I have a 2012 Mercedes Sprinter 2500.
I had a no start morning a couple times in the last few weeks and finally the battery would hold no charge. I took it in and was told it came back as need to replace, so I did so. Low and behold the van dies after a short drive. The new battery was not being charged. I charged the new (dead) battery and took a multi-meter to the battery with the van running and found the voltage to just drop from 12.6 volts down and down. At this point I believed it was either a problem with the y-cable that connects the alternator to the battery or the alternator itself. I took the multi-meter to directly to the alternator and found it to put out 11.80 volts at idle and 11.83 volts at around 3000rpm. My question is, should I just replace the alternator or do you think there could be another issue?
Thank you for any help you can provide!