Understanding & Fixing Mercedes-Benz Error B1FBD54: "The charging flap lock is faulty"
| Attribute | Value | |-----------|-------| | | B1FBD54 | | Description | Left front door contact switch: No signal edge | | Status | Current or stored | | Monitor criteria | The switch state does not change from open to closed (or vice versa) within 500 ms after a door operation command. | | Associated symptoms | – Interior lights stay on or never turn on – Central locking double‑pulse or failure to lock – “Door open” warning on instrument cluster while driving – Power window one‑touch up/down disabled |
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It is often seen alongside (Control Module for 360° Camera is faulty/Not configured) or A28600 (Multifunction camera calibration lost). Causes of the B1FBD54 Error