BMW ActiveHybrid 750Li 2011 User Manual
Page 245
The 12 volt battery is discharged
When the 12 volt battery is discharged, the ve‐
hicle electrical system is no longer supplied with
electricity. The external start procedure sup‐
plies power to the vehicle electrical system and
the vehicle can be started.
High-voltage battery discharged
When the high-voltage battery is discharged,
the vehicle cannot be started. The external start
procedure supplies charges the high-voltage
battery to the point where there is sufficient
electricity available to start the vehicle.
Preparation
1.
Check whether the battery of the vehicle
providing assistance has a voltage of
12 volts and approximately the same ca‐
pacity in ampere-hours.
Capacity of the 12 volt battery of the BMW
ActiveHybrid 7: 90 ampere-hours
2.
Switch off the engine of the assisting vehi‐
cle.
3.
Switch off any electronic systems/power
consumers in both vehicles.
Bodywork contact between vehicles
Make sure that there is no contact be‐
tween the bodywork of the two vehicles;
otherwise, there is the danger of short cir‐
cuits.◀
Starting aid terminals
Connecting order
Connect the jumper cables in the correct
order; otherwise, there is the danger of injury
from sparking.◀
The so-called starting aid terminal in the engine
compartment acts as the battery's positive ter‐
minal.
The body ground or a special nut acts as the
negative terminal.
Connecting the cables
1.
Pull off the cap of the BMW starting aid ter‐
minal.
2.
Attach one terminal clamp of the positive
jumper cable to the positive terminal of the
battery, or to the corresponding starting aid
terminal of the vehicle providing assistance.
3.
Attach the other end of the cable to the pos‐
itive terminal of the battery, or to the corre‐
sponding starting aid terminal of the vehicle
to be started.
4.
Attach one terminal clamp of the negative
jumper cable to the negative terminal of the
battery, or to the corresponding engine or
body ground of the vehicle providing assis‐
tance.
5.
Attach the other end of the cable to the neg‐
ative terminal of the battery, or to the corre‐
sponding engine or body ground of the ve‐
hicle to be started.
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