Mercury 135 Verado Manual page 89

FEATURES AND CONTROLS
2. Intermittent short beeps for six seconds: Indicates a
non‑critical engine condition. This condition does not require
immediate attention. You may continue using your boat,
however, depending on the nature of the problem, the
engine's power may be limited by the Engine Guardian
System (see Engine Guardian System following) to protect the
engine. You should contact your servicing dealer at your
earliest convenience.
It is important to note that in either of the above scenarios, the horn
will only sound one time. If you key the engine off and re‑start it,
the horn will sound again, one time, if the fault is still present. For
visual display of the specific engine functions and additional engine
data, refer to SmartCraft Product information, following.
A few of the non‑critical conditions indicated by the intermittent
short beeps for six seconds can be corrected by the operator.
These operator correctable conditions are as follows:
• Water in the engine mounted fuel filter. Refer to Maintenance
– Water Separating Fuel Filter
• Cooling system (water pressure or engine temperature)
problem. Stop the engine and check the water intake holes in
the lower unit for obstruction
• Low engine oil level. Refer to Fuel and Oil – Checking and
Adding Engine Oil.
ENGINE GUARDIAN SYSTEM
The Engine Guardian System monitors the critical sensors on the
engine for any early indications of problems. Engine Guardian is
functional whenever your engine is operating, so you never have
to be concerned about whether or not you are protected. The
system will respond to a problem by sounding the warning horn for
six seconds and/or reducing engine power in order to provide
engine protection.
If the Guardian System has been activated, reduce throttle speed.
The problem will need to be identified and corrected, if possible.
The system must be reset before the engine will operate at higher
speeds. Moving the throttle lever back to the idle position will reset
the system.
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