2004 mazda 3 transmission problem

Because of the battery light coming on, it sounds like you have a problem on the computer communications network. You need an auto electrician with a pro grade scan tool computer to diagnose. It is very unlikely you need a new transmission.

https://www.google.com/search?q=2000+Mazda+Protege+won%27t+shift+from+3rd+to+4th

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Check your tyranny fluid is full, sounds like you may have blown a transmission band.... usually in an automatic transmission the car will go to what seems like neutral on the gear that is gone, usually preceded by a few months of hard jerky shifting. Not much to do if this is the case but to get a rebuild or new transmission, it will continue to get worse as you get higher mileage ( other gears will start to go) . These things happen over time. Sorry of that is the case.

I don't think overheating of the engine has much to do with the transmission, either automatic or manual. If you have an automatic transmission, did you check the fluid? Sometimes low fluid stops certain gears from changing, as the torque converter doesn't have enough fluid to pressurize the servos to engage the clutches.

Transmission speed sensor loss of signal will not allow torque converter lock up (no overdrive). Transmission filter should be serviced at 80,000 miles. Perform an OBDII scan for stored fault history. The scan should show any issues with trans. sensors or solenoids that can be addressed during trans. service. Let the ODBII scan be your guide to any repairs to avoid buying parts you don't need.

For Automatic transmission problem,Check the list of help links below.click the link below:----Automatic transmission troubleshooting:----

http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html

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Automatic transmission shift lever issues?-------

http://technoanswers.blogspot.com/2012/01/automatic-transmission-shift-lever-hard.html

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AUTOMATIC TRANSMISSION FLUID LEVEL? --

http://schematicsdiagram.blogspot.com/2011/07/how-to-check-automatic-transmission.html

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AUTOMATIC TRANSMISSION FLUID AND FILTER?

http://schematicsdiagram.blogspot.com/2011/07/how-to-change-automatic-transmission.html

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Transmission fault light on car dash?

http://schematicsdiagram.blogspot.com/2011/12/transmission-fault-light-on-car-dash.html

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Transmission shifting problem?

http://schematicsdiagram.blogspot.com/2012/01/transmission-shifting-problem-on-toyota.html

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Transmission Slips out of 2nd gear?

http://repairhelpcenter.blogspot.in/2012/02/transmission-slips-out-of-2nd-gear.html

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OD light flashing and transmission fluid leaking?

http://repairhelpcenter.blogspot.in/2012/02/od-light-flashing-and-transmission.html

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Why Transmission fluid leaks near radiator?

http://repairhelpcenter.blogspot.in/2012/02/transmission-fluid-leaks-near-radiator.html

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transmission fluid leaking?

http://technoanswers.blogspot.in/2012/02/ford-windstar-transmission-fluid.html

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****** wont go in reverse?

http://technoanswers.blogspot.in/2012/02/dodge-neon-wont-go-in-reverse.html

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Automatic transmission will not go into reverse?

http://technoanswers.blogspot.in/2012/02/dodge-automatic-transmission-will-not.html

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Transmission is making buzzing noise?

http://technoanswers.blogspot.in/2012/02/transmission-is-making-buzzing-noise.html

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This will help.

Thanks.

Sounds like it needs a transmission. Try JDMengines.com

First thing to do is check the fluid level if that ok you may want to think about having the transmission filter and fluid changed, there are other possibilities but check these first