commaai / commaai/panda

Siren doesn't play when cable gets disconnected

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Description

My expectation is that the loud siren should play instantly on power loss.

In reality:
1. Steering torque is lost instantly - kinda to be expected, since the relay gets closed.
2. There is a faint beep after about 100ms.
3. Sometimes (1 out of 3) the loud siren kicks-in after several seconds and lasts ~1s before gets cut off

https://github.com/user-attachments/assets/a9282c32-dd31-467c-88e7-c0001113f215

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