Master additional battery alarm defective

That's a familiar story! I had something similar happen with my Master. It was like a ticking time bomb, not knowing when the alarm would just... not. I mean, did you check the simple stuff first, like, is the battery actually holding a charge, or is it just completely flat?

Yes, I've already performed a system diagnosis. The battery shows signs of aging, specifically a decreased capacity. My inclination is that a replacement is necessary but I wanted to confirm if my understanding is correct. Did your issue resolve after going to a workshop?

Ah, a full system diagnosis, you're way ahead of me! Yeah, confirmed! New battery fixed it like a charm. I really recommend a workshop visit but brace yourself: The whole thing cost me around 330€.

Thanks for the confirmation! I had anticipated a similar cost. I will schedule a workshop visit to replace the battery and address the alarm system malfunction. I greatly appreciate your assistance.