the dealership said the terminal was too corroded to be cleaned and they had to replace the terminal and cable
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2005 Nissan Murano Question: how much should it cost to replace positive battery terminal
Answer #1patrick mannion from Greg Solow's Engine Room, September 12, 2011, 20:22Master
A lot of dealerships will only replace the entire cable and end, after market repair shops may choose to only replace the cable end (much cheaper).
Google image "battery cable end" lots of options but when disconnecting the battery you need to use a tool to save memory for clock, radio, seat memory, anti theft ect.....