Mercury 225 Pro XS User Manual page 47

FEATURES AND CONTROLS
The warning horn will emit either a continuous beep or intermittent short
beeps. This will alert the operator and help identify the following listed
situations. Refer to the Troubleshooting section for specific information. For
visual display of the specific engine functions and for additional engine
data, refer to SmartCraft product information.
ENGINE GUARDIAN SYSTEM
The Engine Guardian System monitors the critical sensors on the engine
for any early indications of problems. The system will respond to a problem
by emitting a continuous beep and/or reducing engine power in order to
provide engine protection.
If Guardian System is activated, the system must be reset before the
engine will operate at higher speeds. Moving throttle lever back to idle, or
to the required reduced throttle position, resets the system.
Problem
Power Up/
System Check
During Engine
Break‑In
Low Oil in
Engine Oil Tank
Critically Low
Oil in Engine Oil
Tank
Oil Pump
Electrical
Failure
Throttle
Position Sensor
Failure
Overspeed
High Engine
Temperature
Low Block
Water Pressure
Faulty Sensor
(Block psi,
Coolant Temp)
Horn
Single Beep
No
4 Beeps... 2 Minutes
Off
Continuous Beep
Continuous Beep
Continuous
Intermittent Beeping
Continuous Beep
Continuous Beep
Continuous Beep
No
Monitor Guardian
Display Activated
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
39
Percentage of
Full Engine
Power
Available
N/A N/A
No 100%
Yes 95%
Yes 5%
Yes 5%
Yes 95%
Yes 65%
From 100%
Yes
down to 4%
From 100%
Yes
down to 4%
Yes 95%