My DCM disconnection odyssey.

Interesting that in the photos that @BRITUS posted of the fuse box and its legend the drawing shows a 7.5 amp Mayday fuse. There doesn’t seem to be a corresponding fuse in the fuse box.

 

All of these are excellent questions. If you recall, iPhone 1 came out in 2007 so DCM in 2010 would be contemporary of that tech (i.e., 2/3G and expensive). While Blackberry existed prior to that, data over cell was prohibitively expensive. While Toyota absolutely had technical means to do so, it would have been clearly unprofitable. The main reason we have deluge of these privacy invading data collection modules in modern cars is because both data service and cell modem hardware are very cheap at scale. Even with that cheapness, it is enabled by people paying for connected services.

While this is not an absolute rule - anything prior 2015 is safe from snooping.

BMW also had in-car cellphones as early as 92. This does not mean that data connection over cell was feasible at that point.

 

Don't know off-the-top of my head what it corresponds to but no SOS button and MAYDAY fuse means no cellular radio.

 

Where can I get the harness. I personally don’t give a fuck if they find out I did that. It’s my car and they can go eat shit.

 

You can get the harness here.

https://www.autoharnesshouse.com/store/AHH-DCM77