Deenergisation - SMART Fortwo 451 Series Introduction Into Service Manual

Deenergisation

To allow repair and service operations to be
performed without any risk of electric shock, the
high-voltage on-board electrical system must be
deenergized and protected against reactivation.
The deenergization and restart must be docu-
mented in a vehicle power disable event log and
vehicle initial startup log. The logs must be stored
with the vehicle repair documents.
i Note
When a high-voltage on-board electrical system
has been deenergised, only the repair and main-
tenance operations which made the deenergisa-
tion necessary should be performed.
All high-voltage relevant repairs and mainte-
nance operations should be designed as sepa-
rate procedures so that the vehicle is not put in
a condition which could affect restarting of the
high-voltage on-board electrical system
because multiple operations are in progress
simultaneously.
50 Introduction of smart fortwo electric drive (3rd Generation) • Model Series 451
The high-voltage on-board electrical system is
deenergised via vehicle diagnosis (DAS). Pulling
out the Service Disconnect plug underneath the
instrument panel in the left footwell physically
interrupts the actuation of the contactors of the
high-voltage battery. The empty slot is protected
against reinsertion by a lock.
S7 Service Disconnect
N10/10 SAM control unit
P54.25-8975-00