{
  "$schema": "robofaults-fault-record/v0",
  "kind": "symptom",
  "brand": "dreame",
  "page_en": "https://robofaults.com/dreame/lds-error/",
  "page_es": "https://robofaults.com/es/dreame/error-del-sensor-lds/",
  "slug": "lds-error",
  "slug_es": "error-del-sensor-lds",
  "device_type": "vacuum",
  "title_en": "Dreame LDS error (laser sensor abnormal)",
  "title_es": "Error del sensor LDS en Dreame (láser anormal)",
  "severity": "warn",
  "severity_note_en": "robot loses mapping and navigation and stops where it stands until the turret reads clean",
  "severity_note_es": "el robot pierde el mapa y la navegación y se detiene donde está hasta que la torreta vuelva a leer bien",
  "series": [
    "D9/Z10 Pro/L10 Pro",
    "W10",
    "D10 Plus/D10s",
    "L10s/L20 Ultra",
    "X30/X40/X50/L40"
  ],
  "tools_en": "soft dry cloth",
  "tools_es": "paño suave y seco",
  "time_min": 10,
  "difficulty": "easy",
  "safety": "none",
  "safety_note_en": "",
  "safety_note_es": "",
  "meaning_en": "\"LDS abnormal\" means the <b>spinning laser turret is jammed, dirty or blocked</b>, so the robot can't map. Dreame's official fix: update the firmware, free the turret and its cover, and clean the laser windows.",
  "meaning_es": "«LDS anormal» significa que la <b>torreta láser giratoria está atascada, sucia o bloqueada</b> y el robot no puede mapear. La solución oficial de Dreame: actualiza el firmware, libera la torreta y su cubierta y limpia las ventanas del láser.",
  "causes": [
    {
      "title_en": "Turret jammed by hair or debris",
      "title_es": "Torreta atascada por pelo o suciedad",
      "detail_en": "The official check is whether the LDS is \"stuck by foreign objects\" — hair and grit under the spinning turret stall its little motor, especially after runs under furniture.",
      "detail_es": "La comprobación oficial es si el LDS está atascado por objetos extraños — el pelo y la arenilla bajo la torreta giratoria frenan su pequeño motor, sobre todo tras limpiar bajo los muebles.",
      "likelihood": "most_common"
    },
    {
      "title_en": "Dusty laser emission and receiving windows",
      "title_es": "Ventanas de emisión y recepción del láser sucias",
      "detail_en": "Dreame's articles name the two holes precisely — if the emission or receiving window is coated in dust, the laser can't fire and read, and the alert repeats on open floor.",
      "detail_es": "Los artículos de Dreame nombran los dos orificios con precisión — si la ventana de emisión o la de recepción están cubiertas de polvo, el láser no puede disparar y leer, y la alerta se repite en suelo despejado.",
      "likelihood": "common"
    },
    {
      "title_en": "LDS cover stuck after a bump",
      "title_es": "Cubierta del LDS atascada tras un golpe",
      "detail_en": "The turret's protective cover doubles as a pressure sensor. Officially it must move freely front-back and left-right and rebound when tapped — wedged under a sofa once, it can stay compressed.",
      "detail_es": "La cubierta protectora de la torreta hace también de sensor de presión. Oficialmente debe moverse libre adelante-atrás y a los lados y rebotar al tocarla — tras encajarse una vez bajo un sofá, puede quedarse comprimida.",
      "likelihood": "common"
    },
    {
      "title_en": "Outdated firmware",
      "title_es": "Firmware desactualizado",
      "detail_en": "Dreame's official step 1 for LDS alerts is checking for a firmware update — several LDS false alarms have been fixed in software.",
      "detail_es": "El paso 1 oficial de Dreame para las alertas del LDS es buscar una actualización de firmware — varias falsas alarmas del LDS se han corregido por software.",
      "likelihood": "uncommon"
    },
    {
      "title_en": "Turret hardware failure",
      "title_es": "Avería del hardware de la torreta",
      "detail_en": "An LDS that stays silent or visibly wobbles after cleaning, with current firmware, points at the module itself — officially a case for after-sales with photos or a short video.",
      "detail_es": "Un LDS que sigue sin girar o baila visiblemente tras la limpieza, con el firmware al día, apunta al propio módulo — oficialmente un caso para posventa con fotos o un vídeo corto.",
      "likelihood": "rare"
    }
  ],
  "steps": [
    {
      "title_en": "Update the firmware first",
      "title_es": "Actualiza primero el firmware",
      "detail_en": "In the app, check for a robot firmware update and install it — this is Dreame's official first step for LDS alerts.",
      "detail_es": "En la app, busca una actualización de firmware del robot e instálala — es el primer paso oficial de Dreame para las alertas del LDS."
    },
    {
      "title_en": "Free the turret",
      "title_es": "Libera la torreta",
      "detail_en": "Power off, then gently rotate the LDS turret with a finger and remove any hair or debris around it until it spins freely.",
      "detail_es": "Apaga el robot, gira suavemente la torreta del LDS con un dedo y retira el pelo o la suciedad de alrededor hasta que gire libre."
    },
    {
      "title_en": "Test the cover's rebound",
      "title_es": "Prueba el rebote de la cubierta",
      "detail_en": "Gently press and tap the LDS cover — it must move freely in every direction and spring back; pick out anything wedged around it.",
      "detail_es": "Presiona y toca suavemente la cubierta del LDS — debe moverse libre en todas direcciones y rebotar; saca lo que esté encajado alrededor."
    },
    {
      "title_en": "Clean the laser windows",
      "title_es": "Limpia las ventanas del láser",
      "detail_en": "Wipe the laser emission and receiving holes and the whole turret with a soft, dry cloth — no liquids.",
      "detail_es": "Limpia los orificios de emisión y recepción del láser y toda la torreta con un paño suave y seco — sin líquidos."
    },
    {
      "title_en": "Restart and remap-test",
      "title_es": "Reinicia y prueba el mapeo",
      "detail_en": "Restart the robot and run a short clean on open floor, watching that the turret spins and the map draws.",
      "detail_es": "Reinicia el robot y haz una limpieza corta en suelo despejado, comprobando que la torreta gira y el mapa se dibuja."
    },
    {
      "title_en": "Escalate with evidence",
      "title_es": "Escala con pruebas",
      "detail_en": "If the alert survives all of the above, contact Dreame after-sales with clear photos or a short video of the LDS area — the official request for this fault.",
      "detail_es": "Si la alerta sobrevive a todo lo anterior, contacta con el posventa de Dreame con fotos claras o un vídeo corto de la zona del LDS — la petición oficial para este fallo."
    }
  ],
  "parts": [],
  "sources": [
    {
      "label_en": "Dreame Support — Robot vacuum and mop, LDS abnormal",
      "label_es": "Soporte de Dreame — Robot aspirador y fregador, LDS anormal",
      "url": "https://dreametech.zendesk.com/hc/en-us/articles/55085025594777-Robot-Vacuum-and-Mop-LDS-Abnormal",
      "kind": "official"
    },
    {
      "label_en": "Dreame Support — L40s Pro Ultra, LDS sensor malfunction",
      "label_es": "Soporte de Dreame — L40s Pro Ultra, fallo del sensor LDS",
      "url": "https://dreametech.zendesk.com/hc/en-us/articles/54826363212569-L40s-Pro-Ultra-LDS-Sensor-Malfunction",
      "kind": "official"
    },
    {
      "label_en": "Dreame Forum — L40 Ultra laser distance error, official after-sales reply",
      "label_es": "Foro de Dreame — Error de distancia láser del L40 Ultra, respuesta oficial del posventa",
      "url": "https://us.forum.dreametech.com/forum.php?mod=viewthread&tid=9342",
      "kind": "community"
    }
  ],
  "confidence": "official",
  "last_verified": "2026-07-10"
}