Emergency Starting - Porsche 911 2020 Owner's Manual

Emergency Starting

Emergency Starting
A
Depending on the model, country and equipment,
B
the vehicle features either a lead-acid battery with
C
AGM (Absorbent Glass Mat) technology or a 12-volt
lithium battery (LiFePO4).
D
On vehicles with lithium batteries, the battery is
E
marked with a sticker.
e Never remove or deface stickers or render them
F
illegible.
G
Emergency starting with a lead-
H
acid battery
I
b b Vehicle with lead-acid battery.
J
If the battery is flat, the battery of another vehicle
K can be used for starting and as an external power
supply with the help of jumper cables. Both batteries
L
must have a nominal voltage of 12 V. The capacity
(Ah) of the donor battery must not be substantially
M
less than that of the flat battery. The discharged
N
battery must be connected correctly to the vehicle's
electrical system.
O
> Please see chapter "Battery" on page 69.
P
Repeated emergency starting under normal operat-
ing conditions may indicate that the battery is
Q
damaged.
R
Unsuitable jumper ca-
WARNING
S
bles and following incor-
rect procedures
T
Starting the vehicle using unsuitable jumper cables
U
or following incorrect procedures can cause short
V
circuits. The short circuit can cause a fire.
e Use only standard jumper cables with sufficient
W
cross section and completely insulated clamps.
X
Follow the instructions provided by the jumper
Y
Z
118
cable manufacturer.
e The vehicles must not touch, otherwise current
may flow as soon as the positive terminals are
connected.
e Ensure that conductive jewelry (e.g. rings,
chains, watch straps) do not come into contact
with live parts of the vehicle.
e Never connect jumper cables directly to the bat-
tery. Only connect jumper cables to the emer-
gency starting terminals.
Charging a frozen
WARNING
battery
There is a risk of explosion and chemical burns when
charging a frozen battery.
e It is important to thaw out a frozen battery be-
fore attaching jumper cables.
Emergency starting a
WARNING
frozen or damaged
battery
When emergency starting a frozen or damaged bat-
tery, there is a danger of explosion and chemical
burns.
e Never emergency start a frozen or damaged
battery.
Corrosive electrolyte
CAUTION
Lead-acid batteries contain highly corrosive battery
acid that can injure the skin and damage clothing on
contact.
e Wear safety gloves and eye protection.
e If battery acid gets into your eyes or on your skin:
rinse with cold water for several minutes.
Performing emergency starting
Fig. 81: Lead-acid battery terminals
1. Open the luggage compartment.
> Please see chapter "Emergency unlocking of
the luggage compartment lid" on page 167.
2. Remove cover in luggage compartment.
> Please see chapter "Luggage Compartment"
on page 162.
3. Connect the red positive cable to the positive
terminal for emergency starting +.
4. Connect the red positive cable to the positive
terminal of the donor battery.
5. Connect the black negative cable to the negative