Hi there, could someone help please ? My 2016 B class's command module (entertainment etc) is slow to start-up - sometimes the radio/nav doesn't come on until 30 mins into a journey. It seems better when it is warm outside ? maybe 10 mins in this case. I replaced the main battery a few weeks ago as I had starting issues and all is fine with that now, my stop/start even works now. I checked the voltage on the auxiliary batter and it sits ~ 13.4 v. I tried a replacement auxiliary battery from Screwfix (~ £15) but to no avail !
Do I need to fork out a fortune on a new auxiliary battery, as I said it seems OK and holds charge !?
Do I need to fork out a fortune on a new auxiliary battery, as I said it seems OK and holds charge !?
