Hazard warning flashers

The button is located in the center console.
See also:
BMW Assist or ConnectedDrive
...
Maintaining current speed
Push, arrow 1, or pull, arrow 2, the lever to the
resistance point.
The car's current speed is stored and maintained.
It is displayed on the speedometer and
briefly in the instrument cluster.
O ...
Interior
The 135i's interior design is fairly traditional, with more upright shapes
than sweeping contours. Dual-zone climate controls sit below the center air
vents and optional navigation system, with BM ...
