BMW M2 Coupe Owner's Manual page 221

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 electronic systems/power
consumers in both vehicles.
Starting aid terminals
The starting aid terminal in the engine com‐
partment acts as the battery's positive termi‐
nal.
Open the cover of the starting aid terminal.
The body ground or a special nut acts as the
battery negative terminal.
Online Edition for Part no. 01402981836 - VI/17
Breakdown assistance
Connecting the cables
To prevent personal injury or damage to both
vehicles, adhere strictly to the following proce‐
dure.
1. Pull off the lid 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 assis‐
tance.
3. Attach the terminal clamp on the other end
of the cable to the positive terminal of the
battery, or to the corresponding 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 assisting vehicle.
5. Attach the second terminal clamp to the
negative terminal of the battery, or to the
corresponding engine or body ground of
the vehicle 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 in‐
creased idle speed.
2. Start the engine of the vehicle that is to be
started in the usual way.
If the first starting attempt is not success‐
ful, wait a few minutes before making an‐
other attempt in order to allow the dis‐
charged battery to recharge.
3. Let both engines run for several minutes.
4. Disconnect the jumper cables in the re‐
verse order.
Check the battery and recharge, if needed.
Mobility
221