Certainly! The Mercedes-Benz error code B1FBD54 specifically refers to a "Control Unit 360° Camera Malfunction" where calibration is missing. This typically occurs after a camera replacement, windshield swap, or software glitch that wipes the system's alignment data.

5.2 Step‑by‑Step

1. Verify code – Read all stored codes. Clear and cycle ignition. See if B1FBD54 returns immediately.
2. Monitor live data – XENTRY → SAM → Actual values → “Left front door contact”. Manually open/close the door. If value does not change → proceed.
3. Physical inspection – Open left front door. Check rubber boot between door and A‑pillar for cracks.
4. Measure at SAM connector

   Windshield Replacement: If the windshield is replaced without recalibrating the multi-function camera (MFK).

   Clean All Lenses: Use a microfiber cloth to ensure no dirt or residue is blocking the view.

   Unlike some faults that indicate a broken wire or a smashed lens, B1FBD54 is primarily a software and configuration error. The 360° Camera Control Unit (A40/6) is alive and communicating, but it has lost the essential alignment data needed to "stitch" the four camera images into a single bird’s-eye view.

   • Read all modules (BCM, gateway, SAM, ABS, airbag, infotainment). Often manufacturer codes come with companion faults that reveal the subsystem.