BMW M4 COUPE Owner's Manual page 365

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 cover of the starting aid terminal.
2. Attach one terminal clamp of the positive
jumper cable to the positive battery terminal,
or to the corresponding starting aid terminal
of the vehicle providing assistance.
3. Attach the terminal clamp on the other end of
the cable to the positive battery terminal, 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 battery terminal,
or to the corresponding engine or body
ground of assisting vehicle.
5. Attach the second terminal clamp to the neg‐
ative battery terminal, 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 increased
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 successful,
wait a few minutes before making another at‐
tempt 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.
Breakdown Assistance
Online Edition for Part no. 01405A38097 - VI/21
Tow-starting and towing
Safety information
Warning
Due to system limits, individual functions can
malfunction during tow-starting/towing with the
Intelligent Safety systems activated. There is a
risk of accident. Switch all Intelligent Safety
systems off prior to tow-starting/towing.
Manual transmission
Safety information
NOTICE
The vehicle can become damaged when lifting
and securing it.
There is a risk of damage to property, among
other potential damage.
▷ Lift the vehicle using suitable means.
▷ Do not lift or secure the vehicle by its tow
fitting, body parts, or suspension parts.
Towing or pushing the vehicle
A broken-down vehicle can be towed or pushed.
Follow the following instructions:
▷ Make sure that the standby state is switched
on; otherwise, the low beams, tail lights, turn
signals, and wipers may be unavailable.
▷ Do not tow the vehicle with the rear axle
tilted, as the front wheels could turn.
▷ When the engine is stopped, there is no
power assist. Consequently, more force
needs to be applied when braking and steer‐
ing.
▷ Larger steering wheel movements are re‐
quired.
MOBILITY
365