Volkswagen Repair/Do it yourself battery replacement
flash wrote at 2006-10-22 23:31:50
Removing the battery without this memory saver causes more problems than losing radio presets. The transmission will have to be reprogrammed by the dealer because the vehicle will not shift properly anymore.
826yhy wrote at 2015-04-08 21:49:14
I use several years now a battery connector of a portable radio connected to a wired 12V power plug and 9 v battery. Whenever 12V car battery is disconnected , for the duration I plug the 9v battery into 12 v outlet ( cigaret lighter etc.)This keeps memory in the radio and so needs no re- coding.