Mercedes RF issues and electronics?s
 

So I have a 2012 ML 350. In one place in Boulder my key fob fails. Nada. Leave the 7-11 and it works perfectly.

Later my nav radio and cell loose the ability to transmit sound. Have to reboot the navigation. Pita. Any ideas?

Mercedes says cc please.

Well that's less irritating than my new issue....on the above, I can live with it.

Since my UHaul install of a brake booster and trailer hitch. My proximity side view alarms are disabled, my horn alert for arming the alarm is disabled, the downhill brake assist has fuzzed out.....I've read that the low voltage lighting system is sensitive to disruption...

My thinking the electrical tap from the power booster is fuzzing up the works.....any comments?

You need a Mercedes scan tool. Whatever the equivalent to Volkswagen VCDS is.