LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 2025 >> Sprinter 3500XD Van Cargo Extended, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1848 (Information System And Entertainment System) >> Diagnostic Tests >> Information and Entertainment System - Navigation >> Inspection and Verification >> Self Diagnostics >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Self Diagnostics: Notes

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

The navigation system provides internal diagnostics to assist with diagnosing vehicle concerns.

NOTE: The navigation system CD must be inserted into the audio unit before the self diagnostics can be activated.

To access the diagnostics functions the following steps must be performed:

  1. Press the soft key number 1 button (MENU).
    2. Fig 1: MENU Button
    GF0025908Courtesy of FORD MOTOR CO.
  2. Press the soft key number 5 button (System Options).
    3. Fig 2: System Options Button
    GF0025909Courtesy of FORD MOTOR CO.
  3. Press and hold the soft key number 1 button (MENU) and the soft key number 6 button for approximately 10 seconds.
    4. Fig 3: MENU Button & System Options Button
    GF0025910Courtesy of FORD MOTOR CO.
  4. Press the soft key number 6 button (Diagnostics).
    5. Fig 4: Diagnostics Button
    GF0025911Courtesy of FORD MOTOR CO.
  5. Press the enter button.
    6. Fig 5: Enter Button
    GF0025912Courtesy of FORD MOTOR CO.

    The following diagnostic functions are available:

DIAGNOSTIC FUNCTIONS

Function Purpose
DISPLAY Test screen integrity by displaying different bitmap/color combinations.
DISTANCE PARAMETER Allows review and setting of the distance calibration parameter.
GPS GPS Test - Test the GPS receiver and display retrieved data.
GPS Init - Re-initialize the GPS and determine position from scratch.
GYRO Test function and connectivity of the gyroscope.
GYRO FACTORS View/adjust the gyroscope scaling factor.
KEY Test the bezel keyboard.
REVERSE SIGNAL Indicates if the reverse signal is active/detected.
SPEED SENSOR Verifies connection and calibration of the vehicle speed input.
VOICE & SOUND Vocalize sound bites to test the voice guidance system.
CDROM status Test the CD-ROM and inserted media.
ERASE ALL MEMORY Erase all the navigation parameter data.
CD map (rs232 out) Map media integrity and output results via the RS232 port
DEMO MODE Activate a mode in which the system simulates speed inputs.
Disable/Enable Lockout Enable/disable lockout (development units only).
ERROR LOG View history of critical system failures
Back Light View backlight control information.
Speaker Walkaround Performs the speaker walkaround test.
scientia non olet · About LEMON Manuals