Switching the hazard warning light system on/off
WARNING Risk of accident due to concealed lighting systems
If you open the rear-end doors by 90°, the rear lighting systems will be concealed.
Other road users will then not be able to see the vehicle, or will see it only with difficulty.
Therefore, in these or similar situations, safeguard the vehicle in accordance with national regulations, e.g. with a warning triangle.
Press button 
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. If you operate a turn signal indicator while the hazard warning light system is switched on, only the turn signal lamps on the relevant side of the vehicle will light up.
The hazard warning light system will switch on automatically in the following situations:
The airbag is deployed
The vehicle is heavily braked from a speed of more than 70 km/h to a standstill.
The hazard warning light system will automatically switch off when the vehicle regains a speed of more than 10 km/h after maximum full-stop braking.