Problem Possible cause/consequence Suggested solutions
# - k 6
The yellow ESP
®
, ABS and
ASR/BAS indicator lamps, and
the red brake system warning
lamp light up while the engine is
running.
A warning tone also sounds.
G
Risk of accident
EBV has been deactivated due
to undervoltage.
The battery may not be being
charged.
The rear wheels could lock
sooner than expected when you
apply the brakes.
E Vehicles with steering wheel buttons: also observe the mes-
sages in the display (
e page 282).
E Drive on carefully.
E Visit a qualified specialist workshop immediately.
6 The red brake system
warning lamp is lit while
the engine is running.
A warning tone also
sounds.
G
Risk of accident
There is insufficient brake fluid
in the fluid reservoir.
E Vehicles with steering wheel buttons: also observe the mes-
sages in the display (
e page 282).
E Stop the vehicle immediately, paying attention to road and
traffic conditions.
E Check the brake fluid level in the reservoir (e page 252).
E If the brake fluid is below the MIN mark: do drive any further.
E Consult the nearest qualified specialist workshop.
E Do not top up the brake fluid. This does not solve the prob-
lem.
Practical advice
Troubleshooting
271
ee
5
Nur fuer internen Gebrauch
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