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Home >> Mercedes Benz >> 2025 >> eSprinter Base, _NA_ >> Repair and Diagnosis >> External Pages >> Different car >> Section 2751 (Automatic Transmission - 5R110W (TORQSHIFT(R)) -- F250-F550 Super Duty) >> Description And Operation >> Transmission Electronic Control System >> Transmission Control Indicator Lamp (TCIL) >> Overdrive (O/D) OFF (Gasoline Engine Vehicles)

Overdrive (O/D) OFF (Gasoline Engine Vehicles)

WARNING: This page is about a different car, the 2010 Ford Pickup, 2010 Ford F550 Super Duty, 2010 Ford F450 Super Duty, and 2010 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

When the O/D  OFF switch is pressed, the TCIL  , located in the IC  , will illuminate the graphics O/D  OFF. Operation of the TCIL  is controlled by the PCM to alert the driver that O/D  OFF mode has been activated. Pressing the TCS  again will turn off the TCIL  and restore automatic upshifts, gears 1 through 6.

Turning off the engine will return the TCIL  to the default position and automatic upshifts, all forward gears 1 through 6 will be available.

The PCM may command steady illumination of the TCIL  if certain faults are detected in monitored sensors, solenoids or apply components.

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