Owners Manual

Problem Possible causes/consequences and M Solutions
The engine does not
start.
The starter motor
cannot be heard. The
yellow ; check
engine indicator lamp
and the yellow å
DEF indicator lamp
6
lights up.
The exhaust gas aftertreatment is faulty, an emission-relevant
malfunction has occurred or the DEF reserve has been used up.
The engine management prevents the engine from starting.
This malfunction or malfunction can damage the exhaust gas
aftertreatment.
X
Observe the messages in the display:
R
on vehicles without steering-wheel buttons (Y page 201)
R
on vehicles with steering-wheel buttons (Y page 204) and
(Y page 206).
The engine does not
start.
The starter motor
cannot be heard.
The battery isolating switch is switched off.
X
Switch on the power supply (Y page 91).
The engine does not
start.
The starter motor
cannot be heard.
The on-board voltage is too low (the battery is too weak or
discharged).
X
Jump-start the vehicle (Y page 253).
If the engine does not start despite attempts to jump-start it:
X
Consult a qualified specialist workshop.
The engine does not
start.
The starter motor
cannot be heard.
The battery is discharged or faulty.
X
Check the battery for damage.
X
Charge the battery (Y page 181).
The engine does not
start.
The starter motor
cannot be heard.
The starter is faulty.
X
Have the starter checked at a qualified specialist workshop.
Automatic transmission
G
WARNING
If service work is not carried out correctly, the operating safety of your vehicle may be affected.
This could cause you to lose control of your vehicle and cause an accident. Moreover, the safety
systems may no longer be able to protect you or others as they are designed to do.
Always have service work carried out at a qualified specialist workshop.
6
Only vehicles without steering-wheel buttons.
216
Troubleshooting
Practical advice