Extending and retracting the front diffuser
Requirements:
The vehicle is parked on a vehicle lift, ramp or similar and the adjustable front diffuser can be accessed from below.
To extend:
pull levers 
down. Adjustable front diffuser 
will be released.
Pull front diffuser out as far as it will go and into the front detent under the vehicle using levers .
out as far as it will go and into the front detent under the vehicle using levers . Push levers up.
up. Check that front diffuser is engaged.
is engaged. If the front diffuser is not engaged, the front diffuser warning lamp will light up on the instrument cluster:
Make sure that front diffuser is engaged.
is engaged. When the front diffuser is extended, a corresponding message will appear on the multifunction display with each ignition cycle and when the driver's door is closed.
Acknowledge the message using the Touch Control.
Note the restricted ground clearance when the front diffuser is extended.
To retract:
pull levers down and release front diffuser . Slide front diffuser under the vehicle as far as it will go and into the rear detent using levers .
under the vehicle as far as it will go and into the rear detent using levers . Push levers up.
up. Check that front diffuser is engaged.
is engaged. If the front diffuser is not engaged, the front diffuser warning lamp will light up on the instrument cluster:
Make sure that front diffuser is engaged.
is engaged.