Mercedes-Benz GLK-Class: Warning and indicator lamps in the instrument cluster
Seat belt
| Display messages | Possible causes/consequences and Solutions |
 After starting the engine, the red seat belt warning lamp lights up for six seconds. |
The seat belt warning lamp reminds the driver and front
passenger to fasten their seat belts.
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After starting the engine, the red seat belt warning lamp lights up. In addition, a warning tone sounds for up to six seconds. |
Risk of injury The driver's seat belt is not fastened.
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The red seat belt warning lamp lights up after the engine starts, as soon as the driver's or the front-passenger door is closed. |
Risk of injury The driver or front passenger has not fastened
their seat belt.
There are objects on the front-passenger seat.
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The red seat belt warning lamp flashes and an intermittent audible warning sounds. |
Risk of injury The driver or front passenger has not fastened their seat belt. In addition, you are driving faster than 15 mph (25 km/h) or you have briefly driven faster than 15 mph (25 km/h).
There are objects on the front-passenger seat. In addition, you are driving faster than 15 mph (25 km/h) or you have briefly driven faster than 15 mph (25 km/h).
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Safety systems
WARNING
Driving with the brake warning lamp illuminated can result in an accident. Have your brake system checked immediately if the brake warning lamp stays on. Do not add brake fluid before checking the brake system.
Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts and the brake fluid catching fire. You can be seriously burned.
| Display messages | Possible causes/consequences and Solutions |
 The red brake system warning lamp comes on while the engine is running. A warning tone also sounds. |
Risk of accident There is not enough brake fluid in the brake fluid reservoir.
Do not add brake fluid. This will not correct the malfunction. |
 The yellow ABS warning lamp is lit while the engine is running. |
Risk of accident ABS (Anti-lock Brake System) is deactivated due to a malfunction. ESP® (Electronic Stability Program), BAS (Brake Assist), hill start assist and ESP® trailer stabilization, for example, are therefore also deactivated, for example. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example.
If the ABS control unit is faulty, there is also a possibility that other systems, such as the navigation system or the automatic transmission, will not be available. |
The yellow ABS warning lamp is lit while the engine is running. |
Risk of accident ABS is temporarily unavailable. ESP®, BAS, EBD (electronic brake force distribution), hill start assist and ESP® trailer stabilization, for example, are therefore also unavailable. Self diagnosis is not yet complete. For example, the on-board voltage may be insufficient. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example.
If the warning lamp is still on:
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The yellow ABS warning lamp is lit while the engine is running. A warning tone also sounds. |
Risk of accident EBD is faulty. Therefore, ABS, BAS, hill start assist and ESP® trailer stabilization, for example, are also not available due to a malfunction. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example.
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The red brake warning lamp, the yellow ESP® and ESP® OFF warning lamps and the yellow ABS warning lamp are lit while the engine is running. |
Risk of accident ABS and ESP® are faulty. Therefore, BAS, EBD, hill start assist and ESP® trailer stabilization, for example, are also not available due to a malfunction. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example.
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 The yellow ESP® warning lamp flashes while the vehicle is in motion. |
Risk of accident ESP® or traction control has intervened because there is a risk of skidding or at least one wheel has started to spin. Cruise control is deactivated.
For exceptions: (). |
The yellow ESP® warning lamp flashes while the vehicle is in motion. |
At least one wheel is spinning and the electronic traction
system is deactivated to prevent the brakes on the drive wheels from overheating.
The electronic traction system switches back on again as soon as the
brakes have cooled down. The display message disappears and the
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 The yellow ESP® OFF warning lamp is lit while the engine is running. |
Risk of accident ESP® and ESP® trailer stabilization are deactivated. ESP® will not stabilize the vehicle if it starts to skid or if a wheel starts to spin.
If ESP® cannot be activated:
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The yellow ESP® and ESP® OFF warning lamps are lit while the engine is running. |
Risk of accident ESP®, BAS, hill start assist and ESP® trailer stabilization are not available due to a malfunction. ESP® will not stabilize the vehicle if it starts to skid or if a wheel starts to spin. The brake system continues to function normally, but without the functions listed above.
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The yellow ESP® and ESP® OFF warning lamps are lit while the engine is running. |
Risk of accident ESP®, BAS, hill start assist and ESP® trailer stabilization are temporarily unavailable. ESP® is temporarily unavailable. ESP® will not stabilize the vehicle if it starts to skid or if a wheel starts to spin. Self diagnosis is not yet complete. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example.
If the warning lamp is still on:
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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.
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 The red SRS warning lamp is lit while the engine is running. |
Risk of injury The restraint systems are malfunctioning. The air bags or ETDs may either be triggered unintentionally or, in the event of an accident, not be triggered at all.
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Engine
| Display messages | Possible causes/consequences and Solutions |
 The yellow Check Engine warning lamp lights up while the engine is running. |
There may be a malfunction, for example:
The emission limit values may be exceeded and the engine may be running in emergency mode.
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 The yellow
reserve fuel warning lamp flashes while the vehicle is in motion. In addition,
the yellow Check Engine warning lamp
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The fuel system pressure is too low. The fuel filler cap
is not closed correctly or the fuel system is leaking.
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The yellow reserve fuel warning lamp lights up while the engine is running. |
The fuel level has dropped into the reserve range.
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 The red coolant warning lamp lights up while the engine is running and the coolant temperature gauge is at the start of the scale. |
The temperature sensor for the coolant temperature gauge
is defective. The coolant temperature is no longer being monitored. There is a risk of engine damage if the coolant temperature is too high.
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The red coolant warning lamp comes on while the engine is running. |
The coolant level is too low. If the coolant level is correct, the airflow to the engine radiator may be blocked or the electric engine radiator fan may be malfunctioning. The coolant is too hot and the engine is no longer being cooled sufficiently.
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The red coolant warning lamp comes on while the engine is running. A warning tone also sounds. |
The coolant temperature has exceeded 248 ‡ (120 † ). The
airflow to the engine radiator may be blocked or the coolant level may be
too low. The engine is not being cooled sufficiently and may be damaged.
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In some states, you are required by law to immediately visit a qualified
specialist workshop as soon as the yellow Check Engine warning lamp lights
up. If in doubt, check whether such legal regulations apply in the state/province
in which you are currently driving.WARNING
Driving when your engine is overheated can cause some fluids which may have leaked into the engine compartment to catch fire. You could be seriously burned. Steam from an overheated engine can cause serious burns which can occur just by opening the engine hood. Stay away from the engine if you see or hear steam coming from it. Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the vehicle and do not stand near the vehicle until the engine has cooled down.
If the coolant temperature exceeds 248 ‡(120 †) do not continue driving. The
engine will otherwise be damaged.
Tires
| Display messages | Possible causes/consequences and Solutions |
 USA only: The yellow tire pressure monitor warning lamp (pressure loss/ malfunction) is lit. |
Risk of accident The tire pressure monitor has detected a loss of pressure in at least one of the tires.
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USA only: The yellow tire pressure monitor warning lamp (pressure loss/ malfunction) flashes for 60 seconds and then remains lit. |
The tire pressure monitor is defective.
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WARNING
Each tire, including the spare (if provided), should be checked every other week when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the Tire and Loading Information placard on the driver's door B-pillar or, if available, the tire inflation pressure label on the inside of the fuel filler flap. If your vehicle has tires of a different size than the size indicated on the Tire and Loading Information placard or, if available, the tire inflation pressure label, you should determine the proper tire inflation pressure for those tires.
As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pressure warning lamp when one or more of your tires are significantly underinflated. Accordingly, when the low tire pressure warning lamp illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure.
Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability. Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver's responsibility to maintain correct tire pressure, even if underinflation has not reached the level to trigger illumination of the TPMS low tire pressure warning lamp.
Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly. The TPMS malfunction indicator is combined with the low tire pressure warning lamp. When the system detects a malfunction, the warning lamp will flash for approximately one minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator is lit, the system may not be able to detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of reasons, including the installation of incompatible replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction warning lamp after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly.
Engine
See also:
Child safety
- Never hold a child on your lap or
in your arms while the vehicle is
moving. The passenger cannot
protect the child from injury in a
collision, because the child will
be caught between the passenger
and objects inside the vehicle.
- ...
Anti-lock brake system (ABS)
Environmental conditions can have an effect on braking. During sudden braking
when there is snow, ice, oil, water etc. on the road surface, a skid may occur.
In this situation, steering control and braking effectiveness is reduced and the
stopp ...
