Originally Posted by Zambee500
You should remove the radio fuse before disconnecting the battery. There is a bulletin for the 2008 and 2009 models concerning the REN and REZ MyGig radios being damaged after the battery is disconnected.
See this post: Online TSB's for information on viewing service bulletins for your vehicle. Even though the TSB is for 2008-2009 model years, it only shows up on that site under the 2008 model year.
From bulletin number: 08-003-09
MyGig REN or REZ Radio Inoperative After Battery Disconnect.
When performing repairs that require battery cable removal, the feed fuse for the radio (30amp, for fuse location please consult DealerConnect, TechConnect, or Fuse Cover) must be removed prior to disconnecting or reconnecting the battery
. Disconnecting and Reconnecting the battery can cause electrical spikes that may damage the MyGig - REN or REZ radio. Removal of the fuse will prevent this from occurring.
2009 Dodge Grand Caravan SXT (3.8) 200,000+ miles
2001 Dodge Grand Caravan Sport (3.3) 250,000+ miles
2003 Dodge Grand Caravan eL (3.8)
Previous Chrysler Vehicles: 1995 Dodge Caravan (3.0), 1993 Dodge Caravan (3.0), 1986 Chrysler Lebaron GTS (2.2), 1963 Plymouth Valiant (170ci)