Twitter vid and tagging Mercedes and the dealer that’s pissed you about might be a good place to start, I’d bet the cables are difficult and time consuming to access and check that’s why it’s not done, and then dealers act all surprised and say that’s the first one I’ve ever known to fail
The cables are a bit fiddly to replace apparently and come as a pack of six. Been quoted 4.5 hours but been told to leave car for 2 days.
The cables look like they are easy enough to access for inspection though, but maybe there are some internal bits that make it impossible.
Mechanism with o/s cable:
This is the n/s one that triggers me. Must’ve been visibly worn at time of purchase. Can’t be right they exonerate themselves from all responsibility and shift the liability completely into the customer.