Mercedes-Benz 2013 CLA, Owner'S Manual

Page: 244 / 352

Display messages Possible causes/consequences and
M
Solutions
4
Check eng. oil
lev. when next
refuelling
The engine oil level has dropped to the minimum level.
A warning tone also sounds.
X
Check the oil level when next refuelling, at the latest
(
Y
page 284).
X
If necessary, top up the engine oil (
Y
page 285).
X
Have the engine checked at a qualified specialist workshop if
the engine oil needs topping up more often than usual.
æ
Reserve fuel level
The fuel level has dropped into the reserve range.
The auxiliary heating cannot be operated.
X Refuel at the nearest filling station.
ç There is very little fuel in the fuel tank.
The auxiliary heating cannot be operated.
X
Refuel at the nearest filling station without fail.
¸
Replace air
cleaner element
Vehicles with a diesel engine: the engine air filter is dirty and must
be replaced.
X
Visit a qualified specialist workshop.
!
Clean fuel filter
Vehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.
X
Visit a qualified specialist workshop.
Driving systems
Display messages Possible causes/consequences and
M
Solutions
À
Attention Assist
Drowsiness detec‐
ted
Based on certain criteria, ATTENTION ASSIST has detected fatigue
or a lack of concentration on the part of the driver. A warning tone
also sounds.
X
If necessary, take a break.
During long journeys, take regular breaks in good time so that you
get enough rest.
À
Attention Assist
inoperative
ATTENTION ASSIST is inoperative.
X Visit a qualified specialist workshop.
242
Display messages
On-board computer and displays