I have a 2003 Mazda Protege5. When I turn my lights on the transmission shifts to 3rd gear, D and R both light up, and my reverse lights come on. Any Ideas of where to start?

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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your 2002 Ford Explorer XLS is only going forward in 3rd gear and not reversing, it could be caused by several issues. Here are a few possible causes:

1. Transmission control module (TCM): The TCM controls the shift patterns for the transmission, and if it is not functioning properly, it could cause the transmission to become stuck in 3rd gear.
2. Shift solenoids: The shift solenoids control the flow of fluid to the transmission, and if one or more of them are not functioning properly, it could cause the transmission to become stuck in 3rd gear.
3. Valve body: The valve body controls the flow of fluid to the transmission, and if it is clogged or malfunctioning, it could cause the transmission to become stuck in 3rd gear.
4. Linkage: The linkage connects the shifter to the transmission, and if it is loose or damaged, it could cause the transmission to become stuck in 3rd gear.
5. Automatic transmission filter and fluid: If the filter is clogged or the fluid is dirty or low, it could cause the transmission to become stuck in 3rd gear.

It's important to keep in mind that these are just a few possible causes and that there may be other issues that are preventing your Ford Explorer from going into reverse. It's best to take it to a qualified transmission specialist if you're unable to diagnose the issue.
It's also important to note that some of these steps require a certain level of mechanical knowledge and experience. If you're not comfortable with checking these items, it's best to consult a professional mechanic.if i was able to help my cashapp $ralphpapi thank you have a blessing day

Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
Mazda Protege 2002 2003 Repair Service Manual PDF

Check the linkage under the stick console. May be lose or broken.

that is your 3 and 4 shift solenoid in the transmission. it is stuck open and needs to be replace. it is very easy to do.

I rekon it's ya linkage in the gear box. It'll cost a packet to get it fixed and may even need a new gear box.

Sounds like one of the levers inside the transmission is either broken or otherwise disengaged. Remove the shifter to see if you can see any obvious reason.

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.

suggest that you check your transmission fluid post haste please. you may only need to add transmission fluid to your car. also,if you have to add the fluid,where did your fluid leak? check for leaks under your car when parked. you may need transmission fluid and filter change,suggest that you do this with new filter and add lucas transmission treatment to the fluid change also. you'll need to purchase this yourself,unless you have a mechanic in the family that can do it for you.if not i suggest you find a mechanic you trust,then tell him,or,her to add this to your tranny fluid change. also suggest while the mechanics there at the transmission to check the modulator valve on the transmission,and the vacum line that operates it. just a hint. thanks for choosing fixya.com

Check transmission fluid. If that is full, try changing the fuel filter. It could be starving for gas, and trying to shift but can't. It could also be the speed sensor, or shift solenoid.