Nissan Sentra B18 (2020-2025) Owner's Manual: Illustrated table of contents
This illustrated table of contents helps Nissan Sentra owners quickly locate key vehicle components and safety systems. Each section provides a clear visual reference, making everyday use, inspection, and understanding of the Nissan Sentra more intuitive and convenient.
Air bags, seat belts and child restraints

This section highlights the primary passive safety systems of the Nissan Sentra, including air bags, seat belts, and child restraint anchor points, designed to help protect all occupants in various driving conditions.
- Top tether anchors for securely installing child restraint systems
- Rear seat belts designed for rear passenger protection
- Roof-mounted curtain side-impact and supplemental rollover air bag
- Head restraints/headrests for front and rear seating positions
- Front seat belt with pretensioner(s) and shoulder height adjuster
- Supplemental front-impact air bags for driver and front passenger
- Front passenger supplemental knee air bag
Driver supplemental knee air bag - Front seats with integrated safety features
- Occupant classification sensor (weight sensor) for air bag deployment control
- Front seat-mounted side-impact supplemental air bag
- Rear seats designed for comfort and safety
- LATCH (Lower Anchors and Tethers for CHildren) system
- Rear outboard seat belts with pretensioner(s)
- Rear outboard seat-mounted side-impact supplemental air bag
Exterior front

The exterior front overview of the Nissan Sentra identifies essential components related to visibility, access, and daily vehicle operation.
- Engine hood providing access to the engine compartment
- Wiper and washer switch for windshield cleaning
- Windshield designed for optimal driver visibility
- Power windows with driver and passenger controls
- Doors
NISSAN Intelligent Key
Keys - Mirrors
Side view camera (if so equipped) - Tire pressure information
Flat tire guidance
Tire chains compatibility - Headlight and turn signal switch
Replacing bulbs
LED Daytime Running Lights (DRL) (if so equipped) - Front view camera (if so equipped)
Exterior rear

This section presents the rear exterior features of the Nissan Sentra, focusing on visibility, access, and safety assistance systems.
- Rearview camera for easier parking and reversing
- Trunk lid
Trunk lid release - High-mounted stop light for improved braking visibility
- Replacing bulbs in rear lighting assemblies
- Rear window defroster switch
- Satellite antenna for communication and infotainment systems
- Child safety rear door lock
- Fuel-filler door
Fuel-filler cap
Fuel recommendation - Rear sonar sensors to assist with parking
Passenger compartment

The passenger compartment illustration of the Nissan Sentra shows the main interior comfort and convenience features available to occupants.
- Interior lights for front and rear seating areas
- Moonroof (if so equipped)
- Interior lights
- Sun visors with mirrors (if so equipped)
- Rearview mirror
- Glove box for document storage
- Cup holders for front passengers
- Parking brake
- Console box for additional storage
- Rear armrest (if so equipped)
Cup holders (if so equipped)
Instrument panel

This instrument panel overview helps Nissan Sentra drivers quickly identify switches, displays, and controls essential for safe vehicle operation.
- Headlight/turn signal switch
- Steering wheel switch
Audio controls - Driver's supplemental air bag
Horn - Meters and gauges
Warning and indicator lights
Vehicle information display - Cruise control switches
Intelligent Cruise Control (ICC) switches (if so equipped)
Bluetooth Hands-Free Phone System - Wiper and washer switch
- Vents
- Idling Stop OFF switch (if so equipped)
- Hazard warning flasher switch
- Front passenger air bag status light
- Audio system
- Front passenger supplemental air bag
- Glove box
- Front passenger supplemental knee air bag
- Shift lever
- Push-button ignition switch
- Climate controls
- Driver supplemental knee air bag
- Tilt/Telescopic steering
- Hood release
- Fuel filler door release
- ECO mode switch
Instrument brightness control
Trunk release
Trip reset switch
Engine compartment check locations

2.0L 4 cylinder (MR20DD engine model)
This illustration shows the main service and inspection points in the Nissan Sentra engine compartment, allowing owners to perform basic checks with confidence.
- Engine oil filler cap
- Brake and clutch (if so equipped) fluid reservoir
- Fuse and relay box
- Battery
- Air cleaner
- Engine oil dipstick
- Drive belt location
- Windshield-washer fluid reservoir
- Engine coolant reservoir
NOTE:
Your Nissan Sentra may not be equipped with an engine cover, depending on model and market specifications.
Warning/Indicator lights
This section explains the warning and indicator lights displayed on the instrument panel of the Nissan Sentra. These symbols provide important information about vehicle status, safety systems, and potential malfunctions that require driver attention.
Warning/ Indicator light (red)
or
Brake warning light
This red warning light indicates a potential issue with the braking system of the Nissan Sentra, such as low brake fluid level or a malfunction that requires immediate inspection.
Charge warning light
The charge warning light alerts the driver to a possible problem with the charging system, including the battery or alternator, and should not be ignored while driving the Nissan Sentra.
Engine oil pressure warning light
This warning light signals low engine oil pressure. If it illuminates while driving the Nissan Sentra, the engine should be stopped as soon as it is safe to do so.
Malfunction Indicator Light (MIL) (if so equipped)
The MIL indicates that the engine management or emissions system of the Nissan Sentra has detected a malfunction requiring diagnosis.
Master warning light
This light provides a general alert that one or more vehicle systems need attention and should be checked using the vehicle information display.
Seat belt warning light and chime
The seat belt warning light and audible chime remind occupants to fasten their seat belts for proper protection while driving the Nissan Sentra.
Supplemental air bag warning light
This light indicates a potential issue with the supplemental restraint system, including air bags or pretensioners, and should be inspected promptly.
Warning/ Indicator light (yellow)
or
Anti-lock Braking System (ABS) warning light
The ABS warning light indicates a malfunction in the anti-lock braking system of the Nissan Sentra, while normal braking ability remains available.
Automatic Emergency Braking with Pedestrian Detection system warning light
This indicator warns of a malfunction in the Automatic Emergency Braking system with Pedestrian Detection, which assists the Nissan Sentra driver in reducing collision risk.
Front passenger air bag status light
This light shows whether the front passenger air bag is activated or deactivated based on occupant detection.
Low tire pressure warning light
The low tire pressure warning light informs the driver that one or more tires of the Nissan Sentra are underinflated.
Malfunction Indicator Light (MIL) (if so equipped)
This yellow MIL serves as an emissions-related warning and should be checked as soon as possible.
Master warning light
This version of the master warning light indicates cautionary alerts that do not require immediate stopping.
Power steering warning light
This light indicates a possible issue with the electric power steering system, which may affect steering effort.
Rear Automatic Braking system warning light
This warning light indicates a malfunction in the Rear Automatic Braking system designed to assist during reverse maneuvers.
Slip indicator light
The slip indicator light flashes when traction control systems are actively assisting vehicle stability.
Vehicle Dynamic Control (VDC) OFF indicator light
This indicator shows that the Vehicle Dynamic Control system has been manually turned off.
Warning/ Indicator light (other)
ECO mode indicator light (green) (if so equipped)
The ECO mode indicator lights up when fuel-efficient driving mode is active in the Nissan Sentra.
High Beam Assist indicator light (green) (if so equipped)
This indicator confirms that the High Beam Assist system is operating to improve nighttime visibility.
High beam indicator light (blue)
The blue high beam indicator shows that the high-beam headlights are currently in use.
Side light and headlight indicator light (green)
This indicator confirms that the side lights or headlights of the Nissan Sentra are switched on.
Turn signal/ hazard indicator lights (green)
The turn signal and hazard indicators flash to show the intended direction or emergency signaling.
Idling Stop System indicator light (green)
This indicator shows when the Idling Stop System is active to help improve fuel efficiency.
Other materials:
Removal and Installation
Av Control Unit
Exploded View
Exploded View
1.
Audio unit bracket (LH)
2.
Audio unit
3.
...
Intelligent Key System All Functions Cannot Operate (all Keys)
Description
Description
Intelligent Key system all functions cannot
operate (door lock and engine start).
SYMPTOM TABLE (BOTH INTELLIGENT KEYS HAVE
THE SAME SYMPTOMS)
Door lock operation (remote
k ...
Chime Does Not Sound
Diagnosis Procedure
Diagnosis Procedure
The warning chime may not sound in some cases when there is a
short distance between vehicles. Some examples are:
When the Nissan Sentra vehicles are traveling at the same speed and the
distance between vehicles is not changing.
...