Acura MDX Owner's Manual page 24

Why does the beeper
sound when I turn the
engine off?
Why do I hear a screeching
sound when I apply the
brake pedal?
Unleaded gasoline with a
Pump Octane Number
(PON) of 91 or higher is
recommended.
Is it possible to use
unleaded gasoline with a
Pump Octane Number
(PON) of 87 or higher on
this vehicle?
The beeper sounds when you turn off the engine with the
driver's door open.
The brake pads may need to be replaced. Have your vehicle
inspected by a dealer.
Unleaded gasoline with a Pump Octane Number (PON) of 91 or
higher is recommended.
Use of lower octane gasoline can cause occasional metallic
knocking noise in the engine and will result in decreased engine
performance.
Use of gasoline with a pump octane less than 87 can lead to
engine damage.
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