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Navimow X4 Error Code 9105: Program Crash
Error 9105 indicates that the X4’s internal software encountered a critical error and stopped functioning properly. Use the short recovery sequence once, then escalate a recurring crash.
Reviewed by the RobotMower.help editorial team. Independent guidance based on the manufacturer source linked below.
Quick answer
Navimow defines code 9105 as “Program Crash.”
Press STOP to clear the code. If it persists, restart the mower, then place it on the charging station for stable power and another system check. Contact support if 9105 continues.
Illustrative troubleshooting image; not a manufacturer product photo.
Follow this diagnostic sequence
- Record what happened. Note whether the crash occurred during startup, mowing, docking, charging, mapping, or an app command.
- Press STOP. Give the mower time to respond and see whether the code clears.
- Restart once. Complete a normal shutdown and startup rather than repeatedly power cycling.
- Place the mower on the charging station. Confirm a stable physical connection and allow the system to settle.
- Run only a short observed check. If 9105 returns, stop the reset loop and prepare the support information.
Repeated crashes are not normal operation
Do not keep restarting an unstable mower and sending it back into an unattended task. A recurring program crash needs manufacturer diagnosis, particularly if it follows a firmware update or happens at the same point in every task.
What this code actually tells you
A program crash is a software failure state, but the code does not tell the owner which internal process stopped. Stable power and a clean restart can recover a temporary condition. A repeated code suggests the problem needs logs or service information available to Navimow support.
Do not install unofficial firmware or attempt to access internal software. Record the current firmware version shown in the app if it is available, but do not claim the update caused the error merely because the timing is close.
Why we are not combining every 91xx code
Several X4 codes currently share Navimow’s “program crash” wording, but owners search the exact code shown on their mower. This guide stays specific to 9105 and avoids guessing about differences Navimow has not documented.
Before contacting Navimow support
Prepare the mower serial number, the exact date and time the error occurred, and a screenshot or video showing the message. Also note whether the mower was mowing, docking, charging, starting, or communicating with the app when the code appeared.
Frequently asked questions
No. Start with the published clear, restart, and docking sequence. Persistent crashes require support diagnosis, not an automatic replacement conclusion.
Navimow’s 9105 procedure does not instruct owners to perform a factory reset. Avoid erasing settings unless support directs it.
Record the firmware version and timing for support. The timing is useful evidence but does not prove the update caused the crash.
Related troubleshooting guides
Source and independence note
Primary source: Segway Navimow support documentation. RobotMower.help is independent and not affiliated with Segway Navimow or another mower manufacturer. Never open sealed electronics or bypass the mower’s safety systems.