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. A2059004433
Mercedes W205 Head Unit Radio CD Player Audio Sat Nav Multimedia A2059004433
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Mercedes W221 Sound Audio Amplifier Control Unit Module A2218207689
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Mercedes R172 R231 Headlight LED Ballast Control Unit Module A1769009203
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Mercedes-Benz W168 M166 Engine Wiring Harness Loom Cable A1661500033
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Mercedes SLK R171 Air Module Bag SRS Control Unit ECU A1718205826
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Mercedes C238 Vehicle Dynamic Transmission Control Unit Module A2059001136
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Mercedes R171 Convertible Roof Top Control Unit Module ECU A1718204226
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Mercedes W204 W212 Radio Control Function Button Knob Controller A2048709558
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Mercedes W169 W245 W639 W906 Head Unit Radio Media Player Navigation A1699002500
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Mercedes W164 ML350 CDI OM642.820 231HP Engine Control Unit ECU A6429002900
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Mercedes W204 SAM Module Fuse Box Relay Control Unit A2129008007
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PDC Module Mercedes W176 W246 Parking Assist Distance Control Unit A0009003210
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Part no. A2749000800-3
Mercedes W205 C200 274.920 184HP Engine Control Unit ECU A2749000800
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Part no. A6394408637
Mercedes W639 Rear Bumper PDC Wiring Parking Sensor Loom Harness A6394408637
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Part no. A2129008307
Mercedes W212 Fuse Box Control Unit Module SAM Relay Box A2129008307
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Part no. A2139003617
Telematics Module Mercedes W176 W207 W205 Bluetooth Control Unit A2139003617
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Part no. A1635454032
Mercedes W163 ECU Start Engine Control Unit Immobilizer Ring A1635454032
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Mercedes W176 Door Harness Loom Cable Wiring Rear Left Right N/O/S A2465407711
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Part no. A2319003706
Mercedes R231 Control Unit Module Passenger Seat A2319003706
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Part no. A2049069801
Mercedes W204 Navigation CD Player Radio Stereo Sat Nav Head Unit A2049069801
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Part no. A6511505933
Engine Wiring Mercedes W212 Diesel OM651 Cable Loom Harness A6511505933
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Part no. A2129003908-1
Mercedes W212 Audio 20 CD Player Audio Stereo Radio Head Unit A2129003908
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Part no. A2095450701
Sam Unit Mercedes S203 W203 Rear Module Fuse Box A2095450701
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Part no. A0009822223
Mercedes W906 SAM Module Fuse Box Relay Control Unit Regulator A0009822223
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Part no. A2098202689
Mercedes CLK W209 Radio CD Player Stereo Audio Head Unit A2098202689
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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. A2038206385
Mercedes-Benz C-Class W203 Airbag System Control Unit Module ECU A2038206385
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Part no. A9069006303-1
Mercedes W906 Fuse Box SAM Module Control Unit ZGS Temic A9069006303
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Part no. A2059009427
Mercedes W205 Front Air Module SRS Control Unit ECU A2059009427
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Part no. A6519007500-16
Mercedes W204 C220 CDI 651.911 Engine Control Unit ECU A6519007500 Automatic
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Part no. A1718203926
Mercedes A B Class W169 W245 Rain Light Sensor Control Unit Module A1718203926
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Part no. A9079000704
Body Control Module Mercedes Sprinter W907 W910 SAM BCM Unit ECU A9079000704
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Part no. A2078205289
Mercedes C207 Rear Radio Amp Sound Amplifier Audio Getaway Becker A2078205289
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Part no. A1715450901
Mercedes SLK R171 Front Fuse Box SAM Relay Control Unit Module A1715450901
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Part no. A4479007806
Mercedes W447 Door Control Unit Front Right O/S A4479007806
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Part no. A2195404505
Mercedes C219 Coupe Front Bumper Parking Sensor PDC Wiring Harness A2195404505
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Part no. A2115457701
Fuse Box Mercedes W211 CLS C219 Front SAM Control Unit Module A2115457701
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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. A2229004213-1
Keyless Go Mercedes GLC X253 Keyless Entry Control Module A2229004213
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Part no. A2239016902
Engine Sound Generator Mercedes W177 W213 GLC C253 Front Rear Unit A2239016902
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Part no. A6519003203
Mercedes W906 313 CDI OM651.955 129HP Diesel Engine ECU A6519003203 Manual
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Part no. A2048702826
Mercedes S204 Module Control Unit Trunk Lid Rear Tailgate Lift A2048702826
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Part no. A2045408735
Mercedes W204 Front Seat Air Module Wiring Cable Front Right A2045408735
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Part no. A1695400762
Parking Module Mercedes W169 W245 PDC Distance Control Unit Sensor A1695400762
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Part no. A0009006706
Mercedes W205 Adblue Module Exhaust Gas Control Unit ECU BlueTEC SCR A0009006706
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Part no. A2139053303
Mercedes W213 Dashboard Switch Panel A2139053303
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Part no. LRT00134
Mercedes Sprinter W906 Engine Starter Motor Lucas LRT00134
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Part no. A2219006702
Mercedes W216 W221 Central Gateway Control Unit Module VST A2219006702
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Part no. A2539005009
Display Screen Mercedes C253 Vito W447 W448 Head Unit Touch Monitor A2539005009
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Part no. A2129001529
Mercedes-Benz C E Class W204 W207 W212 Front Left Door N/S Control Unit Module
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Part no. A6519003403-3
Mercedes Sprinter W906 OM651.955 163HP Engine Unit Module ECU A6519003403 Manual
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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. A2661534779
Mercedes W169 A200 M266.960 136HP Engine Control Unit ECU A2661534779 Automatic
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Part no. A1729015805
Mercedes SLK R172 Airbag Module SRS Control Unit ECU A1729015805
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Part no. A1669007616
Amplifier DAB Mercedes W176 W204 W212 Control Unit Module ECU A1669007616
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Part no. A2229007009
Mercedes W205 SAM Module Comfort Control Unit ECU A2229007009
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Part no. A9069000004
Mercedes Sprinter W906 Radio Player CD Audio 10 Stereo Head Unit A9069000004
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Part no. A2469008510
Body Control Module Mercedes W117 W176 W242 W246 Fuse Box Sam A2469008510
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Part no. A2218704895
Mercedes W221 Door Module Rear Door Control ECU Unit Left N/S A2218704895
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Part no. A2129004201
Mercedes S212 Estate Fuse Box Rear SAM Module Relay Control Unit A2129004201
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Part no. A2661530391-1
Mercedes W169 W245 A150 B150 M266.920 95HP Engine ECU Kit A2661530391 Key Lock
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Part no. A0009000716
Mercedes Vito W447 Diesel Adblue Module Control Unit ECU A0009000716
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Part no. A2929007101
Mercedes GLE C292 Coupe Trunk Lid Module Automatic Closing A2929007101
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Part no. A2139007107
Mercedes W213 Seat Control Module Unit ECU A2139007107
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Part no. A2035453501
SAM Module Mercedes W203 Fuse Box Control Unit Relay A2035453501
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Part no. A2115409605
Mercedes W211 Rain Light Sensor Control Unit Wiring Loom Cable A2115409605
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Part no. A9064461542
Air Module Mercedes Vito W639 Sprinter W906 Control Unit ECU Sensor A9064461542
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Part no. A1645406501
Mercedes ML W164 Front SAM Control Unit Module ECU A1645406501
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Part no. A0009015810
Gearbox Control Mercedes W177 W247 Transmission Unit Module ECU A0009015810
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Part no. A0009058912
Mercedes W205 W213 C253 Battery Cable Negative Lead Wiring Harness A0009058912
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Part no. A2119820402
Mercedes CLS W219 Battery Fuse Box Control Unit Module A2119820402
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Part no. A1569003303
Mercedes X156 GLE W166 Surround View Camera Control Unit Module A1569003303
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Part no. A2711502933
Engine Wiring Harness Mercedes R171 W203 C209 M271 Loom Cable A2711502933
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Part no. A2129000006
Fuse Box Mercedes W212 Front Relay Control Unit Electric Module SAM A2129000006
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Part no. A2035454932
Parking Module Mercedes W203 C209 Parktronic Control Unit A2035454932
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Part no. A6511501879-3
Mercedes W639 OM651.940 113 CDI 136HP Engine Module ECU A6511501879 Automatic
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Mercedes W221 S350 BlueTEC OM642.862 Engine ECU Kit Ignition + Key A6421508900
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Part no. A2139002422
Mercedes W213 Front Door Module Control Module Unit Right O/S A2139002422
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Part no. A2711538579-1
Mercedes R171 SLK 200 M271.944 163HP Engine Module ECU Kit A2711538579 Key Lock
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Part no. A1635450205
Mercedes W163 Fuse Main Box Relay Comfort Control Module Unit CMM A1635450205
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Part no. A1718204326
Mercedes SLK R171 Front Air Module SRS Control Unit ECU A1718204326
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Part no. A2709002100-3
Mercedes X117 CLA 250 270.920 4-Matic Engine Control Unit Module A2709002100
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Part no. A4479009509
Mercedes W447 114CDI SAM Comfort Control Unit Module Box ECU A4479009509
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Part no. A1718207226
Mercedes SLK R171 Door Module Front Right Control Unit ECU A1718207226
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Part no. A0025426618
Mercedes W211 W220 ESP Yaw Rotation Rate Sensor A0025426618
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Part no. A1645402372
Mercedes W164 W251 Fuse Relay Module Rear Fuse Box Unit A1645402372
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Part no. A0015429018
Yaw Sensor Mercedes W210 W220 ESP Rotation Rate Control Unit Module A0015429018
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Part no. A2139004625
Mercedes W213 C238 C253 C257 Air Module Control ECU Sensor A2139004625
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Part no. A2701501433
Engine Wiring Mercedes W176 W246 W242 M270 Loom Harness Cable A2701501433
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Part no. A2128270228-ING
Mercedes W212 Estate Roof Antenna Cover Shark Indium Grey Metallic A2128270228
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Part no. A2129006824
Front Fuse Box Mercedes W204 S204 Relay Control Unit SAM Module A2129006824
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Part no. A0009059013
Mercedes W205 GLC X253 Distronic Radar Sensor Control Unit Module A0009059013
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Part no. A2118701826
Seat Module Mercedes W203 W211 Control Unit Front Left Right N/O/S A2118701826
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Part no. A2078210411-1
Centre Console Connector Mercedes W204 W207 USB Port Socket Trim A2078210411
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Part no. A2045450169
Mercedes W204 SAM Module Fuse Box Relay Control Unit A2045450169
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Part no. A6461500091-2
Mercedes W203 C220 CDI 646.963 150HP Engine ECU Kit A6461500091 + Key + Lock
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Part no. A6519007103-2
Mercedes Sprinter W907 311 CDI 651.958 114HP Engine Control Unit ECU A6519007103
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Part no. A2709060026-1
Starter Motor Mercedes W176 W246 Engine Starter Unit 12V Denso A6459060300
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Part no. A6511507386
Engine Wiring Mercedes W176 W246 Diesel OM651 Loom Harness Cable A6511507386
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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 .