Check panel lights, coolant and washer, don’t illuminate

[Freight]

When I hit the check button, all lights except coolant and washer fluid light up. Figured it was the bulbs, pulled it out and fed those two bulbs power from their through holes and both came on. Not dead.

I tried and failed to get the board separated from the housing - yes I removed the front panel cover thinking there were screws.

Given the panel lights don’t illuminate when “check” is pressed, this leads me to believe this is a problem isolated to board I searched here and there’s very little about bulbs not illuminating with the check button. My thought is maybe bad caps or broken solder joints, but I can’t get the board separated from the white housing in order to check. I also couldn’t find a pin out(I checked the Bentley) for that panel, to try to feed power to the panel on my bench and try to trip them that way. 

ideas?

[RetiredDoc]

If I were you I’d go on ebay and buy another check panel. Currently there a dozen or so ranging from $34 to $65.

But, being me I’d go out to my boxes of e28 spare parts and replacement parts I have collected and pull out my one with the labels in German. I know it works, but I gave up on it after a brief install since the German words confused me.
 

[Mike W.]

You might want to check the sensors first, though failure is typically that the lights won't go off.  But they're both dumb sensors, upside down to test for full, rightside up, outside the housing/fluid to check for empty, simple resistance test.

Probably unrelated since you were able to get them to light by manually powering them, but when I got my E28 neither low coolant or low oil worked.  Prior owner had run it low so often they burned out, junkyard panel and I was back in business.

[e28Sean]

But, being me I’d go out to my boxes of e28 spare parts and replacement parts I have collected and pull out my one with the labels in German. I know it works, but I gave up on it after a brief install since the German words confused me.

 

Solution: Learn German.  

[Freight]

If I were you I’d go on ebay and buy another check panel. Currently there a dozen or so ranging from $34 to $65.

But, being me I’d go out to my boxes of e28 spare parts and replacement parts I have collected and pull out my one with the labels in German. I know it works, but I gave up on it after a brief install since the German words confused me.

 

Haha eventually that’s my plan. My e24 had a German OBC and check panel that I pulled off a grey market car I found at a pick n pull. It’s one of the things I really want to change but there are more pressing things to spend money on.

i probably will just buy a new check panel. I’m just a cheapskate and like to fix things when possible