How to replace Vehicle Speed Sensor on Mercury Mariner?

This procedure is only applicable to those models with an automatic transaxle. Leading the process, ensure that you remove the cable that is connected to the negative terminal of the battery. You shall loosen the lugs nuts of the left front wheel, lift the car and put it on the jack stands and then proceed to remove the left front wheel. Next, unscrew the lower left splash shield and you will find the TSS sensor on left side of the transaxle. In order to remove the TSS sensor the electrical connector should be disconnected and the sensor mounting bolt should be removed. Put a drain pan below the TSS sensor to capture the automatic transmission fluid spill; thereafter, loosen the mounting bolt and the sensor. Make sure that the old TSS sensor O-ring is also removed before installing another O-ring on the TSS sensor; this must be done whether the TSS used is a new or a re-used one. Installation is the exact opposite of removal with the TSS sensor mounting bolt and LH wheel lug nuts being turned to the correct torque. After reconnecting the battery the PCM has to learn the new strategy for idle and fuel trim in order to have good driveability and performance.

Genuine Mercury Mariner Vehicle Speed Sensor

VSS

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4 Vehicle Speed Sensors found

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Mercury Mariner Sensor Assy - Engine Speed
Part Number: F8RZ-7H103-AA
$52.58 MSRP: $86.91
You Save: $34.33 (40%)
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Product Specifications
- Replaced by: 6L8Z-7H103-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2006 Mercury Mariner | 4 Cyl 2.3L, 6 Cyl 3.0L DOHC EFI Modular | 4AT CD4E, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)
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Mercury Mariner Sensor - Turbine Shaft Speed - TSS
Part Number: 1S7Z-7M101-KA
$25.03 MSRP: $40.55
You Save: $15.52 (39%)
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Product Specifications
- Other Name: Vehicle Speed Sensor
- Replaces: XS7Z-7M101-KA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2008 Mercury Mariner | 4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC, 6 Cyl 3.0L DOHC EFI Modular | 4AT CD4E, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)
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Mercury Mariner Sensor Assy - Engine Speed
Part Number: 6L8Z-7H103-AA
$54.49 MSRP: $86.91
You Save: $32.42 (38%)
Product Specifications
- Other Name: Vehicle Speed Sensor
- Manufacturer Note: Sensor - Output Shaft Speed
- Replaces: F8RZ-7H103-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2008 Mercury Mariner | 4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC, 6 Cyl 3.0L DOHC EFI Modular | 4AT CD4E, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)
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Mercury Mariner Sensor Assembly - Engine
Part Number: 9L8Z-7H103-A
Product Specifications
- Other Name: Sensor Assy - Engine Speed
- Manufacturer Note: Sensor - Output Shaft Speed
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2011 Mercury Mariner | 4 Cyl 2.5L Duratec (110kW/150PS), 4 Cyl 2.5L PFI Gas/Electric, 6 Cyl 3.0L OHC Duratec | 6-Speed Automatic Transmission 6F Mid-Range, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive

Mercury Mariner Vehicle Speed Sensor

The Mercury Mariner Vehicle Speed Sensor constantly monitors the frequency with which the output shaft rotates. This is so the transmission computer always knows the vehicle's road speed and can make the necessary internal shift adjustments when required for smooth, timely shifts. Located on the transmission case, the Vehicle Speed Sensor generates an electrical signal that rises and falls as a toothed reluctor ring rotates. This signal allows the PCM or TCM to control shift points, line pressure, and torque converter lockup based on actual vehicle movement. In the past, a simpler permanent magnet or reed style Vehicle Speed Sensor was applied, which would produce a raw sinusoidal waveform. However, on the later Mariner editions, an active Hall Effect style Vehicle Speed Sensor with onboard signal conditioning was adopted to provide a cleaner digital pulse. Due to this update, the Mercury crossover is capable of crisp shifting even at low speeds, adding better drivability and reliability for Mariner owners. The updated design is capable of tolerating a wider air gap, which prevents interference from occurring and creates fewer spurious signals. If the Vehicle Speed Sensor fails, any Mercury Mariner may default to limp mode and lose cruise control, making prompt replacement vital for every Mercury driver.

We provide a wide range of Mercury Mariner Vehicle Speed Sensor at the optimal prices. If you need Mercury Mariner Vehicle Speed Sensor, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your doorstep with a fast delivery service.

Mercury Mariner Vehicle Speed Sensor Parts Questions & Experts Answers

Sensor Assy - Engine Speed
F8RZ-7H103-AA
Q: How to replace Vehicle Speed Sensor on Mercury Mariner?
A:
This procedure is only applicable to those models with an automatic transaxle. Leading the process, ensure that you remove the cable that is connected to the negative terminal of the battery. You shall loosen the lugs nuts of the left front wheel, lift the car and put it on the jack stands and then proceed to remove the left front wheel. Next, unscrew the lower left splash shield and you will find the TSS sensor on left side of the transaxle. In order to remove the TSS sensor the electrical connector should be disconnected and the sensor mounting bolt should be removed. Put a drain pan below the TSS sensor to capture the automatic transmission fluid spill; thereafter, loosen the mounting bolt and the sensor. Make sure that the old TSS sensor O-ring is also removed before installing another O-ring on the TSS sensor; this must be done whether the TSS used is a new or a re-used one. Installation is the exact opposite of removal with the TSS sensor mounting bolt and LH wheel lug nuts being turned to the correct torque. After reconnecting the battery the PCM has to learn the new strategy for idle and fuel trim in order to have good driveability and performance.