Mercedes-Benz 2012 A Class - Manual (Page 258)

Display messages Possible causes/consequences and M Solutions
&
inoperative See
Owner's Man.
The auxiliary heating has a temporary malfunction or is faulty.
X When the vehicle is on a level surface and the engine has cooled
down, make up to four attempts to switch on the auxiliary heat-
ing, waiting several minutes between each attempt
(
Y page 134).
X If the auxiliary heating does not switch on, consult a qualified
specialist workshop.
Telephone No
service
Your vehicle is outside the network provider's transmitter/
receiver range.
X Wait until the mobile phone operational readiness symbol
appears in the multifunction display.
¥
Top up washer fluid
The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
i If, during the winter months, you do not add antifreeze to the
washer fluid, it may freeze in the washer fluid container. In this
case, the
Top up washer fluid display message may appear
in the multifunction display.
X Top up the washer fluid ( Y page 289).
Wiper malfunction‐
ing
The windscreen wipers are defective.
X Visit a qualified specialist workshop.
Hazard warning
lamps malfunction‐
ing
The hazard warning lamps are faulty.
X Visit a qualified specialist workshop.
Key
Display messages Possible causes/consequences and M Solutions
+
Key does not
belong to vehicle
You have put the wrong key in the ignition lock.
X Use the correct key.
+
Replace key
The key needs to be replaced.
X Visit a qualified specialist workshop.
256
Display messages
On-board computer and displays