Owners Manual

Problem Possible causes/consequences and M Solutions
!
The yellow ABS
indicator lamp is
lit while the
engine is
running.
G
Risk of accident
ABS has been deactivated due to undervoltage. The battery may
not be being charged.
The brake system continues to function normally, but without
electronic support. The wheels could therefore lock, e.g. if the
brakes are applied with maximum force.
X
Drive on with care.
X
Visit a qualified specialist workshop immediately.
å
The yellow DEF
indicator lamp
lights up while
the engine is
running.
The exhaust gas aftertreatment is malfunctioning or the current
Diesel Exhaust Fluid (DEF) supply is limiting the vehicle range.
X
Observe the messages in the display (Y page 201).
h
The yellow ESP
®
indicator lamp is
lit while the
engine is
running.
G
Risk of accident
ESP
®
has been deactivated due to a malfunction. As a result,
cruise control has also been deactivated.
The vehicle's stability is no longer automatically regulated at an
early stage. Engine power output may be reduced.
X
On vehicles with steering wheel buttons, also observe the
messages in the display (Y page 199).
X
Drive on with care.
X
Consult a qualified specialist workshop as soon as possible.
h
The yellow ESP
®
indicator lamp is
lit while the
engine is
running.
G
Risk of accident
ESP
®
has been deactivated due to undervoltage. As a result, cruise
control has also been deactivated.
The battery may not be being charged.
The vehicle's stability is no longer automatically regulated at an
early stage. Engine power output may be reduced.
X
Drive on with care.
X
Consult a qualified specialist workshop as soon as possible.
192
Troubleshooting
Practical advice