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Engine, On-board computer and displays – Mercedes-Benz 2013 GLS Class User Manual

Page 302

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Problem

Possible causes/consequences and M Solutions

J
The red brake system
warning lamp comes on
while the vehicle is
moving. A warning tone
also sounds.

You are driving with the parking brake applied.

X

Release the parking brake.
The warning lamp goes out and the warning tone ceases.

6
The red SRS warning
lamp is lit while the
engine is running.

There is a malfunction in SRS (Supplemental Restraint System).

G

WARNING

The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.

X

Drive on carefully.

X

Have SRS checked at a qualified specialist workshop immedi-
ately.

For further information about the Supplemental Restraint System;
see (

Y

page 43).

Engine

Problem

Possible causes/consequences and M Solutions

;
The yellow engine diag-
nostics warning lamp
lights up while the
engine is running.

There may be a fault, for example:

R

in the engine management

R

in the fuel injection system

R

in the exhaust system

R

in the ignition system (for vehicles with petrol engines)

R

in the fuel system

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
specialist workshop.

Vehicles with a diesel engine: the fuel tank has been run dry
(

Y

page 179).

X

Start the engine three to four times after refuelling.
If the yellow engine diagnostics warning lamp goes out, emer-
gency running mode is cancelled. The vehicle need not be
checked.

300

Warning and indicator lamps in the instrument cluster

On-board computer and displays