ASR and ABS Dashboard Lights (& Roof Operation?!)

[Ian B]

I occasionally have a weird thing happen when starting my 1997 SL320. The orange ASR and ABS dashboard lights stay illuminated. It only happens every few months and usually clears by restarting the car. The strange thing is, when it happens it also disables the roof up/down operation.

Although it is an intermittent (read as notoriously difficult to diagnose) problem, I would be interested to know if there is a simple fix or if anyone else has had this odd combination of errors occur.