2008 BMW M3 Owner's Manual - Page 139

2008 BMW M3 Manual

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Preparation 1. Check whether the battery of the other vehicle has a voltage of 12 volts and approximately the same capacitance in Ah. This information can be found on the battery. 2. Switch off the engine of the assisting vehicle. 3. Switch off any consumers in both vehicles. There must not be any contact between the bodies of the two vehicles, otherwise there is a danger of shorting.< Your BMW has a special nut as body ground or negative pole. Connecting jumper cables Connect the jumper cables in the correct order, so that no sparks which could cause injury occur.< Your BMW has a jump-starting connection in the engine compartment which acts as the battery's positive terminal, refer also to the Engine compartment overview on page 117. The cap is marked with +. 1. Pull the cap of the BMW jump-starting connection up to remove. Starting the engine 1. Start the engine of the donor vehicle and allow it to run for a few minutes at slightly increased idle speed. 2. Start the engine on the other vehicle in the usual way. If the first start attempt is not successful, wait a few minutes before another attempt in order to allow the discharged battery to recharge. 3. Let the engines run for a few minutes. 4. Disconnect the jumper cables by reversing the above connecting sequence. If necessary, have the battery checked and recharged. Never use spray fluids to start the engine.< 3. Attach the second terminal clamp of the plus/+ jumper cable to the positive terminal of the battery or a starting-aid terminal of the vehicle to be started. 4. Attach one terminal clamp of the minus/- jumper cable to the negative terminal of the battery or to an engine or body ground of the assisting vehicle. Observe the applicable laws and regulations for tow-starting and towing vehicles.< Do not transport any passengers other than the driver in a vehicle that is being towed.< 137 Online Edition for Part no. 01 41 0 014 960 - © 02/08 BMW AG Reference Mobility 2. Attach one terminal clamp of the plus/+ jumper cable to the positive terminal of the battery or a starting-aid terminal of the vehicle providing assistance. Tow-starting, towing away Driving tips Controls 5. Attach the second terminal clamp of the minus/- jumper cable to the negative terminal of the battery or to the engine or body ground of the vehicle to be started. At a glance

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Reference
At a glance
Controls
Driving tips
Mobility
137
Preparation
1.
Check whether the battery of the other
vehicle has a voltage of 12 volts and
approximately the same capacitance in Ah.
This information can be found on the bat-
tery.
2.
Switch off the engine of the assisting vehi-
cle.
3.
Switch off any consumers in both vehicles.
There must not be any contact between
the bodies of the two vehicles, otherwise
there is a danger of shorting.
<
Connecting jumper cables
Connect the jumper cables in the correct
order, so that no sparks which could
cause injury occur.
<
Your BMW has a jump-starting connection in
the engine compartment which acts as the bat-
tery's positive terminal, refer also to the Engine
compartment overview on page
117
. The cap is
marked with +.
1.
Pull the cap of the BMW jump-starting con-
nection up to remove.
2.
Attach one terminal clamp of the plus/+
jumper cable to the positive terminal of the
battery or a starting-aid terminal of the vehi-
cle providing assistance.
3.
Attach the second terminal clamp of the
plus/+ jumper cable to the positive terminal
of the battery or a starting-aid terminal of
the vehicle to be started.
4.
Attach one terminal clamp of the minus/–
jumper cable to the negative terminal of the
battery or to an engine or body ground of
the assisting vehicle.
Your BMW has a special nut as body ground
or negative pole.
5.
Attach the second terminal clamp of the
minus/– jumper cable to the negative termi-
nal of the battery or to the engine or body
ground of the vehicle to be started.
Starting the engine
1.
Start the engine of the donor vehicle and
allow it to run for a few minutes at slightly
increased idle speed.
2.
Start the engine on the other vehicle in the
usual way.
If the first start attempt is not successful,
wait a few minutes before another attempt
in order to allow the discharged battery to
recharge.
3.
Let the engines run for a few minutes.
4.
Disconnect the jumper cables by reversing
the above connecting sequence.
If necessary, have the battery checked and
recharged.
Never use spray fluids to start the
engine.
<
Tow-starting, towing away
Observe the applicable laws and regula-
tions for tow-starting and towing vehi-
cles.
<
Do not transport any passengers other
than the driver in a vehicle that is being
towed.
<
Online Edition for Part no. 01 41 0 014 960 - © 02/08 BMW AG