Mercedes-Benz G-Class Operator's Manual page 252

Warning and indicator lamps in the instrument cluster
250
Problem
!
The yellow ABS warning
lamp is lit while the
engine is running.
Possible causes/consequences and M Solutions
ABS (Anti-lock Brake System) is deactivated due to a malfunction.
BAS (Brake Assist), ESP
function, hill start assist, the adaptive brake lights and ESP
stabilization, for example, are therefore also deactivated.
G
WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
®
If ESP is not operational, ESP
There is an increased risk of skidding and an accident.
X
Observe the additional display messages in the multifunction
display.
X
Drive on carefully.
X
Visit a qualified specialist workshop.
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic
transmission, will not be available.
®
(Electronic Stability Program), the HOLD
®
is unable to stabilize the vehicle.
®
trailer