2019 NISSAN ALTIMA compression ratio

2 Instruments and controls
Instrument panel................................2-2
Meters and gauges ..............................2-4
Speedometer and odometer .................2-4
Tachometer ..................................2-6
Engine coolant temperature gauge ..........2-6
Fuel gauge ................................... 2-7
Distance To Empty (DTE) ...................... 2-7
Variable Compression Turbo
(if so equipped) ...............................2-8
Warning lights, indicator lights and audible
reminders .......................................2-9
Checking lights .............................. 2-10
Warning lights ............................... 2-10
Indicator lights .............................. 2-15
Audible reminders ........................... 2-18
Vehicle information display .....................2-19
How to use the vehicle information
display ...................................... 2-19
Startup display .............................. 2-20
Resetting the drive computer ................2-20
Oil control system (if so equipped) ...........2-21
Settings ..................................... 2-21
Vehicle information display indicators .......2-29
Vehicle information display warnings ........2-32 Security systems
............................... 2-39
Vehicle security system .....................2-39
NISSAN Vehicle Immobilizer System .........2-40
Wiper and washer switch .......................2-42
Switch operation ............................ 2-42
Rear window and outside mirror
(if so equipped) defroster switch ................2-43
Headlight and turn signal switch ...............2-43
Headlight control switch .....................2-43
Daytime Running Lights (DRL) system
(Type A) (if so equipped) .....................2-48
LED Daytime Running Lights (DRL)
system (Type B) (if so equipped) .............2-48
Instrument brightness control ...............2-49
Turn signal switch ........................... 2-49
Fog light switch (if so equipped) .............2-50
Horn ........................................... 2-50
He

ated seat switches (if so equipped) ..........2-51
Heated steering wheel switch (if so equipped) . . 2-52
Steering Assist switch (for vehicles with
ProPILOT Assist) (if so equipped) ................2-52
E-call (SOS) button (if so equipped) .............2-53
Rear Door Alert ................................. 2-53
Power outlet .................................... 2-54

VARIABLE COMPRESSION TURBO
(if so equipped)
Your engine is equipped with a variable
compression ratio system called “Variable
Compression Turbo”. This system can vary
the engine compression ratio continu-
ously.
According to driving conditions, the system
applies optimum compression ratio auto-
matically to achieve both high output and
high fuel economy efficiency.This is not a physical gauge. It is a display
option in the vehicle information display
that can be selected. For additional infor-
mation, refer to “Vehicle information dis-
play” in this section.
1Compression ratio status display
Displays the status of compression ra-
tio controlled by Variable Compression
Turbo. The lowest compression ratio
(8:1) and the highest (14:1) are displayed
as “Power” and ”Eco” respectively.
2Turbo charger boost pressure gauge
Displays the turbo charger boost pres-
sure.
NOTE:
Under some conditions, the compres-
sion ratio may not change. This is not a
malfunction of the system.
CAUTION
If the Variable Compression Turbo be-
comes faulty, the Malfunction Indicator
Light (MIL) may come on. For additional
information, refer to “Malfunction Indi-
cator Light (MIL)” in this section.
LIC3924
2-8Instruments and controls

The vehicle information display is located
to the lef t of the speedometer. It displays
such items as:∙ Vehicle settings
∙ Drive computer information
∙ Drive system warnings and settings (if so equipped)
∙ Cruise control system information
∙ Variable Compression Turbo informa- tion (if so equipped)
∙ NISSAN Intelligent Key® operation infor- mation ∙ Indicators and warning
∙ Tire pressure information
∙ Audio information
∙ Compass and navigation information (if
so equipped)
∙ ProPILOT (if so equipped)
∙ Driving Aids
∙ Odometer/twin trip odometer
∙ Distance to empty
∙ Clock and outside temperatureHOW TO USE THE VEHICLE
INFORMATION DISPLAY
The vehicle information display can be
changed using the
,, and OK buttons located on the
steering wheel.
1- Use these
buttons to navigate the vehicle infor-
mation display.
2OK - Change or select an item in the
vehicle information display.
3— Returns to the previous menu.
LIC3224LIC3566
VEHICLE INFORMATION DISPLAY
Instruments and controls2-19

ENGINE
ModelPR25DDKR20DDET
Type Gasoline, 4-cycle, DOHCGasoline, 4-cycle, DOHC
Cylinder arrangement 4-cylinder, inline4-cylinder, inline
Bore x Stroke in (mm) 3.504 x 3.937 (89.0 x 100.0)
when compression ratio = 8 in (mm)3.307 x 3.547 (84.0 x 90.1)
when compression ratio = 14 in (mm)3.307 x 3.500 (84.0 x 88.9)
Displacement cu in (cm
3)151.85 (2,488)
when compression ratio = 8 cu in (cm3)121.86 (1,997)
when compression ratio = 14 cu in (cm3)120.22 (1,970)
Firing order 1–3–4–21–3–4–2
Idle speed
CVT in N (Neutral) position No adjustment is necessary.
Ignition timing (degree B.T.D.C. at idle speed)
CO%atidle
Spark plug DXE22H11CDILKAR7N9HG
Spark plug gap (Nominal) in (mm)0.043 (1.1) 0.035 (0.9)
Camshaf t operation Timing chainTiming chain
This spark ignition system complies with the Canadian standard ICES-002.
SPECIFICATIONS
10-8Technical and consumer information