Engine won’t start. E350 V10

[Tline2]

Have a2012 thor C with v10, when trying to start motor,all lights on but car/lock symbol is flashing motor won’t turn over, replace #75 fuse and will start. But next time will blow fuse, now have an engine light on? Can replace with 25a fuse and then will start, but still engine light on. Any ideas?

[rynosback]

Take it to a dealer or a shop that is equipped to diagnose and fix it. Vehicles are getting more complicated every year. A friend of mine that owns a shop just spent another 30k plus monthly subscriptions to work on the 2018 models and up. And this does not include the THOUSANDS he has spent on other scanners and monthly subscriptions.
A fuse is blowing so you are having some sort of short causing the fuse to blow.

[Lt Keefer]

Throw a scangauge or other code reader on it and pull the dtcs. It may be a simple fix.