Intermittent failure of BMW physical keys in cold weather.

1, wet buttons: In cold weather, fog will appear in the car, resulting in wet buttons. Wet keys will lead to poor circuit connection, which will lead to intermittent faults.

2. Key aging: As time goes by, BMW's physical keys will age, leading to intermittent failures. In cold weather, the elasticity and flexibility of the keys will be affected, resulting in the failure to trigger the keys normally.