Why is the remote control key's operating distance short?

[SanPiper]

Car remote control distance may be short due to the following reasons: 1. Insufficient battery power, simply replace the battery, or check if there is electromagnetic signal interference or shielding in the surrounding environment. Additionally, it is recommended not to adjust or replace components of the remote control yourself to avoid causing greater damage. 2. The effective distance of the remote control becomes shorter. If this issue occurs after the remote control has been used for a period of time, it may be due to insufficient battery power. If the distance varies, sometimes far and sometimes near, it could be due to environmental influences. If the remote control's main unit is shielded or interfered with, this problem may also occur. For example, the explosion-proof film applied to the vehicle may shield the remote control's main unit, and certain electrical devices in the car may cause interference.