1989 540 DSC light comes on while driving

After driving on highway DSC light will come on and will not turn off with the button.After restarting the car the light will be off until driving aprox.20 minutes on open highway.If anyone has had a similiar problem and knows of a fix please respond.Thank you.

hello,
sorry for mi english im french.
My car : 540 IA 1994
i have the same problem, I did not find a garage in paris to resolve.

you have solved the problem?

thanks
Patrice