Display messages
Possible causes/consequences and
M
M
Solutions
The yellow
!
warning lamp lights up and the red
F
(USA
only) or
!
(Canada only) indicator lamp flashes.
It is not possible to apply the electric parking brake manually.
X
Shift the transmission to position
j
.
X
Visit a qualified specialist workshop.
$
(USA only)
J
(Canada only)
Check Brake Fluid
Check Brake Fluid
Level
Level
There is not enough brake fluid in the brake fluid reservoir.
In addition, the
$
(USA only) or
J
(Canada only) warning
lamp lights up in the instrument cluster and a warning tone sounds.
G
WARNING
The braking effect may be impaired.
There is a risk of an accident.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X
Secure the vehicle against rolling away (
Y
page 146).
X
Consult a qualified specialist workshop.
X
Do not add brake fluid. This does not correct the malfunction.
#
Check Brake Pad
Check Brake Pad
Wear
Wear
The brake pads/linings have reached their wear limit.
X
Visit a qualified specialist workshop.
PRE-SAFE Inopera‐
PRE-SAFE Inopera‐
tive See Opera‐
tive See Opera‐
tor's Manual
tor's Manual
Important functions of PRE-SAFE
®
have failed. All other occupant
safety systems, e.g. air bags, remain available.
X
Visit a qualified specialist workshop immediately.
Active Brake
Active Brake
Assist Functions
Assist Functions
Currently Limited
Currently Limited
See Operator's Man‐
See Operator's Man‐
ual
ual
Active Brake Assist is temporarily inoperative.
Possible causes are:
R
the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio stations
or other sources of electromagnetic radiation
R
the system is outside the operating temperature range
R
the on-board voltage is too low
When the causes stated above no longer apply, the display message
disappears.
Active Brake Assist is operational again.
If the display message does not disappear:
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Secure the vehicle against rolling away (
Y
page 146).
X
Restart the engine.
Display messages
211
On
-b
oar
d
comp
ut
er
an
d
di
sp
lay
s
Z
Summary of Contents for SL 450 2019
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