Mercedes-Benz R-Class Owner's Manual page 287

Practical advice
Troubleshooting
Problem
± The yellow engine diagnos-
tics warning lamp comes
on while the engine is run-
ning.
± The yellow engine diagnos-
tics warning lamp comes
on while the engine is run-
ning.
H The yellow tyre pressure
monitor* warning lamp is
on.
< The red seat belt warning
lamp lights up for 6 sec-
onds after the engine
34
starts up .
34 Only for certain vehicles.
284
Possible cause/consequence
Vehicles with a diesel engine: the
fuel tank has run dry.
There may be a malfunction:
in the fuel injection system
R
in the exhaust system
R
in the ignition system (on vehi-
R
cles with a petrol engine)
The emission limit values may be
exceeded and the engine may be
running in emergency mode.
G Risk of accident
The tyre pressure monitor* has
detected a sudden or significant
pressure loss in at least one of
the tyres.
The seat belt warning lamp
reminds the driver and front
passenger to fasten their seat
belts.
Suggested solutions
Start the engine three to four times after refuelling.
X
Emergency running mode is cancelled. The vehicle need not be
checked.
Have the vehicle checked as soon as possible at a qualified spe-
X
cialist workshop.
Stop the vehicle without making any sudden steering or braking
X
manoeuvres. Pay attention to the traffic conditions as you do so.
Observe the additional messages in the multi-function display
X
( page 255).
Y
The warning light will go out after the flat tyre has been changed
and you have been driving for a few minutes.
Fasten your seat belt ( page 94).
X
Y
* optional