Mini Countryman Hybrid Emergency Call System Issue

Have you checked the diagnostic codes? A malfunction in the emergency call system is serious due to its impact on car safety. Automotive electronics can be finicky. Confirming the diagnostic codes might help narrow down the issue.

Yeah, I pulled the codes. It's pointing to a potential fault in the wiring or connector for the emergency call module. Any experience with that specific error?

Given the symptoms and the diagnostic information you've provided, a defective cable or plug connection is certainly a plausible cause. I would recommend taking it to a qualified workshop for inspection and repair.

Took it to the shop. Turns out it was a defective plug connection as suspected. 95€ later and the SOS signal is back online. Thanks for confirming my suspicions!