Mercedes-Benz 300 E 1990 Owner's Manual page 72

If the charging voltage falls below
10 volts, the warning lamp comes
on and the ABS is switched off.
When the voltage is above this
value again, the warning lamp
should go out and the ABS will be
operational.
If the ABS warning lamp does not
go out or comes on while driving,
it indicates that the ABS has de­
tected a malfunction and has
switched off. In this case, the
brake system functions in the
usual manner, but without antilock
assistance. Have the system
checked at your authorized
MERCEDES-BENZ dealer as
soon as possible.
70
Warning!
Even the ABS cannot prevent
the natural laws of physics
from acting on the vehicle.
The ABS cannot prevent
accidents, including those
resulting from excessive
speed in turns, following an­
other vehicle too closely, or
aquaplaning. Only a safe,
attentive, and skillful driver
can prevent accidents. The
capabilities of an ABS equip­
ped car must never be ex­
ploited in a reckless or dan­
gerous manner which could
jeopardize the user's safety or
the safety of others.
Automatically Engaging
Four-wheel Drive (4MATIC)
The yellow function indicator lamp
in the speedometer and the yellow
4MATIC indicator lamp will come
on with the key in steering lock
position 2 and should go out with
the engine running.
When driving, the function in­
dicator lamp comes on as soon as
the front wheel drive, or the
differential locks are engaged.
The front-wheel drive as well as
the differential locks are auto­
matically engaged if road con­
ditions and driving style result in
wheel spin (difference in rpm
between the front and rear
wheels).
The illumination of the function
indicator lamp also informs the
driver that the tires have reached
their critical limits of traction.