Hey guys, it's a 2003 G35 sedan. My alternator crapped out a couple months ago because it was putting out too much voltage putting my car into limp mode. I had the dealership replace the alternator but they told me they didn't have an OEM one so they put an aftermarket one in. Warranty on labour only, no parts. They also replaced all my belts at the same time.

While trying to chase the electrical gremlin that was putting my car into limp mode that turned out to be my alternator, the dealership also replaced my DRL module, battery, Key

Car was running all fine and good but last week intermittently the battery light and the ebrake light come on when I start the car but goes away when I start driving. I don't know if it's just me but I also swear I can hear some sort of whirring sound when I drive, deffinately not a belt squeel though. Friends said my car always sounded like that so I'm not sure. Is my alternator about to crap out again? Any possible checks I can do?

I've searched on the forum already and the people experiencing the alternator problem with batt light and brake light similar to mine had their lights stay on. Like I said, mine only comes on sometimes when I start the car and goes away usually immediately after I start driving or blip the motor.


Thanks in advance

 

Yes, it's getting ready to crap on you. Sounds like it's not charging at idle

 

My 2003 G35 coupe is having the same problem - ebrake and battery dash light coming on. I'd come out after the car's been parked for a few hours to a weak battery - all electrical components (even headlights) functional, but not enough power to crank. Went out and bought a portable battery jumper for a temporary solution but I'm pretty sure it's the alternator.