Owners Manual

Display messages Possible causes/consequences and M Solutions
The exhaust gas aftertreatment system is defective or an
emissions-relevant malfunction has occurred. The defect or
malfunction can result in damage to the exhaust gas
aftertreatment system.
X
Visit a qualified specialist workshop immediately.
¯
StArtS RExx
In addition, the yellow å DEF indicator lamp lights up and a
warning tone sequence sounds.
The DEF supply has dropped below the 0.8 US gal (3.0 l) reserve
mark.
After the message appears for the first time, the remaining DEF
supply will last for approximately 1000 miles (1600 km) and the
engine can then only be started another 16 times.
The number of remaining engine starts xx (16 to 0) is shown in the
message every time the engine is started. Once the number 0 is
shown, the yellow ; engine diagnosis indicator lamp lights up
and the engine can no longer be started.
X
Add at least 2.0 US gal (7.6l) of DEF (Y page 143).
After refilling, the system check takes approximately
20 seconds. The å DEF indicator lamp then goes out.
Text messages on vehicles with steering wheel buttons
Display messages Possible causes/consequences and M Solutions
ABS
Visit workshop
G
Risk of accident
ABS has been deactivated due to a malfunction. ESP
®
, ASR and
BAS, as well as cruise control, have also been deactivated as a
result.
The brake system is still available with complete brake boosting
effect but without ABS.
X
Drive on carefully.
X
Visit a qualified specialist workshop immediately.
ABS
Unavailable
G
Risk of accident
ABS is temporarily unavailable. Self diagnosis may not have been
completed yet.
The brake system is still available with the normal braking effect.
X
Drive a short distance at a speed above 13 mph (20 km/h).
ABS is available again if the display message goes out.
Troubleshooting
203
Practical advice
Z