Battery discharge light comes of when braking, car doesn't charge correctly and starts hard.

Cou;d be a speed sensor/ABS. Cutting hard left or right is causing one wheel to move faster than the other. Slight variations will cause a traction light. Over time this will cause the ABS light to come on. I wouldn't worry about it right now. It would be hard to pinpoint the sensor that is going out. Just a note. When the ABS and Traction lights are on. All it does is revert your car back to the old system. Meaning that, your tires will lock up if you hit the brakes hard...

help me

You can do it.Its not very hard to reprogram the key fobs.Take note that your remote key fob battery is fine and not discharged/drained.Otherwise the procedure will not give proper results. For exact step by step procedure, Click the link below :--- http://howtobyme.blogspot.com/2011/10/how-to-program-new-keys-for-2005.html ---------- This should help.Thanks.Helpmech.

if your seeing 12 volts after the charge, it doesn't mean the battery is good,, a single cell thats bad in a battery will give you fits and produce the problems you listed,, remove the battery , and have it LOAD tested, that way you will get a true correct reading, a battery can show `12 volts, but a bad cell will not let it charge to the correct amps it needs to start the vehicle. once you've done that , and your sure you have a good battery ,, start the vehicle,, ( make sure that when you replaced the battery , that all the connections are clean and tight) with a meter, place one lead on each battery terminal, you should get a reading between 13.5 and 14.5 volts, if you do , then your alternator is doing its job, if not,, replace the alternator, ( your vehicle doesn't have a generator)

1st clean all the battery connections,, it appears whats happening is that the alternator isn't being able to charge the battery after a start , normally a good cleaning will do the trick, But your battery could have a bad cell too, Just because a meter says 12volts, doesn't mean the battery has the amps it needs, so have the battery charged, then LOAD tested, any parts store usually can do this for you . once charged, and with a meter connected to the battery terminals, you should get a reading of 13.5-14.5 volts, if not, you have an alternator issue,, unless the brake pads are worn excessively, correcting the battery issue most the time will also clear the brake light

Sounds like an immobilizer problem, you need to get the car diagnostics done as it might not start at all one day

SOUND LIKE THE ALTERNATOR BAD.NOT CHARGING BATTERY.

Could be a problem with your ignition switch. This happend to me. Battery shown it was charged, then while driving, the gauge slowly would drop. There could be a wire that is shot inside the ignition switch.

I can't answer the question about the gas fumes, but I had the same problem last year with the "Service Traction Sysytem" message and the Trac and ABS lights coming on in my Impala. Mine turned out to be because of a bad wheel bearing, that was causing the ABS and traction system not to work. I'm not sure if you've experienced this, but another thing that would happen with mine was that I would go to brake and have a hard time depressing the brake pedal, almost like it was pushing back. That is the point when the Trac and ABS lights came on.

Check all wiring connections to alternator and battery to insure all are good, if ok it will most likely need an alternator.