The Combination Switch Assembly 3493104420, is a critical driver control interface integrated into the automotive steering column. It centralizes the operation of multiple vehicle functions, such as headlights, turn signals, wipers/washers, and cruise control, into a single, ergonomic module. This direct-fit, high-quality replacement part ensures seamless vehicle control, driving convenience, and safety.
Key Features
Precise OEM Fit
Manufactured to strict OE specifications, part 3493104420 is a plug-and-play replacement, guaranteeing perfect compatibility and alignment with the steering column housing without requiring modifications.
01
Durable Construction
Utilizes high-strength, impact-resistant engineering plastics for the housing and levers, providing excellent resistance to wear, UV exposure, and temperature fluctuations. Metal contacts are designed for optimal conductivity and longevity.
02
Reliable Electrical Performance
Features robust internal circuitry with soldered connections and sealed interfaces to prevent moisture ingress, ensuring stable signal transmission and preventing electrical failures.
03
Ergonomic & Intuitive Design
The control stalks are designed for easy reach and provide clear tactile feedback, allowing drivers to operate functions confidently without looking away from the road.
04
Rigorous Quality Assurance
Produced under stringent automotive quality standards. Each unit undergoes comprehensive functional and durability testing to ensure 100% performance and reliability.
05
Technical Specifications
|
Item |
Specification |
|
Product OEM Number |
3493104420 |
|
Product Type |
Steering Column Combination Switch |
|
Primary Functions |
Headlight Control (Low/High Beam, Front/Rear Fog Lights), Turn Signals, Front Wiper & Washer Control, Cruise Control (Set/Resume/Cancel) |
|
Operating Voltage |
12V DC |
|
Connector Type |
Multi-pin, vehicle-specific electrical connectors |
|
Housing Material |
High-impact, UV-resistant engineering plastic |
Structural Composition & Diagram
Main Control Stalks
Two primary multi-function stalks (typically left for lights/turn signals, right for wipers/cruise control) with rotary switches and push/pull functions.
01
Switch Housing
Durable casing that encases the internal circuitry and provides a secure, precise mounting interface to the steering column.
02
Electrical Connectors
Sealed, color-coded multi-pin connectors that plug directly into the vehicle's main wiring harness.
03
Internal Mechanism
Contains a series of reliable contact boards, micro-switches, and cams that translate the driver's lever movements into precise electrical commands.
04
Mounting Bracket & Hardware
Includes integrated clips, alignment guides, and screw holes for a secure, rattle-free installation.
05
Compatible Vehicle Applications
Mercedes-Benz: C-Class (W205, 2014-2021), E-Class (W213, 2016-2023), GLC (X253, 2015-2022)
Installation and Usage Notes
Safety First: Before starting any work, disconnect the vehicle's negative battery terminal and wait at least 3 minutes to allow any residual power in the system's capacitors to discharge.
Removal: Carefully remove the steering column shrouds and trim pieces to access the old combination switch. Note the routing of the wiring harness. Depress the locking tabs to disconnect all electrical connectors from the switch.
Installation: Align the new combination switch (3493104420) precisely into its mounting position on the steering column. Ensure all mounting clips engage fully and any screws are tightened to the specified torque. Reconnect all electrical connectors until a firm click is heard.
Function Test: Reconnect the battery. Before reassembling all trim panels, perform a comprehensive function test.
Verify the operation of: headlights (low/high beam, front/rear fog lights), turn signals (left/right), hazard warning lights, front wipers (all speeds, intermittent mode, washer), and cruise control functions. Ensure no warning lights (especially airbag or SRS lights) remain illuminated on the instrument cluster.
Packing, Storage, Handling and Transportation
The Combination Switch 3493104420 is individually packaged in a sealed anti-static bag, placed within a protective, form-fitting cardboard carton. The product must be stored in its original packaging in a clean, dry, and temperate environment. Avoid exposure to direct sunlight, excessive humidity, dust, or strong electromagnetic fields. Do not stack packages too high to avoid crushing. During handling and transportation, avoid dropping, violent impacts, or compression. Protect the product from rain and direct sunlight.
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