It usually means that you have a stored trouble code in the HVAC system. You have to retrieve the code and then diagnose it accordingly.
No the climate control is tied into the electronic control system of the car which is controled by the computer. The climate control can also be used to view or display fault codes from the computer...............
sounds like you have it set for Celsius not Fahrenheit.
if all buttons and lights went out on your climate control then either its not receiving proper power or ground, or the control panel assembly is faulty.
If you have the automatic climate control system, I do not think there are actual "bulbs" in the display as it is all electronic. In my 1988 LeSabre I had to replace the entire control unit which I picked up at a salvage yard. Just a thought.
In a 1998 Oldsmobile Aurora, the climate control system is typically located in the center console of the dashboard. It features a digital display with buttons for temperature settings, fan speed, and air distribution. You can adjust the climate control settings using the knobs and buttons directly beneath the display.
replace climate control switch, the hole unit on rockauto.com
The function of the LCD polarizer in electronic devices is to control the direction of light passing through the liquid crystal display (LCD) screen, allowing for the display of images and information in a clear and visible manner.
The lights for the LCD climate control in a 1986 Nissan 300ZX are typically located behind the display panel. To access them, you'll need to remove the climate control panel from the dashboard. Once disassembled, you can replace the burnt-out bulbs or LEDs that illuminate the display. Always consult a service manual for specific instructions and safety precautions.
See the dealer/
To change the climate control display from Fahrenheit to Celsius on a Peugeot 406, locate the climate control unit on the dashboard. Press and hold the "Auto" button while simultaneously pressing the "Up" or "Down" temperature adjustment button until the display changes. Release both buttons, and the temperature unit should now be in Celsius. If this doesn't work, consult the owner's manual for specific instructions related to your model year.
To reset the electronic climate controls on a 1994 Buick Roadmaster, first, disconnect the vehicle's battery by removing the negative terminal for about 10-15 minutes. This will reset the climate control module. After reconnecting the battery, turn on the ignition and check if the climate control system is functioning correctly. If issues persist, further diagnostics may be needed.
Electronic Throttle Control or Electronic Timing Control