did you happen to read the owners manual about using a MEMORY SAVER before unhooking the old battery to keep all presets?.........................................................................
Notes: *** 950 Cold cranking Amps (1000 cranking Amps) ***. 110 Reserve minutes. (STOP!: Use a memory saver to prevent the need to reset vehicle systems). Battery is vented to outside of vehicle. Battery located in trunk.
RepairPal Certified shops can diagnose and repair your 2001 BMW 740i. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
what if a person did not use a memory saver then what?
look in the owners manual,under changing the battery.then look at lost memory,presets.