you dont
do you have to reset computer after changing battery in 2003 745li
yes it does
With a scan tool, or unhook the battery for 5 minutes
Disconnect your battery. Yup..It's that simple.
diconnect the battery for 2 minutes
Disconnect your battery for over 1 hr and plug it back in.
Unhooking the battery will clear the short term memory in the computer. Simply unhooking the battery should not do anything that requires any other reset.
Unhooking the battery for about 20 minutes should be more than enough to resed the computer.
One option to reset is to disconnect the positive (+) battery cale on the battery for 3 minutes. Then reconnect it , this will reboot the computer and the light. SORRY: It doesnt work on the Nissan 2003 350z to do this.
remove negative and positive cables from battery, touch cables together for 30 seconds and then reconnect.....will be reset.
check your fuses
Check out the realted link for some advice on how to reset the computer in your 2003 BMW 325I computer.