[Beladona_13]

I just picked up this 1990 Cadillac Brougham 6 door limo by Eureka. It's a nice car, but someone had stabbed the ECC with a knife! I replaced the control head and all was well. That is, until yesterday. After starting the car I hit the warmer button... no response. I can make it cooler, but not warmer. In the process of trying to figure this out, now I cannot turn it off either! Now when I drive it, the display flickers on and off. Do I need another "new"head, or is there a way to fix these? Thanks!

PS - I cannot enter diagnostic mode as both buttons to do so are not responding!

 

[talismandave]

Try spraying and working the buttons with Electric Contact Cleaner.
Fixed a sticky button on mine that way, and the seat up/down switch.
Might not help but cheap and easy.

 

[Beladona_13]

I'll give it a shot!

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Now it doesn't work at all... Guess I buy another one...

 

[talismandave]

Check and clean the contacts on the back side, also the contacts under the hood where it connects to the temp sensor for the climate system.

 

[Robin Banx]

It's a funeral parlour car. It's been stabbed with a knife by a grieving client. It's dead. Get a replacement ECC head.

Cheers.........R.