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Home >> Mercedes Benz >> 2025 >> eSprinter Base, _NA_ >> Repair and Diagnosis >> External Pages >> Different car >> Section 2340 (Transfer Case - Four-Wheel Drive (4WD) System - Diagnostics -- F250-F550 Super Duty) >> Diagnostic Tests >> Four Wheel Drive (4WD) Systems - Mechanical Shift >> Inspection and Verification

Inspection and Verification

WARNING: This page is about a different car, the 2009 Ford Pickup, 2009 Ford F550 Super Duty, 2009 Ford F450 Super Duty, and 2009 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Visually inspect for obvious signs of mechanical and electrical system concerns.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Front axle assembly
    • Manual hub locks
    • Shift lever and/or linkage
    • Driveshaft and U-joints
    • Fluid leaks
    • Matching tire size
    • Transfer case
    • Wiring harness
    • Mode indicator switch (MIS)
    • Connector(s)
    • Circuitry
  2. Carry out the Mechanical Shift-On-Stop (MSOS) Functional Test. Go to Pinpoint Test F .
  3. If the concern is still present after the Mechanical Shift-On-Stop (MSOS) Functional Test, go to Symptom Chart - Mechanical Shift .