the clock keeps changing time

its in a black 1999 maxima GXE

It happens in my moms maxima
she tellls me that the time changes all the time
she can adjust it to the regular time, but it keeps changing
it doesnt matter if its the minuits or the hours they both can change to any random time.
the time adjust buttons dont appear to be sticking,
but she did say when my son put his foot (16 year old big feet kid) on the dashboard the clock changed time

time does increase, and the display is lit always when ignition is on.
any ideas

thanks

 

Time for a new clock.

 

Try searching on twinturbo.net for clock repair... A friend of mine fixed his Maxima clock using similar tactics.

 

Is your mom one of those grannys that drives a max around? I see them driving 20mph all the time!