Question about Hyundai Motor 2003 Elantra

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2003 elantra. no heater, locks, radio, or windows. and int.lights

Have a 2003 elantra. battery was changed out. and the 100 amp alt. fuse was blown out. the one on the under hood relay center. after these were fixed car now has no power locks no heater no interior lights and no windows. all fuses are good. power at both sides. power probed locks and windows the motors are fine. i have to assume we have a ground issue or a blown fusible link. any confirmed fixes on this issue would be great.

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Go to www.hmaservice.com and register your vehicle by VIN #. You'll then have access to shop manuals, service bulletins, wiring diagrams, etc. Hope this helps.

Posted on Sep 06, 2009

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Posted on Jan 02, 2017

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My horn does not work which breaker is it e350 1998 5.7 litter triton


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Had to replace my battery, now I have a new battery and the car wont start, nothing. Cant even jump start it now. Almost like the starter is getting no juice, any ideas???


Hi Chris,
there is a main fuse, usually it like big amps like close to 100 amps. depending on the make and model. It will be under the hood. what usual happens is the jumper cables are hooked up with reversed, but that doesn't matter. What matters is a 60 to 100 amp fuse that is blown, if its a older model it will have a bar fuse, new ones are sometimes solder in. The fuse will be blown, you should be able to see it visually. It should say battery main fuse more then likely its a 60, should be a pluck and chuck. Hope this helped Tim

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What does fuse #25 go to?


It goes to all the things you mentioned and then some. Sounds like you may have hooked the battery terminals up backwards.

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Toyota rav4 fuses


You need to check your alt fuse. It is going to be a big one, I think it is on the positive cable attached to your battery. should be 100-120 amp fuse. If it even looks suspect then I would change it out. You will also have a alt fuse in the main fuse block under the hood. Should be a 40 amp. There is a kill fuse it should be numbered 1 and 2 or just number one. If that one is blown you will not be going anywhere.

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Battery light alternator


The Charge lamp comes on with the Alternator fails to keep battery charge going. (lots of way to fail, and ALT Is 100% good) it's a system. each part of it must be good, end to end.
so...
i put my voltmeter across battery, i start car, i see 13.3 to 15vdc, alt is good.
no? , i see now, 12.2v. ALt is dead, (i didnt say bad) and battery is sightly discharged, 12.6v is charged. (key off, rested voltage)
This 12v tells me the ALT is shut down. only why is the question.

how can any charge system fail,
bad battery tops the list here, they LOVE to fail.
1: belt slips.
2: belt missing
3: bad alt.
4: bad wires to ALT . (corrosion on any wire or lug)
5: fuses blown , any listed below.:
your alt is not an ECU controlled, alt ,its 100% self contained

did you ever remove the ALT and blow the 100 amp fuseable link
the first step of any alt pul, is the pull the NEG, battery lug or BOOM.

im logged in to alldata.com so can you.

and what do i see.
a 5 wire ALT. one is the frame ground, so it must not be rusty or..... it fails. frame to engine block. no rust here.

wire L , yellow.goes to dash LEDs (alt failure idiot lamps) (this works)
wire. S white goes to ALT 5a fuse, is it blown?
wire :B B/G color, goes to the 100 amp link fuse. (blown>?)
wire IG Red-white, goes to a fuse marked 10A gauge.

i think the IG wire is the voltage sense wire.
no sense, no charge. I think the whole I/P dash cluster goes dead when this fuse blows.

The S wire is the boot strap voltage sense, it wakes up the regulator .
if open , the reg stays asleep, as does ALT.
Alternators can not self start, the regulator has boot strap device
that cures that. called self excitation. so this wire is critical.
All wires except the L wire is critical. in this case.

the B wire is the big wire, it charges the battery . 50amps or more..

any of the 5 paths open , kills the ALT dead.
The REG inside the ALT can also shut it down.
eg: battery bad, with huge cell resistances. total.
eg: overvoltge for any reasons. including attempts top run car with no battery, (dont ask)
eg: over current (battery cells 1 to 6 shorted) or 25 KC lamps added.
eg: over temperature shut down.

that is about it.







Dec 31, 2013 | 2003 Toyota Matrix

1 Answer

2003 LANCER 2.OLT=REPLACED BATTERY,REPLACED 100AMP FUZE@BATT=CAR TURNS OVER BUT WON'T START! A JUMP START WAS ATTEMPTED BUT BELIEVE THEY CROSSED THE CABLES! HELP !


..@briver916...Recheck all the fuses and relays in the 2 boxes under the hood and another one of fuses and relays panel inside the car, front of the driver seat, behind the pull out box next to the hood release handle..Under the hood check inside the one with 8" black square box;Check # 1 slot fuse, it is 60 amps for (+B ), check # 8 slot fuse for Engine control 20 amps, check # 15 slot Fuel pump 15 amps..And check another skinny black box lie next to that box, it has relay F, that is Engine control, check that also...And inside the car fuses panel; Check # 1 slot fuse 10 amps that for Ignition coil, # 8 slot Engine control 7.5 amps, # 12 slot Engine control 7.5 amps..After that recheck the battery post, that maybe needed re-tight..Don't force to tight too much, that will crack and broke the post and the plastic battery body...And check all the ignition wires and spark plugs that are tight or needed to replace..And check all the vacuum lines that are loose and leaks suctions or sometimes they are crack open by long ages..By the way check and recheck all those other fuses and relay for make sure they are good...Believe me that not hard to figure out those problems..You did everything rights so far..That one 100 amps fuse at the + battery post cable was connect to alternator for recharging your battery and give power to other items when car was running..Below that post, the middle cable was connect to the starter motor and the bottom cable was connect to that 8" black fuses and relays box under the hood...

Sep 20, 2011 | 2003 Mitsubishi Lancer

1 Answer

My 2003 elantra all 4 windows stopped working. checked 30 amp fuse in dash.. was good. checked relays box with fuses in it under hood. Didnt see anything blown. What else could cause all 4 windows to stop...


Wiggle the wires going into the door from the pillar where the door hinges are while trying to put the window up or down if nothing happens then change the master switch.

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1 Answer

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1. Alternator's regulator has stopped working
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3. Wiring between alternator & battery &/or fuse/relay box.

Feb 13, 2011 | Hyundai Motor 2003 XG350

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