I have had my SyncUp for a few months and it was working fine. Then suddenly it showed my battery was dead and it turned out my alternator had to be replaced ($650). Now the SyncUp won't work at all - it is offline even when the lights are on, despite repeated attempts to unplug it and get it to work. Most importantly, I am now seeing a number of concerns from people that their batteries and alternators started died shortly after they got the device and I'm concerned it has been damaging my car and was the reason for the alternator breaking in the first place. Has anyone else had this issue?
Best answer by tmo_amandaView original