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Nudge mode (or Nudging Service) is an elevator mode which when the door is held past a certain time, usually 30 seconds, and "nudges" closed while a buzzer, tone, or voice sounds, signaling to stand clear of the door.

Nudge mode actions prefix

Different elevator companies (with proprietary controllers) and even generic elevator component companies' controllers have different nudge mode prefix. Do not attempt to put the elevator in nudge mode unless you know the controller's nudge mode prefix. Nudge mode can cause serious injury to people who do not get out of doorway fast enough. During nudge mode, the call button on the floor where the elevator is nudging is disabled (simplex) or assign the other available elevators (in a group), and will not open up the doors. On some elevators holding the door open button from the elevator will bypass nudge mode .

  1. Buzzing and the doors force to close.
    1. Same method with floor indicators flashing.
    2. Same method works when the car call or hall call registered.
    3. Same method with door close buttons light up.
  2. Just plays a sound, and does not force close the doors[1].
    1. Same method with door close buttons light up.
    2. Same method but door close buttons does not light up.
    3. Mute when the doors are closing and resound when the doors reopen.
  3. All the registered car calls and hall calls cancelled (Can register after cancellation).
  4. Put the elevator out of service.
  5. Plays the chime repeatedly and door does not force close.
  6. Plays the announcement repeatedly when the door sensors triggered in a specific time and door does not force close.

Voice messages during nudge mode

  • "Please remove obstruction from door." - Kone elevators installed since 2000s[2][3]
  • "Please stand clear of the closing door" - 2000s onwards American Otis/custom Australian voice elevators
  • "Please remove obstacle from door." Some Liftronic elevators
  • "Please do not obstruct the door" - ThyssenKrupp in the UK[4]
  • "Door closing (beep x3) Door closing (beep x3)" - late-2000s onwards Mitsubishi (with door close button light up)[5]
  • "Door closing (continuous beeps until the doors are fully closed)" - late-1990s to 2000s Mitsubishi (without door close button light up)[6]
  • "請勿靠近升降機門 (cing2 mat6 kaau3 gan6 sing1 gong3 gei1 mun4) (Cantonese), 請不要靠近升降機門 (Qǐng bùyào kàojìn shēngjiàngjī mén) (Putunghua), Stand back from the doors (English)" - elevators installed in the Hong Kong Mass Transit Railway (MTR) stations.[7][8]

Videos

Trivia

  • Nudge mode cannot bypass the loading sensor, which means it doesn't work when the elevator is overloaded.
  • Many people get nudge mode confused with a door malfunction. The difference though is that a door malfunction is:
    • when the elevator car starts moving with the doors open (also known as unintended car movement).
    • when the doors behave improperly (fail to close or open)
  • Nudge mode activates frequently if a crowded shopping mall or metro stations with a lot of people using the one and only passenger elevator.
  • Elevators in parking garages/car parks tend to have a faster nudge timer.
  • The timing of nudging service may be reduced automatically depends on the loading of the lift car.
  • In Hong Kong, nudge mode is prohibited on elevators with Barrier Free Access (BFA) standard.

Notes and references

Schindler lifts (Dewhurst fixtures 2) "This elevator only serves two floors."
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Elevator Special Modes 

Anti-Crime Protection (ACP)Attendant service (AS)Earthquake emergency return (EER)Emergency power operation (EPR) • Fire service mode (EFS) (Fireman's elevator) • Independent service (ISC) • Inspection service (INS) • Medical emergency/Code Blue service (EHS)Nudge modeOut of service • Peak times modes (Up peak (MIT) • Down peak) • Pet modeSabbath service (SHO)


See Also: List of Elevator and Escalator Brands • Elevator Fixtures Guide


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