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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BMW 5 Series E60 E61 Airbag ECU Control Unit Gateway Module 6960381
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VW Volkswagen Touareg 7L Front Bumper PDC Parking Sensor Wire Harness 7L6971095G
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BMW E91 Touring Ultra Sonic Burglar Alarm System Sensor Module 6972065
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Mercedes-Benz W202 C208 W208 Control Unit Bracket Holder Boot Trunk A2025458440
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Mercedes C209 200 Kompressor 271.940 163HP Engine ECU Kit A2711530691 Key Lock
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BMW 1 3 X1 Series E81 E87 E90 E91 E92 Ultra Sonic Module Alarm System 6946528
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Porsche Boxster 986 Comfort Module Control Unit ECU 99661826006
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BMW 5 Series F11 Touring Antenna Aeral Amplifier Diversity 868 MHZ 9276036
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Mercedes W221 Air Conditioning Climate Heater Control Unit Module A2218700326
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Mercedes Citan W415 109 CDI OM607.951 Engine Control Unit ECU 237104376R Manual
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Audi A8 4E S8 D3 Head Unit Interface Control Module 4E0910732A
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Audi A3 8P VW Scirocco Mk3 Starter Motor Engine Valeo 1.4 TSI Petrol 02Z911024P
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Fuse Box Citroen Berlingo Peugeot Partner BSM Module Control Unit 9807028880
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BMW Z4 E85 Roadster 2.5i N52 177HP ECU Kit DME 7571510 EWS + Key Manual
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Suspension Module BMW F82 Rear Axle Dynamic Suspension Control Module 6895714
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BMW 3 Series E93 Negative Battery Lead Cable 7599959
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Mercedes W906 Glow Plug Relay Module Unit A6519007703
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BMW 5 Series E60 E61 Centre Console Switch DTC PDC 6969418
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Mercedes W221 DSM ISM Automatic Gearbox Control Unit Module ECU A1644460710
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Mercedes W221 S320 CDI 642.930 235HP Engine Control ECU A6421507391 Automatic
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Volkswagen Crafter SY Anti Theft Alarm Sensor Module Control Unit 5Q0951172A
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BMW Z4 E89 LED Footwell Control Module ECU 9286885
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BMW E61 Touring Body Control Module ECU Control Unit High 9176070
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Vauxhall Opel Astra G Display Screen Multifunction Unit Dashboard 009133265
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Volkswagen Touareg 7L Engine Starter Motor 077911023
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Mercedes W221 Fuse Box SAM Relay Control Unit Signal Module Front A2219007102
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BMW Z4 Series E85 Battery Lead Positive Cable Plus Pole 6935667
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Porsche Macan 95B Body Gateway Module ECU Control Unit 95B907530L
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BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9298961
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Audi A4 B7 2.0 TFSI BUL Quattro 220HP Engine Control ECU Kit 8E0910115H Manual
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Mercedes ML W164 Gateway Control Unit Gateway Module ECU A1645406745
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VW Volkswagen Golf SV Gateway Control Unit Module ECU GW MQB High 3Q0907530L
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Peugeot 307 1.4 HDI Diesel DV4-TD Engine Control Unit ECU 9647158180 Manual
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BMW E60 E61 E65 Compact Alternator Generator Valeo 170A 7792072
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Mercedes Vito Viano W639 Side Sliding Door Control Unit Module ECU A6399000300
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Mercedes W204 COMAND Navigation CD Player Radio Sat Nav Head Unit A2049003609
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Mercedes W164 Front Fuse Box SAM Relay Control Unit Module A1645402401
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BMW F10 F11 535d F13 640d N57Z 313HP ECU Kit DDE 8578115 Key CAS4 Automatic
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Relay Mercedes W124 E280 Fuse Box Light Control Relay A1265420332
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Mercedes ML W164 W251 Air Module SRS Control Unit ECU A1648207426
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Dashboard Wiring BMW G30 G31 Front Centre Console Loom Harness 9366338
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BMW E46 316i M43 Petrol Engine Wiring Harness Engine Module Wiring 1439874
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BMW E90 E91 E92 Professional CCC DVD Navigation System Controller 9148016
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BMW E81 E87 E90 E91 Hands-free Electronics Charging MULF2 9163348
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Display Screen Citroen Berlingo Peugeot Partner Dashboard Monitor 9803399680
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Renault Trafic 3 BSI BSM Body EMM-T4 L3 Control Unit Module 231A08052R
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Mini Cooper S F55 F56 B48C 192HP Petrol Engine ECU Kit 9897880 BDC + Key
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VW Volkswagen Golf Mk7 1.6 TDI CLHA Diesel Engine Starter Motor 02Z911024L
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BMW E60 Light Control Unit Module LCM LM E6X MAN. LWR Lear 6983536
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Mercedes W204 SAM Module Control Unit Electrical Fuse Box Unit A2129003825
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Ford Galaxy Mk3 Door Module Front Right O/S Control Unit ECU 6G9T-14B533-BL
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BMW X5 E53 3.0d M57N 218HP ECU Kit DDE + EWS3 + Key 7794626 Automatic Gearbox
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Air Module BMW E60 E63 Control Unit Centre Sensor ECU 6952994
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Porsche Boxster 986 2.7 9622 220HP Engine Control ECU Kit 99661860500 Manual
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Audi A3 8V 1.4 TFSI CZEA Engine Control Module Unit ECU 04E907309A Manual
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Wiring Harness Mercedes W221 OM642 Engine Wiring harness Loom A6421509089
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BMW E60 E87 E90 LCI N47 120d 320d ECU Control Unit Kit DDE 7823420 CAS3 Key
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Adblue Module Mercedes W447 W906 Control Unit ECU A0009004213
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Audi A5 8T 2.0 TDI CGLC Engine Unit ECU Kit 03L906018JH Key Ignition Lock
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Airbag Module BMW E46 X5 E53 Control Unit ECU Side Air Bag 6905491
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Audi A7 4G8 Central Gateway Control Lear Module Unit ECU 4G0907468G
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Part no. 1940809
Ford B-Max Alternator Generator 14V 150A 1.0 GTDI EcoBoost CV6T-10300-BC
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BMW E87 LCI E90 116i 316i 1.6 Petrol N43 122HP ECU Kit DME CAS3 Key 7579142
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BMW E92 ECU Body Control Module L1 PL2RR JBBFE IIIR Junction Box 9226325
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Mercedes W164 W204 W211 C216 C219 M273 Starter Motor Assembly A0061513701
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Mercedes W212 Fuse Box Housing Relay Unit Module A2125400080
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Audi A4 B7 Body Comfort Control Module BCM Unit ECU 8H0959433M
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Mercedes SLK R171 Roadster Soft Top Folding Roof Control Module A1718204926
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BMW G16 G26 Tailgate Lift Boot Lid Control Unit Module Trunk 9852925
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Mercedes W204 Radio Control Function Button Knob Controller Unit A2048707658
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Volkswagen Golf Mk7 Audi A3 8V Alternator 14V 140A 1.5 TSI 05E903026B
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BMW E60 E87 E90 120d 320d 520d M47N2 ECU Control Unit Kit DDE 7801711 CAS2 Key
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Mercedes W205 Centre Console Wiring Harness Cable Loom A2055404734
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Starter BMW G20 G21 G30 G31 G01 Engine Starter Motor 8671504
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BMW E90 Xenon Footwell Light Module Control Unit ECU PL2 FRMFA 9128184
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Audi A3 8P 1.9 TDI BLS 105HP Engine Control Module Unit ECU 03G906056S Manual
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Mercedes-Benz A B E M W169 W245 W210 W163 Relay 5-Pin Yellow Hella A0025427419
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VW Amarok Mk2 Headlight Headlamp Control Unit Module Sensor G2412-154530-B
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Part no. 8518168-1
BMW E81 E82 E87 LCI E88 123d Engine N47S ECU Kit DDE 8518168 CAS3 + Key Manual
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BMW F30 335i F32 F33 435i N55 306HP Engine Control Unit ECU 8639582 Automatic
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Volkswagen VW Caddy Door Harness Loom Cable Wiring Front Left 2K0971557AG
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VW Volkswagen Touareg 7L Automatic Gearbox Module Control Unit ECU 09D927750EE
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Range Rover Evoque L538 Speaker Audio Amplifier Module Unit EW93-19C164-AB
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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 .