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Genuine Mercedes 202-820-21-10 Door Contact Switch

Manufacturer

Genuine Mercedes

<h3>What Are Genuine Mercedes-Benz Parts?</h3><p>When you invest in a Mercedes-Benz, you are choosing a vehicle engineered to exacting standards — and maintaining that standard means using parts built to the same specification. <strong>Genuine Mercedes</strong> parts are OEM (Original Equipment Manufacturer) components produced or authorized by Mercedes-Benz itself, carrying the same design tolerances, materials, and quality benchmarks as the parts that rolled off the factory floor with your vehicle.</p><p>Unlike aftermarket alternatives, Genuine Mercedes-Benz parts are developed alongside the vehicles they serve. Engineers who design the car also oversee the parts program, ensuring that every component — from interior trims to underhood hardware — integrates seamlessly with your specific model, year, and configuration. This factory-level precision is what separates a genuine part from a &quot;close enough&quot; substitute.</p><h3>A Legacy of Engineering Excellence</h3><p>Mercedes-Benz has been synonymous with automotive innovation for well over a century. That engineering heritage extends directly into the brand&apos;s OEM parts program. Every Genuine Mercedes component is designed to preserve the performance, safety, and longevity characteristics that made the vehicle worth owning in the first place. From the C-Class to the S-Class, AMG performance variants to G-Wagen SUVs, the parts catalog spans thousands of components across the entire model lineup.</p><p>Genuine Mercedes parts are tested to the same rigorous standards as the vehicles themselves — including stress testing at high speeds and in demanding conditions — so owners can trust that a replacement part will perform exactly as the original did on day one.</p><h3>Exterior Integrity: Bumper Trim and Body Components</h3><p>One of the most visible areas where part quality truly matters is the exterior. A vehicle&apos;s bumper system is not merely cosmetic — it is a safety-critical assembly that absorbs impact energy and protects passengers, pedestrians, and the underlying structure of the car. <a href="/7906-genuine-mercedes-bumper-trim-12245">Genuine Mercedes Bumper Trim</a> parts are precision-molded to match the exact contours, finishes, and attachment points of the original factory components, ensuring a flush, factory-correct appearance after any repair or restoration.</p><p>Whether you are refreshing a daily driver after a parking lot scrape or restoring a classic Mercedes to showroom condition, sourcing <a href="/7906-genuine-mercedes-bumper-trim-12245">OEM bumper trim from Genuine Mercedes</a> ensures the replaced piece will align perfectly, resist premature wear, and maintain the aesthetic integrity the brand is known for. Aftermarket trim pieces frequently suffer from poor color matching, inconsistent fitment, or inferior materials — none of which are concerns when choosing a factory-spec part.</p><h3>Why Choose Genuine Over Aftermarket?</h3><ul><li><strong>Perfect Fit:</strong> Engineered to the exact tolerances of your specific model and year — no modifications or adaptations required.</li><li><strong>Material Integrity:</strong> Manufactured from the same materials specified in the original build, preserving structural and aesthetic performance.</li><li><strong>Safety Assurance:</strong> Safety-relevant components like bumper systems are tested against Mercedes-Benz standards, not generic benchmarks.</li><li><strong>Warranty Compatibility:</strong> Using genuine OEM parts helps preserve manufacturer warranty coverage on applicable vehicles.</li><li><strong>Long-Term Value:</strong> Proper fitment and material quality mean fewer repeat repairs and a better resale value for your vehicle.</li></ul><p>For Mercedes-Benz owners who refuse to compromise on quality, Genuine Mercedes OEM parts represent the gold standard in replacement and restoration components.</p>

Part Number

202-820-21-10
09/10/2036 10:02 PM
Sale Price

$8.02

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Fitment guaranteed

Product Details

The Genuine Mercedes-Benz Door Contact Switch (part number 202-820-21-10) is an OEM replacement switch that monitors door open/closed status on your vehicle. This switch is mounted in the door jamb and activates when the door opens, triggering the interior lights and alerting the vehicle's computer system to the door's position.

Key Features:

  • Genuine Mercedes-Benz OEM part ensures perfect fit and reliable function
  • Direct replacement for worn or failed door jamb switches
  • Controls interior dome light operation when doors open and close
  • Provides door ajar signal to instrument cluster and vehicle computer
  • Manufactured to Mercedes-Benz original equipment specifications

This door contact switch is commonly found on Mercedes-Benz C-Class (W202) models and other vehicles using this part number. When this switch fails, symptoms may include interior lights not illuminating when doors open, door ajar warnings staying on, or dome lights remaining on constantly. Replacing a faulty door switch restores proper lighting function and eliminates false warning messages.

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