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