ddorlando

Recently my IPC illumination started to intermittently work. The following things appear to work fine:

• Head Lights (high and low beam)
• warning lights (check engine, brake, etc).
• Blinkers
• All gauges
• No IPC DTC codes

The Following things do not work:

• Dash Illumination
• AC Illumination
• Door controls illumination
• Radio illumination
• Dimmer switch (except when turn all the way for courtesy lights, those work)

Things I have checked:

• DTC codes
• Fuses (all were in tact)
• disconnected battery (just for good measure)
• Tried to turn off Twilight, car must be Canadian, cause the option to turn it off wasn't there

I have been reading the shop manuals which say that if the illumination doesn't work, I will likely need to replace the IPC unit. I am wondering if anyone has experienced this, and if so what is the fix. Do I just need to replace the bulbs, is there a relay somewhere I can check?

I will check the connections tomorrow, I don't think this is the issue as everything else works.

If I do have to replace the IPC, how much should that run?