7 Series E66 735Li (N62) SAL
1.
Terminals 30B and 30U shut down by power module
When the encoded number of wake-up processes is reached, terminals 30B and 30U are shut down by
the power module.
2.
Terminal 30LM briefly shut down by power module
After terminals 30B and 30U have been shut down, the bus participants on the K-CAN must go into
standby within an encoded period of time (e.g. 5 minutes).
If not, the power module will isolate terminal 30LM from the vehicle electrical system for an encoded period
of time (e.g. 10 seconds).
A terminal 30LM reset is started. All control units connected are set to the basic setting.
Note: Wake-up counter not cleared during "terminal 30LM reset" process.
The wake-up counter is no longer cleared during the "terminal 30LM reset" process (with the previous
software, the counter was cleared when the connection between the consumers and the battery was
restored).
Battery starting capability retention
Old:
On a vehicle without off-load current violation, terminals 30B and 30U are not separated. This means that the
battery capacity could drop below its limit of starting capability without apparent reason and without the power
module reacting.
New:
From terminal R OFF, the system will wait for an encoded time (e.g. 5 minutes) if auxiliary consumers are
shut down.
If the battery's limit of starting capability is exceeded, terminals 30B and 30U are separated. A "terminal 30LM
reset" is performed for an encoded period of time (e.g. 10 seconds).
Exception: The message "starting capability at risk" has already been transmitted on terminal R ON. In such
cases, the shutdown is interrupted by a terminal change after terminal R is switched OFF. The shutdown is
restarted after a set period of time.
Reason: The occupants are still in the vehicle (terminal R ON). The radio etc. are switched on. Current
consumption is high. The power module reacts immediately and reports the low charge with a Check-Control
message.
When terminal R is switched off, the control units will not be separated from the battery by the power module
for some time. This allows the occupants to leave and lock the vehicle.
Reason: If the control units were to be separated from the power supply too quickly, the door modules would
also receive no current. It would no longer be possible to lock the vehicle.
Reduced run-down period
Old:
A vehicle is separated from terminals 30B and 30U due to an off-load current violation. A "terminal 30LM
reset" was performed.
The terminals are reactivated (e.g. when the vehicle is unlocked with the radio remote control). The terminals
cannot be separated again for 60 minutes (16 minutes without telephone).
This long run-down period could allow the battery charge to drop well below its starting capability limit.
New:
The run-down period for all consumers prior to off-load current monitoring being restarted is set with an encoded
value (e.g. 20 minutes).
SBT Power supply E65, E66
BMW AG - TIS
09.02.2013 13:22
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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