Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1417 (AUTOMATIC TRANSMISSION EXTERNAL CONTROLS)DESCRIPTION & OPERATIONEXTERNAL CONTROLS - COLUMN SHIFTTRANSMISSION CONTROL (TC) SWITCH
2009 Mercury Milan Premier, 3.0 1, AWD
Transmission Control (TC) Switch
2009 Mercury Milan Premier, 3.0 1, AWDSECTION Transmission Control (TC) Switch
WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
The transmission control (TC) switch:
- is located on the end of the selector lever.
- The TC switch is not removable from the selector lever. Install a new selector lever if a new TC switch is required.
- is a momentary contact switch.
- commands the PCM to disengage or engage the overdrive function of the transmission.
- When Overdrive (Circle D) is disengaged, the message O/D OFF will illuminate on the instrument cluster (IC).
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.