Nissan Altima (L34) 2019-2024 Owners Manual: Traffic Sign Recognition (TSR) (if so equipped)

The TSR system provides the driver with information about the most recently detected speed limit. The system captures the road sign information with the multi-sensing front camera unit A located on the windshield in front of the inside rearview mirror and displays the detected signs in the vehicle information display. For vehicles equipped with a navigation system, the speed limit displayed is based on a combination of navigation system data and live camera recognition. TSR information is always displayed at the top of the vehicle information display, and optionally in the main central area of the display screen.

WARNING

The TSR system is only intended to be a support device to help provide the driver with information. It is not a replacement for the driver’s attention to traffic conditions or responsibility to drive safely. It cannot prevent accidents due to carelessness. It is the driver’s responsibility to stay alert and drive safely at all times.

System operation

The Traffic Sign Recognition (TSR) system displays the following types of road signs:

CAUTION

• The TSR system is intended as an aid to careful driving. It is the driver’s responsibility to stay alert, drive safely, and observe all road regulations that currently apply, including looking out for road signs.
• The TSR system may not function properly under the following conditions:
  • When the road sign is not clearly visible, for example, due to damage or weather conditions.
  • When rain, snow or dirt adheres to the windshield in front of the multi-sensing camera unit.
  • When the headlights are not bright, for example, due to dirt on the lens or if the aiming is not adjusted properly.
  • When strong light enters the camera unit. (For example, the light directly shines on the front of the vehicle at sunrise or sunset.)
  • When a sudden change in brightness occurs. (For example, when the vehicle enters or exits a tunnel or under a bridge.)
  • If there are deviations in relation to the navigation, for example due to changes in the road routing.
  • When overtaking buses or trucks with speed stickers.

Turning the Traffic Sign Recognition (TSR) system on and off

Perform the following steps to enable or disable the TSR system.

1. Press thebutton until "Settings" displays in the vehicle information display.

Use the button to select "Driver Assistance." Then press the OK button.

2. Select "Speed Limit Sign" and press the OK button to turn the system on or off.

System temporarily unavailable

If the vehicle is parked in direct sunlight under high temperature conditions (over approximately 104ºF [40ºC] ) and then started, the TSR system may be deactivated automatically. The "Unavailable: High Cabin Temperature" warning message will appear in the vehicle information display.

Action to take:

When the interior temperature is reduced, the TSR system will resume operating automatically.

System malfunction

If the TSR system malfunctions, it will be turned off automatically and the system "Malfunction" warning message will appear in the vehicle information display.

Action to take:

If the TSR "Malfunction" message appears, pull off the road at a safe location and stop the vehicle. Turn the engine off and restart the engine. If the TSR "Malfunction" message continues to appear, have the system checked. It is recommended that you visit a NISSAN dealer for this service.

System maintenance

The TSR system uses the same multisensing front camera unit that is used by the Lane Departure Warning (LDW) system, located in front of the interior rearview mirror.

For additional information, see "System maintenance".