What is the construction and purpose of switches, controls, and ignition locks?

Switches, controls, and ignition locks are parts responsible for transmitting commands to the car's electrical and mechanical systems. A typical component consists of a housing, contacts, a connector, a button, a knob, or an ignition barrel, depending on the application. These parts are mounted in the vehicle cabin, most often at the steering column, on the dashboard, in the doors, or in the center console. Their task is to provide convenient and precise control of car functions.

What are switches, controls, and ignition locks used for?

Switches, controls, and ignition locks are used to operate lights, wipers, windows, mirrors, locks, heating, and to start the ignition. They are responsible for transmitting a signal to the appropriate module or receiver, so their efficiency directly affects driving comfort and safety. In the case of the ignition lock, cooperation with the steering lock, immobilizer, and starting system is also important.

What role does the control signal play in the operation of these components?

A control signal is information transmitted after activating a button, switch, or ignition lock. It is used to turn on, turn off, or change the operating mode of a specific vehicle system, for example, lights or windows. In practice, its correct transmission depends on the condition of the contacts, connector, wiring harness, and the part's compatibility with the car's electronics. Even slight wear on pins or the mechanism can cause intermittent function operation.

How to choose a switch or ignition lock for a specific car?

It is best to compare the OEM part number, interchangeable numbers, vehicle placement, and equipment version. It is also worth checking the transmission type if the component works with a specific locking system or control panel. For door and console elements, color, mounting side, and button layout are also important.

What symptoms indicate wear of switches, controls, or ignition locks?

Typical symptoms include no response when pressed, intermittent operation, mechanism sticking, lack of backlighting, or play in the button or knob. In the ignition lock, there may be difficulties turning the key, problems with the ignition position, or incorrect steering column unlocking. Such signals should be compared with the condition of the connectors and housing before purchasing a replacement part.

What should be checked before installing a used control element?

Before installation, it is good to assess the condition of the clips, pins, housing, and button surfaces, and compare the part with the old element. Check if the mounting points, plug type, and functions supported by the module match. For parts from door panels or consoles, ensure the element matches the interior trim and cooperating components.

Switches & Controls

At Global Parts automotive store we offer a wide selection of original used car parts including switches, controls and ignitions for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen and others. The switches, controls and ignitions we offer undergo quality control so that you can be sure that you are getting a top-class product.

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Switch Mercedes C238 Electronic Parking Brake Switch A2139056608

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Steering Wheel Switch Mercedes R171 W203 Multifunction Right O/S A1718209610

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Mercedes Vito Viano W639 Headlight Switch Unit Button Knob A6395450604

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Cruise Control Stalk Mercedes W203 CLK C209 Tempomat Switch Unit A0085452724

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Mercedes W204 W212 Switch Panel Right O/S Seat Adjustable Memory A2129059700

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Mercedes S205 Estate GLC C253 Seat Release Backrest Switch Left N/S A2059056611

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Mercedes W221 Headlight Headlamp Control Switch Panel Assembly A2215451404

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Seat Switch Mercedes W204 W212 Adjustment Memory Front Left N/S Door A2129059600

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Mercedes R172 Cabrio Centre Console Roof Top Switch Control Button A1726800619

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Mercedes R172 A/C Climate Heater Control Switch Module Unit Panel A1729002103

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Mercedes W176 Steering Column Switch Cluster Wiper Stalk Automatic A2469004208

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Mercedes W176 Steering Wheel Switch Multifunction Buttons A0999050700

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Mercedes W176 W204 W212 Steering Wheel Switch Multifunction Buttons A2185400162

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Mercedes W221 Switch Controller Panel Comand Sat Nav Navigation A2218705358

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Mercedes CLS C219 Front Seat Switch Right O/S Panel Adjustment A2198700210

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Seat Switch Mercedes C238 Front Door Heated Seat Right Switch A2139050404

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Mercedes SLK R172 Steering Column Cluster Switch Wiper Stalk Slip A1729004804

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Mercedes W205 C253 Steering Wheel Switches Multifunction Button A0999050200

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Mercedes Vito Viano W639 Headlight Switch Unit Button Knob A6395450204

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Mercedes Vito W447 Hazard Warning Light ESP Switch Panel Dashboard A4479053451

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Mercedes R172 Steering Wheel Contact Switch Control Plate A2184640817

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Steering Wheel Switch Mercedes W176 W204 Multifunction Button Trim A1725400262

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Mercedes S205 X253 Steering Column Cluster Wiper Stalk Switch A2059008412

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Headlight Switch Mercedes W907 W910 Dashboard Light Control Panel A9079053102

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Mercedes W204 Centre Console Switch Control Unit Seat Heating Button A2049059802

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Mercedes W204 Key Reader Ignition Lock Remote Control Unit Module A2079057101

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Mercedes W221 Window Lifter Switch Driver's Side Mirror Control A2218213751

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Mercedes-Benz ML W163 Alarm Monitor Motion Sensor Control Switch A1635408311

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Mercedes W213 C217 W222 W238 Remote Key Radio Alarm Fob Button A2229056109

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Steering Column Switch Mercedes W207 W212 Cluster Wiper Stalk Slip A2129008215

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Mercedes M W164 Button Locking Door Switch Black Right A2518201010

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Mercedes SLK R171 Wing Mirror Adjustment Adjust Switch Power Fold A1718204310

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Mercedes W164 Steering Column Switch Wiper Stalk Automatic Gearbox A1645458616

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Mercedes W205 Steering Wheel Contact Switch Control Plate A0994641500

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Control Panel Mercedes W213 Comand Audio Switch Unit Module A2139008310

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Mercedes W169 W245 Cruise Control Switch Stalk Indicator Lever A1695450004

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Mercedes SLK R171 A/C Air Conditioning Control Switch Panel A1718301385

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Mercedes W202 Steering Column Cluster Switch Wiper Indicator Stalk A2025402144

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Mercedes W177 Steering Column Indicator Wiper Stalk Switch Squib A1779004504

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Mercedes W212 Seat Heating Hazard Parktronic Control Switch Unit A2129052401

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Mercedes C253 Air Suspension Rear Control Switch Button Panel A2539056801

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Mercedes W211 Steering Column Switch Cluster Wiper Stalk Slip Squib A2115401262

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Mercedes W176 Steering Wheel Indicator Wiper Slip Ring Switch A2469008417

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Mercedes C238 Front Left N/S Switch Heated Ventilation Seat Unit A2139050604

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Parking Brake Switch Mercedes W205 Hanbrake Relase A2059051516

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Switch Mercedes C238 Door Switch Trunk Lid Opening A2229055011

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Mercedes W906 Sprinter Headlight Control Switch Light Lamp Unit A9069052401

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Mercedes Sprinter W901 Headlight Height Adjuster Switch Control Unit A0075451624

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Mercedes W176 M133 Steering Column Switch Cluster Wiper Stalk Squib A2469003920

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Mercedes W245 Steering Wheel Multifunction Switch Control Panel A1698207910

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Mercedes W205 Console Switch Panel Sat Navigation Knob Controller A2059006816

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Mercedes-Benz A-Class W168 Hazard Warning Switch Button Control A1688201210

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Mercedes W169 Key Reader Ignition Lock Remote Control Unit Module A1699051500

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Mercedes W177 Touch Pad Centre Console Switch Panel Touchpad Unit A2479004103

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Mercedes W168 Immobilizer Control Unit Module ECU A1688200426

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