Mercedes-Benz 2013 SL Operator's Manual page 537

Switch off all electrical consumers (e.g. radio, blower, etc.).
X
Open the hood ( page 512).
X
Y
Position number B identifies the charged battery of the other vehicle or an equivalent jump-
starting device.
Press cover : of positive terminal ; down (in the direction of the arrow) and turn it
X
clockwise. Cover : is held down in the lowered position, which exposes positive
terminal ;.
Connect positive terminal ; on your vehicle to positive terminal = of donor battery B
X
using the jumper cable, always begin with positive terminal ; on your own vehicle first.
Start the engine of the donor vehicle and run it at idling speed.
X
Connect negative terminal ? of donor battery B to ground point A of your vehicle using
X
the jumper cable, connecting the jumper cable to donor battery B first.
Start the engine.
X
Before disconnecting the jumper cables, let the engine run for several minutes.
X
First, remove the jumper cables from earth point A and negative terminal ?, then from
X
positive clamp ; and positive terminal =. Begin each time at the contacts on your own
vehicle first.
After removing the jumper cables, press down cover : of positive terminal ; and turn it
X
counter-clockwise. Cover : returns to its original position. Positive terminal ; is covered
up and thus insulated again.
Have the battery checked at a qualified specialist workshop.
X
i
Jump-starting is not considered to be a normal operating condition.
i
Jumper cables and further information regarding jump starting can be obtained at any
qualified specialist workshop.
Jump-starting
Z
535