Make sure that windshield washer concen-
trate is not spilled in the vicinity of the filler
neck.
Example
X
To open: pull cap
:
upwards by the tab.
X
Add the premixed washer fluid.
X
To close: press cap
:
onto the filler neck
until it engages.
If the washer fluid level drops below the rec-
ommended minimum fluid level of 1 US qt
(1 liter), a message appears in the multifunc-
tion display prompting you to add washer fluid
(
Y
page 231).
Further information on windshield washer
fluid/antifreeze (
Y
page 325).
Overview of the engine compart-
ment
Example engine
:
Oil dipstick
;
Brake fluid reservoir
=
Engine oil cap
?
Coolant expansion tank
A
Washer fluid reservoir
ASSYST PLUS
Service display
The ASSYST PLUS service interval display indi-
cates the remaining time period or the remain-
ing distance to the next regular service due
date.
Information on the type of service and service
intervals (see the separate Maintenance Book-
let).
You can obtain further information from an
authorized Mercedes-Benz Center or at
http://www.mbusa.com (USA only).
i
The ASSYST PLUS service interval display
does not show any information on the
engine oil level. Observe the notes on the
engine oil level (
Y
page 266).
The multifunction display shows a service dis-
play for a few seconds, e.g.:
R
Service A in .. Days
Service A in .. Days
R
Service A Due
Service A Due
R
Service A Exceeded by .. Days
Service A Exceeded by .. Days
Depending on the operating conditions of the
vehicle, the remaining time or distance until
the next service due date is displayed.
The letter
AA
or
BB
, possibly in connection with a
number or another letter, shows the type of
service.
AA
stands for a minor service and
BB
for
a major service.
You can obtain further information from an
authorized Mercedes-Benz Center.
Depending on how the vehicle is used, the
ASSYST PLUS service interval display may
reduce the service interval, e.g. in the follow-
ing situations:
X
the vehicle is primarily used to travel short
distances
X
if the engine is often left idling for long peri-
ods
X
if there are frequent cold start phases
Mercedes-Benz recommends you avoid such
operating conditions.
The ASSYST PLUS service interval display does
not take into account any periods of time dur-
ing which the battery is disconnected.
ASSYST PLUS
269
Maintenance
and
care
Z
Summary of Contents for SL 450 2019
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