When it is no longer able to keep the system charged.
Starting with 2001 model, when the car is started, if you see either the battery warning or the battery along with the brakes warnings on, or intermittently flashing on, you need to have your alternator checked. Otherwise, its fine.
how to replace an altinator in a 2005 nissan altima
How do you replace a water pump on a 98 nissan altima?
You will need at least $300 to replace a radiator in Nissan Altima.
I need to replace the back window of a 1999 Nissan Altima how do I do this
No - See Link
Drew
how to replace a heater core on a 2003 Nissan Altima 2.5
You can find a 97 Nissan Altima alternator schematic diagram in the vehicle's owner's manual. You can also check local auto part stores.
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Where is the neutral safety switch on a 1994 Nissan Altima?
The oil dip stick on a 1999 Nissan Altima is on the side of the engine closest to the radiator. It is just behind the alternator.
well, this is what my mechanic told me when i had this problem (still have it) with my 1994 Nissan altima: the altima's alternator isn't working well. so, the battery isn't well supplied... Solution: replace the alternator immediately or dont drive the car until u do so less you make things worse. bajah