Sensor failure, or data communications failure. Possible computer software issues.
could be a grounding problem make sure you have a good connection in that taillight
You put the card in the reader, it reads the files and you can open them on the computer.
You might need another taillight if that don't work you might need to see a mechanic.
Bulb most likely burned out..
A tandem computer system is a system that has built in redudencys so in case of a hardware failure it can still continue to work.
One you power on your computer. The cpu reads information from the hard drive operating system and is currently working to get you to do whatever you need to do. After loading, the computer may stop doing work until you move the mouse and/or click on something to open or do.
Monitors, Keyboards, and mice all need a signal from the computer to work properly. Have you have the computer checked by a Certified Technician lately
Open the liftgate Remove the 2 screws at the top of the taillight assembly Carefully " work " the taillight straight back towards you . There are plastic pins shaped >>>>>>>>>>>> that hold the taillight assembly in place The bulb sockets are a simple turn to remove / install
It reads of the 2 transmission output shaft or the 4wd transfer case output shaft. Basically it reads how fast the output shaft is moving and sends that reading to the computer and the computer sends it to the speedometer. Without it the speedometer doesn't work.
take it to the shop as soon as possible.
The computer reads signals from sensors in the vehicle. The computer then processes the signals and takes action (like adjusting the air/fuel ratio) to make the car operate properly.
If you are working on a computer you should save your work often because if your computer crashes or there is a power failure or anything else that could cause your computer to fail then the amount of new work you loose will be minimal.