Description
Restore reliable electrical system performance in your Mercedes‑Benz with the authentic OEM relay A0035421619 / A 003 542 16 19. This integral component is used in key systems like air suspension (AIRMATIC), leveling/height control, and main fuse‑box assemblies for various Mercedes models. ebay.co.uk+2AUTODOC+2
Key Functions & Fitment:
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OEM part for Mercedes‑Benz fuse box relay slot B/D/E (70 A rating) as found in models like W177 (A‑Class), W246 (B‑Class) and W222 (S‑Class). GlobalParts+1
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Controls large current loads (main current relay) to supply systems requiring high amperage e.g., leveling pumps, AIRMATIC compressors. Spareto
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Direct fit: No modifications required—just plug into original socket.
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Built to OEM specs for durability and correct electrical characteristics.
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If your system shows codes relating to “relay faults”, “height/leveling pump not active” or “fuse box relay slot B/D/E”, replacing this relay can restore proper functionality.
Why Use the Genuine Relay?
Using an OEM‑specified relay ensures your vehicle’s systems operate as designed by Mercedes‑Benz—avoiding failures due to undersized aftermarket components, incorrect ratings or poor build quality. Whether it’s the level control system or main fuse‑box high‑current path, an authentic relay keeps system integrity.
Installation Notes:
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Confirm part number on your existing relay (A0035421619 / A003 542 16 19) before ordering.
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Disconnect the battery before replacing relays to prevent short circuits.
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After installing, clear any related fault codes via diagnostics and test the affected system (e.g., suspension height, pump activation, fuse‑box slot B/D/E behavior).
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For best results, inspect associated wiring, fuse box socket and mounting for corrosion or damage.
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