xsports Posted May 15 Share Posted May 15 Today, I saw a pop-up notification stating "SOS Inoperative." Despite consulting the handbook, I was unable to find any relevant information. Could you please advise me on the necessary course of action? Thank you. Quote Link to comment Share on other sites More sharing options...
BENZE220AMG Posted May 15 Share Posted May 15 Is it safe to assume that you are referring about the MY 2019 E300 Coupe? Quote Link to comment Share on other sites More sharing options...
xsports Posted May 15 Author Share Posted May 15 Apologies for my mistake. Quote Link to comment Share on other sites More sharing options...
Rudy7831 Posted May 15 Share Posted May 15 The occurrence is contingent upon the car's inability to get a cellular signal. Were you situated in an unusual place? Quote Link to comment Share on other sites More sharing options...
xsports Posted May 15 Author Share Posted May 15 Understood. I was just in route to B&Q. Quote Link to comment Share on other sites More sharing options...
Rudy7831 Posted May 15 Share Posted May 15 It is possible that there was a localised mast outage. I will attempt to test it again tomorrow, and if it functions properly, it is probable that the issue was caused by an external factor unrelated to the automobile. If the current solution is not effective, you will need to investigate more deeply. Quote Link to comment Share on other sites More sharing options...
BENZE220AMG Posted May 15 Share Posted May 15 Truly, there is no need for concern if the problem was just momentary. If the issue pertains to navigation, it might perhaps be a first sign of a malfunctioning GNSS antenna. However, it is my belief that the cellular antenna is not as susceptible to failure. On a cellular phone, any accessible network may be used for emergency calls. However, is this SOS alert specifically referring to the connection between the cellular antenna and the mobile base emergency call server? I am uncertain, but as far as I understand, the accident-related data is sent to the MB server rather than being immediately relayed to the emergency contact centre. The phone call itself may function OK, but the crash data and other related information will not be sent across a "foreign" cellular network. If a 2019 automobile is experiencing a cellular coverage difficulty, the Mercedes Me services it has should also stop functioning. Test this. Regrettably, I no longer possess the means to get the latest technical bulletins due to their exorbitant cost. However, there have been several recalls, and it is my belief that a software update sent wirelessly should have resolved any issues for a 2019 vehicle. Quote Link to comment Share on other sites More sharing options...
bl52krz Posted May 15 Share Posted May 15 I just had the identical problem with a 2017 C43 AMG. Have you discovered the root cause and identified a solution to this problem? The Mercedes-Benz dealer in my area has indicated that the problem might perhaps be related to software, but they are unsure. They are requesting that I schedule a diagnostic check, which will cost £165 plus VAT. The vehicle comes with an authorised used warranty, but I am usually suspicious about whether electronic defects will be included in the coverage. Thank you Quote Link to comment Share on other sites More sharing options...
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