Yes. I have a remedy, I did it on mine - had the same 'Y' shaped crack + many more..
Go to your hardware store in the silicone/plumbing/sealant area & do some reading on weather proof products.
Match the product description to that off the dash board environment.
IE. Heat & water resistant, Outdoor use, Bonds well with plastic.
Buy a tube of appropriate sealant, roll of masking tape, tiny brush & mini paint roller & 1 or 2 small pots of low sheen paint, depending on options below... 7 some water (I originally tried an oil based product but found water based worked better in the end - Up to you!
NOTE: make sure the sealant & paint have the same base IE: water or turps & be sure to buy 'low-sheen' - you don't want any reflections bouncing of your dash.
Get the closest color match of sealant to your dashboard that you can.
I ended up deliberately cracking all the brittle areas of my dash before re-coating - this re-instated the spongey feel.
Pot 1) The closest color to your dash that you can find
Pot 2) Either white or black - This is your tint - Depending on which way you need to go to match the colour of your dash. (darker or lighter)
OR
You can go for a 2 tone look by buying only 1 pot of paint that's a complimentary tone or color to that of the original dash color.
1)Clean the dash with the thinning agent(water or turps) & Neatly tape the edges of the area you want to paint
2) Thin the sealant product so that it has a consistancy like paint
3) This is your first coat that will easily fill the cracks & bond well with the foam beneath because you've thinned it down. Use the paint brush for this application & allow to touch dry.
When it dries it maintains it's rubbery consistancy. REPEAT IF/AS NECESSARY.
4) Now using a thicker consistancy, fill any remaing cracks. REMOVE TAPE Allow to dry properly - come back the next day & lightly sand any raised areas.
5) wipe the area down with thinners again & carefully re-tape the same edges.
6) Using your thinning agent, sealant & paint, mix all 3 together to get the colour & consistency you need for your final coat/s
Aplly with mini paint roller
Note: It's best to remove the masking tape at the end of each coat, otherwise you risk tearing all your hard work when removing the tape.
ALWAYS remove the tape before the coat has dried.
For this reason it's best to do this job on a day that's not too hot & in the shade or under cover.
I did mine 4 years ago & it's still nice & spongey/plasticky just like a dash should be!
Good luck!
Pictured is my first attempt: A bit lumpy & I used a semi gloss black paint - Too reflective

- go the low sheen.
Only pic I've got on hand at the moment.