Nissan Sentra B18 (2020-2025) Owner's Manual: Other supplemental front-impact air bag precautions
WARNING
- Do not place any objects on the steering wheel pad or on the instrument panel of the Nissan Sentra. In addition, do not place any objects between any occupant and the steering wheel or instrument panel. Such objects may become dangerous projectiles and cause serious injury if the front air bags deploy.
- Immediately after air bag inflation, several components of the front air bag system will be extremely hot. Avoid touching these components, as doing so may result in severe burns.
- No unauthorized modifications should be made to any components or wiring
of the supplemental air bag system.
This precaution helps prevent accidental air bag deployment or damage to the Supplemental Restraint System (SRS).
- Do not make unauthorized changes to the vehicle’s electrical system, suspension system, or front-end structure. Such modifications may negatively affect proper front air bag operation in the Nissan Sentra.
- Tampering with the front air bag system may result in serious personal injury. This includes modifications to the steering wheel or instrument panel, placing material over the steering wheel pad, above the instrument panel, or installing additional trim material around air bag system components.
- Removing or modifying the front passenger seat may adversely affect the function of the air bag system and could result in serious personal injury.
- Modifying or tampering with the front passenger seat may also cause serious personal injury. For example, do not change the front seats by adding materials to the seat cushion or installing seat covers or trim that are not specifically designed to support proper air bag operation. Additionally, do not store any objects under the front passenger seat or between the seat cushion and seatback. These objects may interfere with proper operation of the occupant classification sensor (weight sensor).
- No unauthorized changes should be made to any components or wiring of the seat belt system. Such changes may affect the operation of the front air bag system. Tampering with the seat belt system may result in serious personal injury.
- It is recommended that you visit a NISSAN dealer for any service work on or around the front air bag system. It is also recommended that a NISSAN dealer perform the installation of any electrical equipment. The Supplemental Restraint System (SRS) wiring harnesses* must not be modified or disconnected. Unauthorized electrical test equipment or probing devices should never be used on the air bag system.
- A cracked windshield should be replaced immediately by a qualified repair facility. A damaged windshield may affect proper operation of the supplemental air bag system in the Nissan Sentra.
*The SRS wiring harness connectors are yellow and orange for easy identification.
When selling your Nissan Sentra, please inform the new owner about the front air bag system and direct them to the appropriate sections of this Owner’s Manual for important safety information.

Front and rear outboard seat-mounted side-impact supplemental air bag and roof-mounted curtain side-impact and rollover supplemental air bag systems
The side air bags are located in the outer portions of the seatbacks of the front and rear outboard seats in the Nissan Sentra. The curtain air bags are installed in the side roof rails. All information, cautions, and warnings in this manual must be carefully followed. The side air bags and curtain air bags are designed to inflate in higher-severity side collisions, although they may also deploy if collision forces are similar to those of a higher-severity impact. These air bags are designed to inflate on the side of the vehicle that is impacted. They may not inflate in all side collisions.
Curtain air bags are also designed to deploy in certain rollover or near-rollover situations. As a result, specific vehicle movements, such as severe off-road maneuvers, may cause the curtain air bags to inflate.
Vehicle damage, or the absence of visible damage, does not always indicate whether the side air bag or curtain air bag systems have operated properly.
When the side air bags and curtain air bags deploy, a loud noise may be heard, followed by the release of a smoke-like substance. This substance is not harmful and does not indicate a fire. However, care should be taken to avoid inhaling it, as it may cause temporary irritation or choking. Occupants with respiratory conditions should seek fresh air promptly.
Side air bags, in combination with properly worn seat belts, help reduce impact forces to the chest and pelvic areas of front and rear outboard occupants. Curtain air bags help cushion impact forces to the heads of occupants in the front and rear outboard seating positions. These systems are designed to help save lives and reduce serious injuries, although deployment of side and curtain air bags may cause minor abrasions or other injuries.
Side air bags and curtain air bags in the Nissan Sentra are designed to supplement seat belts and do not provide restraint to the lower body.
For maximum protection in the Nissan Sentra, seat belts must be worn correctly at all times, and the driver, front passenger, and rear outboard occupants should sit upright and as far away as practical from the side air bag modules.
Rear seat passengers should be positioned as far away as reasonably possible from the door finishers and side roof rails. The side air bags and curtain air bags deploy very rapidly to help protect occupants. Due to this rapid deployment, the force of an inflating side air bag or curtain air bag may increase the risk of injury if an occupant is sitting too close to, leaning against, or directly contacting these air bag modules at the moment of inflation.
After a collision, the side air bag will deflate quickly once its protective function has been completed.
The curtain air bag will remain inflated for a short period of time to help provide continued head protection in certain impact or rollover scenarios.
The side air bags and curtain air bags operate only when the ignition switch of the Nissan Sentra is placed in the ON position.
After placing the ignition switch in the ON position, the supplemental air bag warning light illuminates. The supplemental air bag warning light will turn off after approximately 7 seconds if the system in the Nissan Sentra is functioning properly.
WARNING
- Do not place any objects near the seatbacks of the front or rear seats.
Also, do not place any objects such as umbrellas, bags, or other items between the front or rear door finishers and the front or rear seats. These objects may become dangerous projectiles and cause serious injury if a side air bag inflates in the Nissan Sentra.
- Immediately after deployment, several components of the side air bag and curtain air bag systems will be hot. Avoid touching these components, as doing so may result in severe burns.
- No unauthorized changes should be made to any components or wiring of the side air bag and curtain air bag systems. This precaution helps prevent accidental deployment or damage to the side air bag and curtain air bag systems.
- Do not make unauthorized modifications to the vehicle’s electrical system,
suspension system, or side body panels.
Such modifications could negatively affect proper operation of the side air bag and curtain air bag systems in the Nissan Sentra.
- Tampering with the side air bag system may result in serious personal injury. For example, do not modify the front or rear seats by placing materials near the seatbacks or by installing additional trim, such as seat covers, in areas where side air bags deploy.
- It is recommended that you visit a NISSAN dealer for any service work on or around the side air bag and curtain air bag systems. It is also recommended that a NISSAN dealer perform the installation of any electrical equipment. The SRS wiring harnesses* must not be modified or disconnected. Unauthorized electrical testing equipment or probing devices must never be used on the side air bag or curtain air bag systems.
* The SRS wiring harness connectors are yellow and orange for easy identification.
When selling your Nissan Sentra, please ensure that the new owner is informed about the side air bag and curtain air bag systems and is directed to the appropriate sections of this Owner’s Manual for important safety information.
Other materials:
Brake Fluid
Draining
Draining
CAUTION:
Before working, place the ignition switch in the
OFF position and disconnect the harness connector from the ABS
actuator and electric unit (control unit) or the negative battery
terminal. Refer to Battery Disconnect ...
Trunk Lamp Switch
Component Function Check
Component Function Check
CHECK FUNCTION
CONSULT
Select "Back door/trunk lid switch" in "Data
Monitor" mode of "BCM(TRUNK)".
Check that the f ...
Explanation of scheduled maintenance items
The following descriptions are intended to help you better understand the scheduled
maintenance items that must be inspected, serviced, or replaced at regular intervals
to keep your Nissan Sentra operating reliably and efficiently.
The maintenance schedule outlines the specific mileage and time ...