Troubleshooting
296
Problem
Possible cause/consequence Suggested solutions
Vehicles with a petrol engine:
The engine is not running
smoothly and is misfiring.
There is a malfunction in the
engine electronics or a mechani-
cal component of the engine con-
trol unit.
X
Only depress the accelerator pedal slightly.
X
Have the cause rectified immediately at a qualified specialist work-
shop.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
A coolant temperature of over
120 °C is displayed. The coolant
warning lamp may also be on and
a warning tone may sound
(
Y
page 120).
The coolant level is too low. The
coolant is too hot and the engine
is no longer being cooled suffi-
ciently.
X
Stop as soon as possible and allow the engine and the coolant to
cool down.
X
Check the coolant level (
Y
page 225). Observe the warning notes
as you do so and top up the coolant if necessary.
If the coolant level is correct, the
radiator fan may be faulty. The
coolant is too hot and the engine
is no longer being cooled suffi-
ciently.
X
If the coolant temperature is less than 120 °C, you can continue
driving to the nearest qualified specialist workshop.
X
Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop/start driving.
Practical advice
211_AKB; 2; 5, en-GB
mkalafa,
Version: 2.9.4
2008-02-29T16:57:07+01:00 - Seite 296
Dateiname: 6515_3416_02_buchblock.pdf;
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