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. A2057200522
Mercedes GLC X253 Front Door Trim Cover Panel Strip Left N/S Black A2057200522
£56.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2049060902
Mercedes-Benz C-Class W204 COMAND Navi CD Player Radio Head Unit A2049060902
£379.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A4155403105
Mercedes Citan W415 Rear Bumper Parktronic Camera Wiring Harness A4155403105
£56.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A1718600205
Mercedes R171 Passenger Seat Air Module Control Unit Module A1718600205
£47.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A1699002400
Mercedes W169 CD Navi Media Player Radio COMAND Head Unit A1699002400
£427.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2059001811
Mercedes W205 Rear Door Control Module Unit Left N/S ECU A2059001811
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A4475404926-1
Mercedes W447 Front Left Right N/O/S Door Wiring Harness Loom A2055409131
£23.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A0008703693
Mercedes W221 Front Door Control Module Unit ECU Right O/S A0008703693
£161.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A0005463704
Mercedes C118 Positive Pole Battery Insulating Cap Cover Trim A0005463704
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2711534591
Mercedes W203 C180 Kompressor M271 Engine Module ECU A2711534591 Automatic
£142.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2218704895
Mercedes W221 Door Module Rear Door Control ECU Unit Left N/S A2218704895
£23.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. rhd-A2475402506-1
Control Unit Bracket Mercedes W177 W247 SAM Module Panel Cover A2475402506
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A1779001704
Mercedes V177 Door Module Rear Right Control Unit A1779001704
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2098202326
Mercedes CLK W209 Convertible Roof Top Control Unit Module ECU A2098202326
£132.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2318270026
Mercedes-Benz S-Class W221 Armrest Media Interface Cable Wiring Plug A2318270026
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A1775408312
Door Wiring Mercedes W177 W247 Driver Side Cable Harness Loom A1775408312
£28.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2128201789
Mercedes W212 Antenna Amplifier Aerial Module C Pillar Left N/S A2128201789
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2661538479
Mercedes W169 A150 Petrol M266 95HP Engine Control Module A2661538479 Manual
£23.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2979006811
Mercedes W206 Radio Navigation COMMAND NTG7 High A2979006811
£712.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2049003509
Mercedes W204 S204 Radio Head Unit Sat Nav CD Player 2049003509
£42.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2215401833
Mercedes W221 Door Harness Left Right N/O/S Rear Door Wiring Loom A2215401833
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2218211251
Mercedes W221 Dashboard Instrument Cluster Panel Button Switch A2218211251
£18.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A6461505091-2
Mercedes W203 C220 CDI 150HP 646.963 Engine Control ECU Kit A6461505091 Automat
£170.95
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. A2045400150
Mercedes-Benz C E Class W204 W207 Fuse Distribution Box Interior A2045400150
£23.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A1679004511
Door Module Mercedes W205 W213 C253 Rear Left N/S Control Unit ECU A1679004511
£51.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A4479009808
Mercedes Vito W447 Fuse Box Relay Control Unit Electric Module SAM 4479009808
£189.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2115406445
Mercedes C219 Gearbox Electronic Control Unit Module A2115406445
£94.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A6549003200-1
Mercedes W177 W205 C213 C220d 654.920 150HP Engine Unit ECU A6549003200 Automat
£66.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A0009827723
Fuse Relay Mercedes W176 W204 W246 4-Pin Unit Black Hella A0009827723
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 259903137R
Mercedes Citan W415 Renault Kangoo Parktronic Parking Sensor Module 259903137R
£37.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2079012700
Mercedes A207 Convertible Roof Reinforcement Roll Bag Airbag Module A2079012700
£66.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A1775400630
Parking Sensor Wiring Mercedes W177 V177 Rear Bumper PDC Loom Cable A1775400630
£75.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. rhd-A2044402334
Door Wiring Mercedes W204 Front Left N/S Loom Cable Wire Harness A2044402334
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2469000012-3
Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012
£47.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2129007519
Mercedes W212 W218 Air Suspension Level Control Unit Module Airmatic A2129007519
£56.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2465402605
Mercedes-Benz A B W176 W246 Engine Temperature Sensor Wiring Cable Harness
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A0009006906
Mercedes C207 E220CDI BlueTec Adblue Module Control Unit ECU A0009006906
£18.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. rhd-A2055406109
Mercedes W205 Door Wiring Front Right O/S Harness Loom Cable A2055406109
£28.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2218707292
Mercedes W221 Keyless Entry Receiver Control Module Unit ECU A2218707292
£32.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2214405406
Mercedes W221 Wiring Loom Cable Harness Door Rear Right A2214405406
£18.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2229009710
Tuner Box Mercedes W176 W212 W218 Digital Audio Control Unit DAB ECE A2229009710
£94.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2535450140
Mercedes X253 Keyless Go Module Unit Bracket Mount Holder Support A2535450140
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A9015400631
Earth Ground Cable Mercedes Sprinter W901 Battery Wiring Loom Engine A9015400631
£18.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A1775408220
Door Wiring Mercedes W177 W247 Front Passenger Side Cable Harness A1775408220
£23.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2049061002-3
Mercedes W204 Radio CD Player COMAND Stereo Sat Nav Head Unit A2049061002
£142.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2128270228-IRS
Mercedes W212 Roof Antenna Shark Iridium Silver Metallic 775 E-Class A2128270228
£23.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2709000900-6
Mercedes C117 W176 A180 270.910 122HP Engine Control ECU Kit A2709000900 Manual
£284.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2475452301
Mercedes C118 W177 W247 Engine Compartment Fuse Box Bracket M260 A2475452301
£28.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. RHD-A2218700289
Mercedes W221 Dashboard Onboard Screen Monitor Navigation Display A2218700289
£47.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A1729002609
Mercedes SLK R172 Rear Fuse Box SAM Relay Control Unit Module A1729002609
£37.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2118705726
Air Module Mercedes W211 C219 Air System Control Unit ECU A2118705726
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2204451900
Mercedes W220 Central Gateway Control Unit Module ECU A2204451900
£28.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A1779069601-1
Fuse Box Mercedes W177 W247 Front Relay Engine Control Unit Module A1779069601
£104.95
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. A9105400805
Mercedes Sprinter W910 Fuel Tank Wiring Loom Cable Harness A9105400805
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A6396890379
Mercedes Viano Vito W639 Radio Fan Adapter Control Unit Module A6396890379
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2165406507
Mercedes CL C216 Door Electrical Wiring Harness Left Right N/O/S A2165406507
£56.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2218705687
Mercedes W221 Linguatronic Control Module Unit ECU English Version A2218705687
£70.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A6519007401-6
Mercedes SLK R172 250CDI 651.980 204HP Engine ECU Kit Ignition + Key A6519007401
£151.95
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. A2098200385
Voice Module Mercedes W164 W203 W209 W211 Control Unit Input System A2098200385
£161.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A6519009702-6
Mercedes W176 W246 A200d OM651.930 136HP Engine Unit ECU A6519009702 Manual
£75.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2124402707
Mercedes W212 Parktronic Parking Sensor Interior Protection Wiring A2124402707
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2239053605
Mercedes W206 W223 NFC Module Near Field Communication Control Unit A2239053605
£28.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2055405203
Mercedes W205 Negative Cable Battery Lead Minus Pole Wiring A2055405203
£18.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2749000800-7
Mercedes W205 C200 274.920 184HP Engine Control ECU Kit A2749000800 Automatic
£256.95
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. A2128270228-ING
Mercedes W212 Estate Roof Antenna Cover Shark Indium Grey Metallic A2128270228
£22.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2113231226
Mercedes-Benz E Class W211 Front Right Anti Roll Bar Clamp Bracket A2113231226
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2079003700
Mercedes C207 Door Module Rear Left N/S Control Unit ECU A2079003700
£13.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2043271240
Mercedes W204 C207 Headlight Headlamp Range Sensor Front Right O/S A2043271240
£37.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2229002921
Mercedes W205 W213 Head Unit Navigation Radio DAB High Control Unit A2229002921
£332.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A9064460442
Mercedes W639 Air Module System Control Unit ECU A9064460442
£61.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2049009907-1
Mercedes W204 Navigation Radio Player Head Unit Computer A2049009907
£237.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. A2045458401
Mercedes W204 Fuse Box Terminal Connection Unit A2115452301
£184.95
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. A0009822023
Mercedes W204 W212 W221 Battery Relay Module Unit A0009822023
Product currently unavailable
Part no. N000000004039
Mercedes ML GLC W164 X164 W204 Additional Backup Battery 12V 1.2Ah N000000004039
Product currently unavailable
Part no. A0065424218
Mercedes Sprinter W906 Turn Rate Sensor Module Control Unit A0065424218
Product currently unavailable
Part no. rhd-A2045400182
Mercedes W204 Engine Fuse Box Housing Relay Unit Module Cover Panel A2045400182
Product currently unavailable
Part no. A0009827008
Mercedes W204 W212 W222 Auxiliary Additional Generator Battery A0009827008
Product currently unavailable
Part no. A2139068601
Mercedes W205 W213 Actuator Drive Exhaust Flap Control Unit A2139068601
Product currently unavailable
Part no. A0025422619-1
Relay Mercedes W203 W204 W212 W639 W906 4-Pin Grey Hella 12V A0025422619
Product currently unavailable
Part no. rhd-A2075402750
Fuse Box Mercedes W204 S204 Front Relay SAM Control Unit Module A2075402750
Product currently unavailable
Part no. A1695450540
Fuse Box Mercedes W169 W245 Electrical Relay Control Unit A1695450540
Product currently unavailable
Part no. A9065454701
Mercedes W906 Fuse Box Relay Control Unit Electric Module A9065454701
Product currently unavailable
Part no. A2189007206
Headlight Module Mercedes C207 W212 Headlamp Adjust LED Control Unit A2129005324
Product currently unavailable
Part no. A9064461442
Mercedes Sprinter W906 ECU Control Unit Sensor Module A9064461442
Product currently unavailable
Part no. A0009820012
Mercedes W176 W212 W246 Voltage Converter Power Distributor Inverter
Product currently unavailable
Part no. A6395450301
Mercedes W639 Fuse Box Relay Control Unit Electric Module SAM A6395450301
Product currently unavailable
Part no. A2469002603
Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603
Product currently unavailable
Part no. A1728202100
Mercedes W176 W207 W246 USB Interface Multimedia Adapter Connector A1728202100
Product currently unavailable
Part no. A2035400031
Mercedes CLK W203 C209 Negative Battery Terminal Cable A2035400231
Product currently unavailable
Part no. A2045458132
Steering Lock Module Mercedes W204 W207 W212 Control Unit A2045458132
Product currently unavailable
Part no. A2218700092
Mercedes W203 W221 Rain Light Sensor Control Module A2218700092
Product currently unavailable
Part no. A0009061505
Mercedes W212 W213 W205 W218 Positive Battery Tray Clamp A0009061505
Product currently unavailable
Part no. A0045428718-1
Mercedes W203 W211 Parking Distance Sensor PDC Iridium Bright Silver
Product currently unavailable
Part no. A2049014504
Rain Sensor Mercedes W204 W212 Windscreen Control Unit A2049014504
Product currently unavailable
Part no. A0025422319-1
Mercedes Universal TYCO Relay Module 12V V23134-B52-X309 A0025422319
Product currently unavailable
Part no. A0061516201
Starter Motor Mercedes Sprinter W204 W211 W212 OM646 Diesel Engine A0061516201
Product currently unavailable
Part no. A2079010600
Rain Sensor Mercedes W204 W212 Light Solar Condensation Control Unit A2079010600
Product currently unavailable
Part no. A1698204085
Airbag Control Unit Mercedes W169 W245 System Module ECU A1698204085
Product currently unavailable
Part no. A1669056001
Battery Cable Mercedes W176 W246 Negative Lead Wiring Harness A1669056001
Product currently unavailable
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 .