Seat belt

Problem Possible causes/consequences and •► Solutions

engine, the red seat 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.

•► Fasten your seat belt

engine, the red seat 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.

•► Fasten your seat belt.

The warning tone ceases.

warning lamp lights up 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.

•► Fasten your seat belt.

The warning lamp goes out.

Risk of injury
 There are objects on the front-passenger seat.

•► Remove the objects from the front-passenger seat and stow them in a secure place.

The warning lamp goes out.

warning lamp flashes 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).

•► Fasten your seat belt.

The warning lamp goes out and the intermittent warning tone ceases.

Risk of injury
 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).

•► Remove the objects from the front-passenger seat and stow them in a secure place.

The warning lamp goes out and the intermittent warning tone ceases.

    See also:

    Operation
    Depending on the date of manufacture of your vehicle, the or symbol for the automatic headlamp mode/daytime running lamps is located on the light switch. Illustration: light switch with the ...

    Premium-grade unleaded gasoline
    To ensure the longevity and full performance of the engine, only premiumgrade unleaded gasoline may be used. If there is no premium-grade unleaded gasoline available and regular-grade unle ...

    Important safety notes
    For reasons of safety, Mercedes-Benz recommends that you drive with the lights switched on even during the daytime. In some countries, operation of the headlamps varies due to legal requirements a ...