S 600 Coupe (140.076) V12-6.0L (120.982) (1997)
If certain measured values are not supplied to the ASSYST, e.g. because of failure of a sensor, it switches to stored substitute values. An appropriate
entry is then made in the fault memory of the particular control module.
If the power supply fails, the data are retained. The times without operating voltage (battery disconnected) are not recorded, however. They can be
retroactively included, however, with the HHT.