HomeTire and Wheel > SensorsStandard Ignition ALS501 Tire Pressure Monitoring System Sensor - Rear Left
Part #: ALS501

Standard Ignition ALS501 Tire Pressure Monitoring System Sensor - Rear Left

Rear Left
⚙️ 10 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford and Mercury, Five Hundred, Freestyle, and Montego
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Reliable TPMS Sensor for Ford and Mercury Vehicles

The Standard Ignition ALS501 Tire Pressure Monitoring System (TPMS) Sensor is designed to provide accurate tire pressure readings for select Ford and Mercury models. Engineered for durability and precise fitment, this sensor helps maintain optimal tire performance and safety.

  • Connector Gender: Female
  • Single round connector with 43.5-inch (1104.9 mm) harness length
  • Bolt mount installation with one bolt hole for secure wheel attachment
  • Terminal Type: Two male pin terminals for reliable electrical connection
  • Mounting Location: Wheel-mounted sensor for direct tire pressure monitoring
  • Mounting Hardware: Not included, allowing use of existing hardware

Detailed Product Description

The Standard Ignition ALS501 TPMS sensor is specifically designed for compatibility with Ford Five Hundred, Mercury Montego, and Ford Freestyle models. Featuring a female connector with a round shape, this sensor ensures a secure and stable connection to the vehicle’s wiring harness. The 43.5-inch harness length provides flexibility during installation, accommodating various wheel configurations. The bolt mount design with a single bolt hole allows for straightforward and secure attachment directly to the wheel. Equipped with two male pin terminals, the sensor maintains consistent electrical contact for accurate tire pressure data transmission.

Common Applications and Problem Resolution

  • Replaces faulty or damaged TPMS sensors on Ford Five Hundred, Mercury Montego, and Ford Freestyle
  • Resolves inaccurate or intermittent tire pressure readings
  • Eliminates TPMS warning light issues related to sensor failure
  • Supports maintaining proper tire inflation for improved safety and tire longevity
  • Ensures compliance with vehicle safety monitoring systems

Installation Notes and Tips

  • Verify vehicle compatibility with Ford Five Hundred, Mercury Montego, or Ford Freestyle before installation
  • Use existing mounting hardware as this sensor does not include mounting bolts
  • Handle the sensor carefully to avoid damage to the connector and terminals
  • Ensure the sensor is securely bolt-mounted to the wheel to prevent signal loss
  • After installation, perform a TPMS system reset or relearn procedure as specified by the vehicle manufacturer

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The ALS501 TPMS sensor undergoes rigorous testing to maintain accuracy and longevity. Please refer to Standard Ignition’s warranty policy for specific coverage details.

BrandStandard Ignition
Part NumberALS501
Connector GenderFemale
Connector ShapeRound
Harness Length - inches43.5
Harness Length - mm1104.9
Mounting Hardware IncludedNo
Mounting LocationWheel
Mounting TypeBolt Mount
Number of Bolt Holes1
Terminal GenderMale
Terminal TypePin

This part fits 10 vehicles. Search below:

YearMakeModelDrive TypePositionNotes
2007FordFive HundredFWDRear Left
2007FordFreestyleFWDRear LeftInstall sensor and follow OEM factory relearn procedure, no programming required.
2007FordFreestyleFWDRear Left
2007MercuryMontegoFWDRear Left
2006FordFive HundredFWDRear Left
2006FordFreestyleFWDRear Left
2006MercuryMontegoFWDRear Left
2005FordFive HundredFWDRear Left
2005FordFreestyleFWDRear Left
2005MercuryMontegoFWDRear Left

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

2ABS21395311755F9Z2C190CA5S7367695-0437127472-6218ABS611ABSD30667ARA2057BRAB205

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.