BMW 323i Owner's Manual page 230

Possible displays
1 Oil level OK
2 Oil level is being checked.
This can take about 3 minutes if the car is at
a standstill on a level surface, or about
5 minutes while the car is on the move.
3 Oil level down to minimum:
Add engine oil as soon as possible, but no
more than 1 US quart/1 liter, refer also to
Adding engine oil on page 229.
4 Oil level is too high.
Too much oil will harm the engine.
Have the vehicle checked without
delay.<
5 The oil level sensor is defective.
Do not add engine oil. You can continue
your journey. Note the newly calculated dis-
tance remaining to the next oil service, refer
to page 76. Have the system checked as
soon as possible.
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Display via iDrive
1. "Vehicle Info"
2. "Vehicle status"
3. "Engine oil level"
Possible messages
> "Engine oil level OK"
> "Measurement not possible at this time."
> "Measuring engine oil level...":
This can take about 3 minutes if the car is at
a standstill on a level surface and the engine
is running, and about 5 minutes while the
car is moving.
If engine oil was added, it may take up to
30 minutes to obtain an oil level reading.
> "Engine oil level below minimum. Add 1
quart!"
Add engine oil as soon as possible, but no
more than 1 US quart/1 liter, refer also to
Adding engine oil below.
If the oil level is below the minimum value,
add engine oil immediately to avoid engine
damage.
>
"Engine oil level too high! Have this
checked."