BMW M3 SEDAN Owner's Manual page 340

MOBILITY
Warning
If the jumper cables are connected in the
incorrect order, spark formation may occur.
There is a risk of injury. Pay attention to the
correct order during connection.
Warning
In the case of body contact between the two
vehicles, a short circuit can occur while jump-
starting. There is a risk of injury or risk of
damage to property. Make sure that no body
contact occurs.
Preparation
1. Check whether the battery of the other ve-
hicle has a voltage of 12 volts. The voltage
information can be found on the battery.
2. Switch off the engine of the assisting vehi-
cle.
3. Switch off any electrical components in
both vehicles.
Jump-start terminals
The jump-start terminals are located in the en-
gine compartment.
Additional information:
For an overview, refer to page 320.
Open the covers of the jump-start terminals.
Connecting the cables
Before you begin, switch off all unnecessary
electronic systems/components such as the
radio on the assisting and receiving vehicles.
1. Open the lid of the jump-start terminal.
2. Attach one terminal clamp of the positive
jumper cable to the positive battery termi-
nal, or to the corresponding jump-start ter-
minal of the vehicle providing assistance.
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Breakdown Assistance
Online Edition for Part no. 01405A88034 - VI/23
3. Attach the terminal clamp on the other end
of the cable to the positive battery terminal,
or to the corresponding jump-start terminal
of the vehicle to be started.
4. Attach one terminal clamp of the negative
jumper cable to the negative battery termi-
nal, or to the corresponding engine or body
ground of assisting vehicle.
5. Attach the second terminal clamp to the
negative battery terminal, or to the corre-
sponding engine or body ground of the ve-
hicle to be started.
Starting the engine
Never use spray fluids to start the engine.
1. Start the engine of the assisting vehicle and
let it run for several minutes at an increased
idle speed.
If the vehicle to be started has a diesel en-
gine: let the engine of the assisting vehicle
run for approx. 10 minutes.
2. Start the engine of the vehicle that is to be
started in the usual way.
If the first attempt to start the engine is not
successful, wait a few minutes before mak-
ing another attempt in order to allow the
discharged battery to recharge.
3. Let both engines run for several minutes.
4. Disconnect the jumper cables in the reverse
order.
Check the battery and recharge, if needed.
Tow-starting and towing
Safety information
Warning
Individual functions may not work correctly
when towing with Forward Collision Mitiga-
tion enabled or Cruise Control switched on.
There is a risk of accident. Switch off Forward
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