MERCEDES-BENZ GLS 2023 Owners Manual

Page 491 of 538

Warning/indicator lampPossible causes/consequences and P SolutionsStop immediately in accordance with the traPc conditions and switch oM the vehicle. Do not continue driving under
any circumstances.Note the messages on the instrument display.
If the coolant temperature display is at the lower end of the temperature scale:
Consult a qualiNed specialist workshop.
If the coolant temperature display is at the upper end of the temperature scale:
Exit the vehicle and keep a safe distance from it until the engine has cooled down.Check the coolant level (  page 343).Make sure that the air supply to the radiator is not obstructed.Avoiding high loads on the engine, drive to the nearest qualiNed specialist workshop. In doing so, ensure that the
coolant temperature display remains below the red area.

Page 492 of 538

Warning/indicator lampPossible causes/consequences and P Solutions

Page 493 of 538

Warning/indicator lampPossible causes/consequences and P Solutions

Page 494 of 538

BrakesWarning/indicator lampPossible causes/consequences and P Solutions
I
Electric parking brake indi-
cator lamp (red) (USA only)
$
Electric parking brake indi-
cator lamp (red) (Canada
only)
$ The electric parking brake
(yellow) indicator lamp
*The red electric parking brake indicator lamp Oashes or is lit.
The yellow electric parking brake indicator lamp is also lit in the event of a malfunction.Note the messages on the instrument display.492Display messages and warning/indicator lamps

Page 495 of 538

Warning/indicator lampPossible causes/consequences and P Solutions

Page 496 of 538

Warning/indicator lampPossible causes/consequences and P Solutions
'
Brake warning lamp (USA
only)
M
Brake system warning lamp
(Canada only)
*The red brake warning lamp is lit while the vehicle is running.
Possible causes:
= The brake force boosting is malfunctioning and the braking characteristics may be aMected.
= There is insuPcient brake Ouid in the brake Ouid reservoir.
Note the messages on the instrument display.&WARNING Risk of accident and injury if brake force boosting is malfunctioning
If brake force boosting is malfunctioning, increased brake pedal force may be necessary for braking. The braking
characteristics may be impaired. The braking distance can increase in emergency braking situations.
Stop in a safe location immediately. Do not continue driving.Consult a qualiNed specialist workshop.&WARNING Risk of an accident due to low brake Ouid level
If the brake Ouid level is too low, the braking eMect and the braking characteristics may be impaired.
Pull over and stop the vehicle safely as soon as possible, paying attention to road and traPc conditions. Do not
continue driving under any circumstances.Consult a qualiNed specialist workshop.Do not add brake Ouid.494Display messages and warning/indicator lamps

Page 497 of 538

Driving systemsWarning/indicator lampPossible causes/consequences and P Solutions
/
Warning lamp for distance
warning function
*The red distance warning lamp lights up while the vehicle is in motion.The distance to the vehicle in front is too small for the speed selected.
If there is an additional warning tone, you are approaching an obstacle at too high a speed.
Be prepared to brake immediately.Increase the distance.
Function of Active Brake Assist (  page 235).

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Warning/indicator lampPossible causes/consequences and P Solutions

Page 499 of 538

Driving safety systemsWarning/indicator lampPossible causes/consequences and P Solutions
%
ABS warning lamp
*The yellow ABS warning lamp is lit while the vehicle is running.ABS is malfunctioning.
If an additional warning tone sounds, EBD is malfunctioning.
Other driving systems and driving safety systems may also be malfunctioning.
Note the messages on the instrument display.&WARNING There is a risk of skidding if EBD or ABS is malfunctioning
The wheels may lock during braking.
The steerability and braking characteristics are heavily impaired and the braking distance may increase. In addition, other driving safety systems are switched oM.
Drive on carefully.Have the brake system checked immediately at a qualiNed specialist workshop.

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Warning/indicator lampPossible causes/consequences and P Solutions

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