Snowmobile Polaris Turbo IQ LXT (2014 year). Manual - part 9

39

FEATURES

Engine Management System

The engine management system is programmed to alert the rider when 
coolant temperatures reach higher-than-normal levels. The system 
responds by taking the following sequential steps to alert the rider.

1. The High Temperature Indicator on the MFD will flash.

To cool the engine, drive the snowmobile into soft snow so that it comes 
into contact with the heat exchangers on the snowmobile. Alternately, 
you can stop the snowmobile and pack snow or ice onto the heat 
exchangers to bring the temperature of the engine down.

2. The High Temperature Indicator on the MFD will flash and the 

engine will misfire or “stutter”.

If you do not notice the flashing indicator on the MFD or do not suffi-
ciently cool the snowmobile, the engine will misfire to alert you to look 
at the MFD and take action. Again, driving the snowmobile into soft 
snow or packing snow onto the heat exchangers should cool the engine.

3. The engine will stop.

If the engine reaches an extreme temperature where damage becomes 
possible, the system will stop the engine. This condition will occur only 
after the system has taken both previous steps to alert the rider to the 
extreme engine temperature. If the engine stops and you attempt to 
restart it while before it has cooled sufficiently, the engine will restart 
and run for two seconds but will immediately stop again.

The engine management system will also turn the engine off if the 
engine reaches an extreme temperature while idling. 

40

FEATURES

Knock Sensor (Turbo Models)

A knock sensor monitors the engine and responds to detonation by auto-
matically reducing the engine timing and adding fuel. This results in 
decreased engine RPM and performance.

Engine performance will be reduced if fuel with a lower octane than 91 
is used. See fuel recommendations on page 81.

Effect

The knock sensor system prevents damage to the engine from detona-
tion while developing the maximum power of the engine safely. If the 
system senses detonation beyond a preset limit, it retards ignition timing 
and adds fuel to reduce the detonation and prevent engine damage.

When the detonation returns to a permissible level, the system will 
return spark and fuel to normal, allowing the engine to run at rated 
power levels.

Fail-Safe

The knock sensor includes a sensor fail-safe system to prevent the 
engine from damage if the sensor fails, becomes disconnected or is 
unable to detect detonation. The rider will experience a loss in power. 
The sensor must be reconnected or repaired to regain full power.

The check engine light will illuminate if the sensor fails or becomes dis-
connected.

41

FEATURES

Instrumentation

MFD Component Identification

Digital Display Identification

Item

1

Analog Gauge

2

Digital Gauge

3

Check Engine Indicator

4

High Temp Indicator

5

Brake Indicator

6

Reverse Indicator

7

High Beam Indicator

Item

1

RPM or Speed
Altitude (if equipped)
Service Interval

2

Electrical System Voltage 
Level

3

MAX - Maximum MPH/

KPH or RPM

MPH - Miles per hour
KPH - Kilometers per hour
RPM - Engine crankshaft

revolutions per
minute

4

Air Temp (if equipped)
Engine Temp
Degrees Celsius
Degrees Fahrenheit

5

Miles/Kilometers

6

Hours
Trip 1/Trip 2/Trip F 
Service Label
Altitude Label

7

Fuel Level (FS) or Turbo Boost 
(Turbo models)

1

2

3

4

5

6

7

1

2

3

4

5

6

7

42

FEATURES

Instrumentation

MFD Settings

The MFD control switch allows you 
to set the MFD display to your pref-
erences. The rocker switch has a 
MODE button (top) and a SET but-
ton (bottom). Specific instructions 
are outlined on the following pages.

MFD settings can be made with the 
engine running or with the engine 
off. If the engine is off, make sure 
the stop switch is pressed down, and 
turn the ignition key to the START 
position briefly to activate the 
gauge. The gauge will illuminate for about 90 seconds.

Standard vs. Metric

The MFD will display either standard or metric units of measurement. 
While viewing a screen that displays measurements (MPH, km/h or 
temperatures), press and hold the MODE switch until the unit of mea-
surement changes (about 10 seconds). 

MFD Control Switch

SET

MODE