A/T fluid temperature warning

The transmission temperature warning light coming on in your 2005 Dodge Dakota 3.7 4WD can indicate several potential issues, and it's good that you've already checked the fluid and found it to be in good condition. There are a few possibilities to consider:

1. Faulty Temperature Sensor: The most common cause of a transmission temperature warning light is a faulty transmission temperature sensor. This sensor measures the temperature of the transmission fluid and sends this information to the vehicle's computer. If the sensor is malfunctioning, it may trigger the warning light unnecessarily. The sensor you're looking for might be called the "transmission temperature sensor" or "transmission fluid temperature sensor." It's often located in or near the transmission fluid pan.
2. Wiring or Connector Issues: Sometimes, the issue might not be the sensor itself but the wiring or connector leading to it. Damaged or corroded wires or a loose connector can disrupt the sensor's function and trigger a warning.
3. Overheating: While you mentioned that the fluid wasn't excessively hot, it's possible that the transmission briefly overheated during your drive, causing the warning light to activate. Overheating can occur due to heavy loads, towing, or driving in high-temperature conditions. However, if the temperature returned to normal quickly, it may not be a cause for concern.
4. Intermittent Issue: Sometimes, electrical sensors can develop intermittent faults. If the warning light doesn't come back after the incident and the transmission continues to operate normally, it could have been a momentary glitch.

Since you've been unable to find the specific sensor through local auto parts stores, it might be best to contact a Dodge dealership or a specialized auto parts supplier. They may have access to the exact sensor you need.

Additionally, you can consult your vehicle's service manual or contact a Dodge technician for guidance on locating and replacing the sensor.

If the issue persists or if you experience any abnormal transmission behavior, it's a good idea to have the vehicle inspected by a professional technician who can use diagnostic tools to check the sensor's functionality and address any underlying issues.

2.7 or 4.0 Engine ??
VIN # will help

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have a pressure test done on the box to check for internal faults. Any high pressure leaks will cause heat. check the filter and while the pan is off adjust the bands and clutch packs . Check the radiator cores are not blocked as engine temperature will affect the transmission oil temperature . check oil level as extra oil will cause frothing and over heating.

fans came late on those car,like 212 and second fan comes on at 224,you reprogram it to come a lot sooner,,other thing is there might be gunk inside the block,and coolant has hard time to pass through,and staying longer than enough in block temp goes high,even tough the radiator is doing it's job,it is just coming out block lot hotter than it suppose to be,and gauge read the block not the radiator

When this warning light flashes it means the fluid (ATF) temperature of the transmission have reached a level that is detrimental to the operation of the transmission and damage will occur if the cause is not corrected. The causes can be overloading (towing) the vehicle, severe operational circumstances such as high air temps. Other common causes are excessive slippage of the transmission due to worn clutch packs or a defective torque converter. Also the TFT (trans fluid temperature sensor) can malfunction and send a false signal to transmission control module (TCM) and set the warning light. I would not ignore this warning, have it checked by a transmission shop or the dealer.

Transmission Temperature light only comes on when the transmission has reached the operating limits and tells the temp sender to send a warning. The OD light is the Over Drive light.
There may be several reasons causing the Trans. Temp light to come on. The first would be if the transmission is low on transmission fluid.
Place you vehicle on a level surface. You can check this by letting the vehicle warm up to normal operating temperature, then open the hood and remove the transmission dipstick and wipe it clean with a paper towel or shop rag. Then reinsert it and remove it again, holding it horizontal look at the end of the dipstick. You will see a level mark and a add mark. If it's on the add mark then you need to add transmission fluid. Do not add more then 8 ounces at a time, before rechecking the level.
If the fluid is full, smell the fluid on the dipstick, does it have a burnt smell?
If the fluid has a burnt smell or it's a dark brown color then you will need to change the transmission fluid and filter.
The Overdrive light is on due to high transmission temp or because the Overdrive button has been pushed. ( If equipped with a manual overdrive button)
When the transmission is hot it will turn the overdrive off to increase the speed and pressure of the transmission fluid to help cool the transmission.
So this problem will go hand in hand if you find a problem with the transmission fluid.
You can also take you vehicle to you local auto parts store and have them check the engine codes. There may be another problem causing this issue.

I think the light you are seeing is for low coolant. There may have been a small air pocket in the system. So just check the coolant level. If it is low add some. It's not uncommon to add a small amount a day or two after work was done on the coolant system.

is cooling fan coming on?? the coolant level light pertains to a sensor that is in radiator side tank that is notorious for going bad you may have two seperate problems normal temp at high speed tells me the wind passing across radiator is keeping cool when stopped or in traffic as temp increases pcm commands fan to come on if it does,nt you will heat up

This light warns you if the transmission temperature goes to high

hi, this warning light is either telling you the water level is low or the temp is to high.
If this light comes on as soon as the ignition is switched on then its more than likely low water level or it could be that the sensor itself as give up working, these are not that expensive to buy but check your water level first and top up if needed.
If the light comes on after you have been driving for a while then this is telling you it is getting to hot which usually means the thermostat needs replacing.
Any of these problem shouldnt cost to much to repair as their are plenty of parts available so will be cheap and easy to get.

Hope this is some help to you if you have any problems or questions then give me a shout back.

As for driving 300 miles then if the light comes on as soon as you start the car then you should be ok but if it comes on after the car has been driven then it could over heat and this can cause the head gasket to blow and then this mean very expensive repair. So if this is the case then when the light comes on its best you switch of and rest for 30min to get the temperature down. If the lights on as soon as you start the car then you should find you will be ok.