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EnglishOwner service procedures -> Jump-starting for your BMW 7 Series 2001-2007
Jump-starting
183n
Never use spray starter fluids to start
the engine.
If the battery is discharged, you can use
two jumper cables to start your car with
power from the battery of a second ve-
hicle. Always use jumper cables with
fully insulated handles on the terminal
clamps.
Do not touch high-voltage wiring
and cables on a running engine.
There is a risk of fatal injury if you do
this.<
4 Start by connecting the jumper cable 5 Then connect the negative terminals.
from the positive terminal of the sup-
port vehicle to the positive terminal
connector located in your BMW's en-
gine compartment. The cover of the
auxiliary terminal for jump starting is
marked with "Batt. +" (refer to the il-
lustration). Open the cover by pulling
the tab. The illustration shows the
auxiliary terminal for jump starting the
BMW 740i/L as an example. For the
BMW 750iL: Refer to "Engine com-
partment" on page 146
Attach the cable to either the support
Carefully comply with the following in-
structions to avoid personal injury and
damage to one or both vehicles:
vehicle's negative battery terminal, or
to a suitable ground on its engine or
bodywork. Then connect the other
end of the cable to ground on the ve-
hicle's engine or bodywork which is
to be started. Then connect the other
end of the cable to a ground on your
vehicle's engine or bodywork (for in-
stance, the nuts on the strut dome.
Refer to the arrows in the illustration
above)
1 Ensure that the battery on the sup-
port vehicle is also rated at 12 volts,
and that the capacities of the two
batteries (Ah) are roughly comparable
(printed on casing)
2 Leave your battery connected to the
car electrical system
3 Make sure that there is no contact
between the bodywork of the two ve-
hicles – short circuit risk
Follow the same sequence for
connecting the jumper cables if
you assist in jump-starting another ve-
hicle. If you do not, there is a risk of in-
jury caused by spark generation at the
battery.<
Online Edition for Part No. 01 41 0 004 597 - © 08/99 BMW Group
184nJump-starting
Towing the vehicle
6 Start the engine of the support
vehicle and let it run
7 Start the engine on the vehicle need-
ing the jump-start, and allow it to run
as usual. If the first start attempt is
not successful, wait a few minutes
before another attempt in order to
allow the discharged battery to re-
charge
8 Before disconnecting the jumper ca-
bles from your BMW, turn on the rear
window defroster and set the blower
to the highest speed; allow the en-
gine to run approx. 10 seconds. This
will prevent a voltage surge from the
voltage regulator to the electrical ac-
cessories
Tow fitting
Rear:
Apply pressure to the arrow symbol on
the cover panel to remove.
The screw-in tow fitting is stored in the
onboard tool kit; be sure that it remains
in the vehicle at all times. This fitting is
designed for installation in the tow
sockets located at the front and rear of
the vehicle, and is intended for towing
on paved road surfaces only.
Screw the tow fitting in until it
bottoms firmly. If this is not done,
the threads could be damaged.
Never attach tie-down hooks, chains,
straps, or tow hooks to tie rods, control
arms, or any other part of the vehicle
suspension as severe damage to these
components will occur, leading to pos-
sible accidents.<
9 Then disconnect the jumper cables in
reverse sequence.
Have the battery recharged if neces-
sary.
It should not be used to pull a vehicle
out of deep snow, mud, sand, etc.
Always observe all applicable towing
laws and regulations.
Access to tow sockets
Use only a nylon towing strap to tow
the vehicle, since the inherent resil-
ience of this material helps protect both
vehicles from sudden jerking move-
ments.
Front:
Apply pressure to the arrow symbol on
the cover panel to remove.
Online Edition for Part No. 01 41 0 004 597 - © 08/99 BMW Group
