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 MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 657 (AUTOMATIC TRANSAXLE/TRANSMISSION - FNR5)GENERAL PROCEDURESTRANSMISSION RANGE (TR) SENSOR ADJUSTMENT

2010 Mercury Mariner Hybrid, AWD

Transmission Range (TR) Sensor Adjustment

2010 Mercury Mariner Hybrid, AWDSECTION Transmission Range (TR) Sensor Adjustment

WARNING: This page is about a different car, the 2006 Mercury Milan and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

SPECIAL TOOL

Alignment Tool, Transmission Range Sensor
307-571

With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING & LIFTING .
Disconnect the transmission range (TR) sensor electrical connector and the selector lever cable end.

Fig 1: Locating Transmission Range (TR) Sensor Electrical Connector And Selector Lever Cable End
Courtesy of FORD MOTOR CO.

NOTE: Failure to hold the shift lever, while loosening or tightening the manual shaft lever, will transmit rotational torque to the TR switch and shift mechanism causing internal damage.

Loosen the TR sensor (the automatic transaxle is shown removed for clarity).
1. Remove the nut and the manual control lever.
2. Loosen the TR sensor bolts.
  
  Fig 2: Identifying Manual Control Lever Nut And TR Sensor Bolt
  Courtesy of FORD MOTOR CO.
Using the special tool, align the TR sensor and tighten the bolts.
- Tighten to 10 Nm (89 lb-in).
  
  Fig 3: Identifying Special Tool And TR Sensor Bolts
  Courtesy of FORD MOTOR CO.

CAUTION: Do not use air tools on this nut. Hold the manual control lever, while tightening the manual control lever nut, failure to the manual control lever shaft or the TR sensor could occur.

Install the manual control lever.
- Tighten to 22 Nm (16 lb-ft).
  
  Fig 4: Locating Manual Control Lever Nut
  Courtesy of FORD MOTOR CO.

CAUTION: Check to make sure the manual control lever is in position "2" (same as "D" position).

Adjust the manual control lever to TR sensor D position.
1. L (LOW)
2. D (DRIVE)
3. N (NEUTRAL)
4. R (REVERSE)
5. P (PARK)
- When in position D the marks on the manual control lever line up with the marks on the TR sensor.
  
  Fig 5: Identifying Manual Control Lever Position Mark On TR Sensor
  Courtesy of FORD MOTOR CO.
Connect the selector lever cable and the TR sensor electrical connector.

Fig 6: Identifying Selector Lever Cable And TR Sensor Electrical Connector
Courtesy of FORD MOTOR CO.

RENDER: 1.0x

NO RELATED

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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.