Heater a/c control lights are out how do i fix it

If you have already replaced the control unit but the issue still persists, the problem may lie with faulty wiring or loose connections. It's possible that a wire is not making proper contact, which could cause the issue where the control panel only lights up occasionally. You may want to check the wiring and connections to see if there are any loose or damaged wires that need to be repaired or replaced. It's also possible that there is an issue with a fuse related to the control panel's lighting. Check to ensure that all the fuses in the fuse box are functioning correctly, and replace any that have burnt out. If you are not comfortable working on electrical systems, it's best to take your truck to a professional mechanic who can diagnose and fix the issue correctly.

check connections and harness --dimmer switch for damage or shorts

Dodge Caravan (01-03) Instrument Panel light replacement ...

? 12:25
https://www.youtube.com/watch?v=d9qi78IAPF0
Mar 4, 2013 - Uploaded by ryanthiusjunk
A common issue with the Dodge Caravan (and Chrysler Town ... I just bought a Dodge Grand Caravan (2002) and noticed that the entire dash board didn't light up at night. Needless to say I needto replace all of those bulbs and after ... do you know how to fix the 2009 caravan instrument panel lights going ...

DIY Dashboard Light Bulb Replacement - YouTube

? 8:07
https://www.youtube.com/watch?v=_bf5w3AZR_0
Jan 7, 2013 - Uploaded by Chris Punt
How to replace dashboard lights on a Dodge grand Caravan. ...Most just want to get the bad bulb out and put new one in. it seems to me the ... pull the dash panel out far enough to turn it upside down on the column and ... Bought mine at Advance Auto, but I know it is not a hard bulb to find and can be ...

2001-2007 Dodge Grand Caravan/Chrysler Town and ...

It's called a ambient light sensor . The ambient light sensor is a light-sensitive transistor that varies its voltage signal to the body control module (BCM) in response to changes in the outside (ambient) light level
If the technician didn't know if it would fix it or not , should have found a more knowledgeable tech. Hooking up a factor scan tool would have found a DTC - diagnostic trouble code in the BCM - body control module .
DTC B2645 Ambient Light Circuit

possibly just the bulbs, but rare that two go together except if there is a bad earth involved. It requires removing the dash to access and replace bulbs and fix earth. some people in advertantly fit aftermarket radios up to lighting returns thinking they are earth. can cause some funny events .best .earth for radio is body

replace whole control

my book says to look here: Behind A/C and heater control panel, to right handside of steering column.

you need to replace a/c heater control panel..cannot replace bulbs..they are LED

i just recently replaced mine and the temp control had burned . the dash fascia needs to be removed. the vents must come out and then remove the screws that hold it on..there are probably 10 screws.. under the vents , behind the ashtray, and behind the cruise control switch and dimmer switch.. once this is done you need to remove the 4 screws that hold the heater control unit in. the bulb that needs to be replaced lights up temp control and fan speed...you may be able to download an exploded veiw of the dash fascia...this is an involved job...but worth it at night!

Yes, there is illumination behind the heater control panel.

You need to remove the center inst cluster upper (radio) & lower finish (heater) panels to gain access to the heater control; the light socket is behind the heater panel.