BMW C 400 X Rider's Manual page 130

Requirement
8
After run-on time expires
128
Bring radio-operated key into
reception range.
Slowly pull the lug 1 upward
and let it go again.
The indicator light for the
radio-operated key flashes as
long as the radio-operated key
z
is being searched for.
Slowly pull the lug 1 of the gas
cap upward again.
Fuel filler cap unlocked.
Open fuel filler cap completely.
Refuel with a fuel meeting the
specifications above, continu-
ing until fuel is no higher than
lower edge of filler neck.
NOTICE
When refueling after running on
fuel reserve, the resulting total
fuel quantity must be greater
than the fuel reserve, so that the
new filling level is detected and
the fuel warning light is switched
off.
https://www.motorcycle-manual.com/
NOTICE
The "usable fuel quantity" spec-
ified in the technical data is the
fuel quantity, which can be re-
fueled if the fuel tank was com-
pletely emptied, i.e., if the engine
dies off due to lack of fuel.
Fuel tank capacity
Approx. 3.4 gal (Approx.
12.8 l)
Reserve quantity
Approx. 1.1 gal (Approx. 4 l)
Pull the lug of the gas cap up-
ward.
Press the gas cap down firmly.
Fuel filler cap audibly engages.
Fuel filler cap automatically
locks after run-on time expires.