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IndyMike · 05-12-2008, 12:22 PM

Need some quick info on this as the '03 E46 Touring's battery apparently just gave up the ghost after 5 1/2 years.

Does anybody know if a certain amount of voltage has to be maintained on the electrical system during a battery change? I didn't see anything in the maintenance manual and I'd hate to dork up something like the OBC, which would probably require a trip to the dealer for re-programming.

05-12-2008, 12:22 PM	#1
IndyMike Elected by grace Join Date: Feb 2006 Carmudgeonly Ride: 11 1 M; 11 328iT; 22 M240ix Location: Brickyard Posts: 1,962	Replacing battery Need some quick info on this as the '03 E46 Touring's battery apparently just gave up the ghost after 5 1/2 years. Does anybody know if a certain amount of voltage has to be maintained on the electrical system during a battery change? I didn't see anything in the maintenance manual and I'd hate to dork up something like the OBC, which would probably require a trip to the dealer for re-programming.