LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1449 (Body, Lock & Security System) >> Remote Keyless Entry System >> Key Fob Battery and Function Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Key Fob Battery and Function Check

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK KEY FOB BATTERY 
    1. Remove key fob battery. Refer to "KEY FOB BATTERY REPLACEMENT ".
    2. Measure voltage between battery positive and negative terminals.
      • Voltage : 2.5 - 3.0V 
    NOTE: Key fob does not function if battery is not set correctly.

    OK or NG 

    • OK : GO TO 2
    • NG : Replace battery.
    Fig 1: Measuring Voltage Between Battery Positive & Negative Terminals
    G02402375Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK KEY FOB FUNCTION 

    With CONSULT-II 

    Check key fob function in "DATA MONITOR" mode with CONSULT-II.

    When pushing each button of key fob, the corresponding monitor item should be turned as follows. 

    Fig 2: Monitor Item Condition Table
    G02402376Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 3: Scan Tool Display "Data Monitor"
    G02402377Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK : Key fob is OK.
    • NG : Replace key fob.