Mercedes-Benz M-Class 2012 Owners Manual - Manual (Page 269)

Display messages Possible causes/consequences and M Solutions
Phone 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.
¥
Check Washer Fluid
The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X Add washer fluid (
Y
page 315).
SmartKey
Display messages Possible causes/consequences and M Solutions
+
Key Does Not
Belong to Vehicle
You have put the wrong SmartKey in the ignition lock.
X Use the correct SmartKey.
+
Take Your Key from
Ignition
The SmartKey is in the ignition lock.
X
Remove the SmartKey.
+
Obtain a New Key
The SmartKey needs to be replaced.
X
Visit a qualified specialist workshop.
+
Replace Key Battery
The batteries of the KEYLESS-GO key are discharged.
X Change the batteries (
Y
page 75).
+
Don't Forget Your
Key
The display message is shown for a maximum of 60 seconds and
is only a reminder.
You have opened the driver's door with the engine switched off.
The KEYLESS-GO key is not in the ignition lock.
X
Remember to take the KEYLESS-GO key with you when you
leave the vehicle.
Display messages
267
On-board
computer
and
displays
Z