Code 2105 is a high battery-temperature warning. Stop mowing, move the X4 out of direct sun, and let the battery cool before clearing the alert. Navimow identifies error 2105 as “Battery Temperature Too High.” Move the mower to shade, keep it within an ambient temperature of 0–40°C (32–104°F), wait for the battery to cool, then press STOP to clear the code. Do not disassemble the battery. Stop the mowing task. Do not keep restarting the blades while the warning is active.Move the X4 into shade. Keep it away from hot paving, enclosed sheds, or direct afternoon sun.Allow a complete cool-down. Navimow specifies an ambient operating range of 0–40°C (32–104°F). Cooling time varies with conditions.Press STOP once the mower is cool. This is the manufacturer-specified step for clearing the error.Resume only if the code stays cleared. If 2105 returns in normal temperatures, stop and gather the support details listed below. The mower monitors battery temperature to protect the pack and electronics. Hot weather, direct sun, and heat retained by hard surfaces can contribute to an over-temperature condition. The error does not, by itself, identify which component caused the heat. Avoid guessing or bypassing the protection.If the mower becomes unusually hot while docked, disconnect power only if it is safe to do so and contact support. For broader dock-related checks, see our charging problems hub.