The 2016–2026 GLC (incl. GLK) uses the same key setup, so everything on this page applies to those years too. The full picture is on the Mercedes-Benz GLC (incl. GLK) key guide.
2020 Mercedes-Benz GLC (incl. GLK): key facts
- Key type
- Smart / proximity key
- Push-to-start
- Yes
- Transponder chip
- FBS4 (DAS4)
- Programming
- Dealer-only (we'll tell you before you spend anything)
- All keys lost
- We can originate new keys on site
GLC (X253) replaced the GLK for MY2016 and is FBS4 (the X253 is explicitly documented as FBS4): added/replacement keys are effectively dealer-only — VIN-coded order and Xentry enablement with the car present.
Same key system as the 2016–2026 GLC
Mercedes-Benz kept the GLC's key system unchanged across 2016–2026, so everything about replacing a 2020 key — blanks, programming, and what happens if every key is lost — matches the rest of that run. The full year-by-year breakdown lives in our Mercedes-Benz GLC key guide.
For this generation, added or replacement keys go through the dealer — we say that up front rather than charge you to find out. Call (213) 577-1366 and we'll tell you honestly whether a mobile locksmith or the dealer is the right move for your situation.
We cover all these cities
- Acton
- Agoura Hills
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- Alhambra
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- Arcadia
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- Artesia
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- Baldwin Park
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- Beverly Hills
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- Camarillo
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- Carson
- Cerritos
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- City of Industry
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- Covina
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- Culver City
- Diamond Bar
- Downey
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- East Los Angeles
- El Monte
- El Segundo
- Encino
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- Glendora
- Granada Hills
- Hacienda Heights
- Hawaiian Gardens
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- Hidden Hills
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- La Habra Heights
- La Mirada
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- Lakewood
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- Panorama City
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- Reseda
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- Santa Monica
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- Sherman Oaks
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- Simi Valley
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- South Pasadena
- Stevenson Ranch
- Studio City
- Sun Valley
- Sylmar
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- Temple City
- Thousand Oaks
- Toluca Lake
- Topanga
- Torrance
- Valencia
- Valley Glen
- Valley Village
- Van Nuys
- Ventura
- Vernon
- View Park–Windsor Hills
- Walnut
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- West Covina
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- West Hollywood
- Westlake Village
- Westmont
- Whittier
- Willowbrook
- Winnetka
- Woodland Hills
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.