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: reverse polarity protection?

Boostaholic
02-20-2009, 02:58 PM
yesterday, my uncle took his altima to nissan to get a C service, when he came back the battery no longer get recharged. The car will drive when it starts but it won't charge the battery anymore.

Forward to this morning, he connected the jumper cable backwards (reverse polarity) when jump starting the car, it fried the jumper cable ends and he towed the car to nissan dealer. I have a feeling nissan may rip him off this time by saying shit load of things are fried and needs replacement. I would think there should be fuse and relay to protect the circuits from frying this when this kind of things happen. anyone have experience with this kind of things?
!SG
02-20-2009, 04:23 PM
if he hooked it up backwards, check all the fuses including the big main ones that are rated at high Amperage.
skyxx
02-20-2009, 05:31 PM
Shoei gets brownie points :D
Rikaro
02-20-2009, 05:49 PM
I don't think you get warranty for human errors, but I would definitely try talking to them about it though
Volvo-brickster
02-20-2009, 06:09 PM
the first thing i would think of is the voltage regulator with the alternator
darkmooon87
02-20-2009, 06:11 PM
reverse polarity can be countered by BKB. GG
!SG
02-20-2009, 06:11 PM
i would think that too, but i think most alternators are rated at what, at least 120 amps?

the main fuse is i think rated at 100A so i think that will blow first.

i only know cuz someone towed a car into advance that would not start, and the owner did the same thing, accidentally collected the jumpers backwards. we traced it down to the main fuse.


the first thing i would think of is the voltage regulator with the alternator
Boostaholic
02-20-2009, 09:11 PM
ok to up date. he got the car back with a $300 bill. they replaced the battery, bunch of fuse here and there and the battery terminal. is that expensive?
JesseBlue
02-20-2009, 10:19 PM
well...it takes time to diagnose things too...i work in an industry where we charge 165 bucks an hour for items as expensive as cars... so no biggie...expensive mistake...but thats the price for error right
Raid3n
02-20-2009, 11:37 PM
could have been a lot worse =x
underscore
02-22-2009, 12:03 AM
now those idiot-proof jumper cables don't seem so expensive :haha: