Seat belt

Problem Possible causes/consequences and Solutions
starting the

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
starting the

After starting the engine, the red seat belt warning lamp lights up. In addition, a warning tone sounds for up to six seconds.

 The driver's seat belt is not fastened. Risk of injury

The driver's seat belt is not fastened.
The warning tone ceases. Fasten your seat belt.
The warning tone ceases.
The red seat belt

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.

 The driver or front passenger has not fastened their seat belt. Risk of injury

The driver or front passenger has not fastened their seat belt.
The warning lamp goes out. Fasten your seat belt.
The warning lamp goes out.
There are objects on the front-passenger seat. Risk of injury

There are objects on the front-passenger seat.
front-passenger seat and stow Remove the objects from the front-passenger seat and stow them in a secure place.
The warning lamp goes out.
The red seat belt

The red seat belt warning lamp flashes and an intermittent audible warning sounds.

 The driver or front passenger has not fastened their seat belt. In 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).
The warning lamp goes out and the intermittent warning tone Fasten your seat belt.
The warning lamp goes out and the intermittent warning tone ceases.
There are objects on the front-passenger seat. In addition, you are 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).
front-passenger seat and stow 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:

    Calling up a stored setting
    ► Press and hold the relevant storage position button 1, 2 or 3 until the seat, steering wheel and exterior mirrors are in the stored position. The setting procedure is interrupted as soon ...

    Automatic transmission
    Shift the transmission to position P. The transmission position display in the multifunction display shows P. You can also start the engine when the transmission is in position N. ...

    Active multicontour seat
    The dynamic function of the active multicontour seat automatically adapts the side bolsters of the backrest to your current driving style. Select the seat. Select Dynamic Seat by sliding o ...