Instrument panel
Description and roadside assistance
45
Guidelines for Breakdown Services (Subject to technical modifications)
i
Automatic transmission indicator lamp
Risk of accident and injury
G
The operational safety of your vehicle may be impaired if service work is not carried out properly. There is a
risk that you could lose control of the vehicle and cause an accident. Also the safety systems may not protect
you or others as they are supposed to.
Always have service work performed at a qualified specialist workshop possessing the required expertise and
tools in order to perform the necessary work.
Mercedes-Benz recommends a Mercedes-Benz service center for this work.
In particular, it is absolutely essential that all safety-relevant work and all work on safety-relevant systems is
performed by a qualified specialist workshop.
Problem
Possible cause/con-
sequence
Suggested solutions
The indicator
lamp
7
in the
instrument panel
lights up.
If the indicator lamp
7
is constantly lit,
the transmission oil
temperature in the
automatic
transmission is too
high.
왘
Switch off retarder.
왘
Stop the vehicle as soon as possible taking into account
the traffic situation.
왘
Apply parking brake and shift automatic transmission to
neutral.
왘
Run engine at a speed of 1200 – 1500 rpm for 2 – 3 min-
utes and then switch off engine.
왘
If the transmission oil temperature does not drop, check
transmission oil level, see page 50.
왘
If the fault reoccurs, contact a qualified specialist work-
shop.
The display shows
AGN
.
The automatic
transmission has a
malfunction.
A specialist workshop may be able to help you continue
your journey with certain limitations if you give them the
fault code.
To display the fault code:
왘
Press the automatic transmission buttons
j
and
k
simultaneously twice.
The display shows the number of the fault code, e.g. D1,
and then a 5-digit fault code, e.g. P 25 11, in
succession.
왘
Press the MODE button to display the next fault code. A
maximum of 5 fault codes can be stored.
To exit the fault code:
왘
Press the automatic transmission buttons
j
and
k
simultaneously or select any gear button.