i have replaced the capacitor, the writing on the capacitor is F104, this can be easily obtained from any electronic shop.
the capacitor i replaced with is printed "C6" on the board, i suspect this capacitor faulty because it connects from minutes adjustment button to the ground. (according to the repair manual "Service Manual 92-96_lude.pdf" Page 23-218 & 23-219 )
if the capacitor is at fault and becomes a short circuit allowing current flows from the ground to the minutes button, the effect is just like you keep pressing the minutes button. (i am not an electronic guy, this is my own "common sense" explaintion, so use it at your own risk)
so far my clock has been tested 1 hour night drive, and 0.5 hour driving under the sun, it has been working fine. i will post more outcome after further testing.
if the hours counts up constantly, you should replace the capacitor "C5".