger Side Footwell Fuse Box A2225403150
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Part no. A1645401730
Mercedes W164 Battery Starter Alternator Wiring Harness Cable OM642 A1645401730
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Part no. A0275450132
Mercedes W202 W210 Automatic Gearbox EGS Control Unit Module ECU A0275450132
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Part no. 284B63788R
Mercedes Citan W415 109 CDI Fuse Box Module Unit 284B63788R
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Part no. A2108206626
Mercedes-Benz E W210 Seat Memory Control Unit Module Front Right A2108206626
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Part no. A1645402830
Mercedes ML W164 Battery Positive Cable Wiring A1645402830
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Part no. A4475406353
Mercedes Vito W447 Battery Cable Diesel OM651 Alternator Wiring A4475406353
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Part no. A2049003609-1
Mercedes W204 COMAND Navigation CD Player Radio Sat Nav Head Unit A2049003609
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Part no. A4474404705
Engine Wiring Mercedes Vito W447 OM651 Engine Harness Cable A4474404705
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Part no. A6421506100-1
Mercedes W164 ML320 CDI 4-Matic OM642.920 Engine ECU Kit A6421506100 Key Lock
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Part no. A2749000900
Mercedes R172 SLK500 M274 Engine Control Unit Module ECU A2749000900
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Part no. A6291501933
Mercedes W164 OM629 Diesel Engine Motor Wiring Loom Cable Harness A6291501933
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Part no. A1715450701
Mercedes SLK R171 Rear SAM Control Unit Module Relay Fuse Box A1715450701
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Part no. A2118705694
Mercedes W211 Radio Head Unit CD Audio Player Control Unit A2118705694
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Part no. A2059004433
Mercedes W205 Head Unit Radio CD Player Audio Sat Nav Multimedia A2059004433
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Part no. A2219050018-1
Mercedes W221 Headlining Alarm Sensor Module Cover Trim Black A2219050018
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Part no. A4479009609
Mercedes Vito W447 Fuse Box Relay Control Unit Electric Module SAM A4479009609
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Part no. a1699007900
Mercedes W169 W639 COMAND Navigation Head Unit Radio Sat Nav Screen A1699007900
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Part no. A2721536979-1
Mercedes W221 S350 M272.965 272HP Engine ECU Kit A2721536979 Ignition + Key
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Part no. A0131540002
Alternator Mercedes W203 Diesel OM648 OM646 Engine ALternator 200A A0131540002
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Part no. A6511503233
Engine Wiring Mercedes W204 OM651 Diesel Harness Loom DDE A6511503233
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Part no. A1669005012
Mercedes W166 Front Door Module Left N/S Control Unit ECU A1669005012
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Part no. A6461506378-1
Mercedes W906 311CDI OM646.985 109HP Engine Unit Module ECU A6461506378 Manual
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Part no. A2044400035
Mercedes W204 PDC Sensor Wiring Loom Harness Front Bumper A2044400035
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Part no. A9062700060
Mercedes Sprinter W906 Mechatronic Automatic Gearbox Control Unit A9062700060
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Part no. A0355454232
Mercedes W211 Automatic Gearbox Transmission Module Control Unit ECU A0355454232
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Part no. a2469004716
Radio CD Player Mercedes W176 W246 Audio Navigation Stereo Head Unit A2469004716
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Part no. A1645406501
Mercedes ML W164 Front SAM Control Unit Module ECU A1645406501
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Part no. A2661502933
Mercedes A B W169 W245 M266 Petrol Engine Wiring Harness Loom A2661502933
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Part no. A2118701985
Mercedes W211 Door Module Front Left N/S Control Unit ECU A2118701985
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Part no. A4475407880
Mercedes Vito W447 Front Passenger Side Fuse Box Control Unit Module A4475407880
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Part no. A1695407705
Mercedes-Benz A B W169 W245 Door Cable Harness Wiring Loom Front Left N/S
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Part no. A2229001614
Module Mercedes C205 Front Door Right O/S Control Module Unit A2229001614
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Part no. A4475450069
Mercedes Vito W447 Control Unit Fuse Box Compartment Mount A4475450069
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Part no. A0051511301-2
Starter Motor Mercedes W203 W210 W211 Diesel Engine Actuator A0051511301
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Part no. A2119060700
Mercedes CLS W219 Head Unit CD Player Navigation Radio Audio Unit A2119060700
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Part no. A1638201589
CD Changer Mercedes ML W163 6 Disc Changer With Magazine A1638201589
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Part no. A6429002900-6
Mercedes C207 E350 CDI BlueEfficiency OM642.836 Engine Module ECU A6429002900
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Part no. A0015429619
Mercedes R129 W202 Relay Green Control Unit 12V 30A A0045450405
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Part no. A2115420418
Mercedes W211 Negative Battery Terminal Cable Wiring A2115420418
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Part no. A6421509478-2
Mercedes W164 ML320 4-Matic OM642.940 Diesel Engine Unit ECU Kit A6421509478 Key
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Part no. A2118702085
Mercedes W211 Door Module Front Right O/S Control Unit ECU A2118702085
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Part no. A2059008618
Safety Module Mercedes W205 Airbag SRS Control Module Unit A2059008618
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Part no. A2035450701
Mercedes W203 Fuse Box Rear SAM Module Relay Control Unit A2035450701
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Part no. A0009827008
Mercedes W204 W212 W222 Auxiliary Additional Generator Battery A0009827008
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Part no. A1695406805
Mercedes-Benz W245 Front Bumper Parking Sensor Parktronic Wiring Cable Harness
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Part no. A0009005109
Mercedes W205 X253 Distronic Radar Sensor Cruise Control Unit Module A0009005109
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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 .