Ford Module Replacement Instructions

Ford PCM Replacement Instructions

Professional guide for Ford vehicles with PATS (Passive Anti-Theft System)

Ford PATS System Coverage

These procedures apply to Ford, Lincoln, and Mercury vehicles equipped with the PATS (Passive Anti-Theft System). Follow the correct procedure based on your vehicle's PATS type.

1996 Starting Year
→
2010 Ending Year

⚠️ Year Range Notice

2011 and newer Ford, Lincoln, and Mercury vehicles use a different security architecture than classic PATS. Click here

Required for PATS B, C, F, G

Auto101 OBD2 Interface

Perform professional Ford PATS Link directly from your phone — no expensive scan tool needed.

  • Works with the Auto101 Pro App on iOS & Android
  • Bluetooth plug-and-play — no cables, no laptop
  • Supports Ford, Lincoln & Mercury 1996–2010
  • Also covers Chrysler PATS, DTCs & more
Buy Now →

Step 1 — Find Your PATS Type

Full PATS Reference Chart — Ford, Lincoln & Mercury (1996–2010) ▼ Show▲ Hide

Ford

Vehicle Year Type
Contour (V6) Before 2/2/98 A
Contour 1998–2000 E
Crown Victoria 1998–2002 B
Crown Victoria 2003–2010 E
Edge 2007–2010 C
Escape 2001–2007 E
Escape 2008–2010 C
Escape HEV 2006–2007 F
Escape HEV 2008–2010 C
E-Series 2008–2010 C G
Excursion 2000–2005 B
Expedition 1997–1998 A
Expedition 1999–2002 C
Expedition 2003–2006 E
Expedition 2007–2010 C
Explorer (4dr) 1998–2001 B
Explorer (4dr) 2002–2005 E
Explorer (4dr) 2006–2010 C
Explorer Sport (2dr) 1998–2001 B
Explorer Sport (2dr) 2001–2003 E
Explorer Sport Trac 2001–2005 E
Explorer Sport Trac 2007–2010 C
F-150 2004–2008 E
F-150 2009–2010 C
F-150 Harley-Davidson 2001–2003 C
F-150 Harley-Davidson 2006–2008 E
F-150 Heritage 1999–2006 C
F-250 (<8500# GVW) 1999–2000 C
Five Hundred 2005–2007 E
Flex 2009–2010 C
Focus 2000–2007 E
Focus 2008–2010 C
Freestar 2004–2007 E
Freestyle 2005–2007 E
F-Series >8500 GVW 2008–2010 C G
Fusion 2006–2010 C
Fusion HEV 2010 C
GT 2005–2006 B
Mustang 1996–1997 A
Mustang 1998 B
Mustang 1999–2004 C
Mustang 2005–2009 E
Mustang 2010 C
Ranger (3.0L & 4.0L) 1999–2000 B
Ranger (2.3L–4.0L) 2001–2004 E
Ranger (3.0L & 4.0L) 2006 E
Ranger (2.3L–4.0L) 2007–2010 G
Taurus (Duratec & SHO) 1996–1997 A
Taurus (Duratec & SHO) 1998–1999 B
Taurus 2000–2006 E
Taurus 2008–2010 C
Taurus X 2008–2009 C
Thunderbird 2002–2006 C
Windstar 1999–2000 C
Windstar 2001–2003 E

Lincoln

Vehicle Year Type
Aviator 2003–2005 E
Blackwood 2002–2003 C
Continental 1998–2002 C
LS 2000–2007 C
Mark LT 2006–2008 E
Mark VIII 1997–1998 D
MKS 2009–2010 C
MKX 2007–2010 C
MKZ 2007–2010 C
Navigator 1998 A
Navigator 1999–2002 C
Navigator 2003–2006 E
Navigator 2007–2010 C
Town Car 1998–2002 C
Town Car 2003–2010 E
Zephyr 2006 C

Mercury

Vehicle Year Type
Cougar 1999–2002 E
Grand Marquis 1998–2002 B
Grand Marquis 2003–2010 E
Marauder 2003 E
Mariner 2005–2007 E
Mariner 2008–2010 C
Mariner HEV 2008–2010 C
Milan 2006–2010 C
Milan HEV 2010 C
Montego 2005–2007 E
Monterey 2004–2007 E
Mountaineer (4dr) 1998–2001 B
Mountaineer (4dr) 2002–2005 E
Mountaineer (4dr) 2006–2010 C
Mystique (V6) Before 2/2/98 A
Mystique (V6) 1998–2000 E
Sable (Duratec) 1996–1997 A
Sable (Duratec) 1998–1999 B
Sable 2000–2005 E
Sable 2008–2009 C
Type Legend:  A Standalone (older)   B Standalone   C Cluster   D SCIL   E PCM (no scan tool needed)   F PCM Hybrid   G Cluster Module

Step 2 — Choose Your Procedure

🔑 Type E

No Scan Tool Needed

Key data is stored in the PCM itself

After replacing the PCM, use the simple 3-step key cycle (Passive Programming). No OBD2 scanner or app required.

View Procedure

🔧 Types B, C, F, G

Requires Auto101 App

PATS is controlled by Cluster or Standalone module

After replacing the PCM or Cluster, use the Auto101 App with the OBD2 Interface to run the Link PATS function (10-minute security procedure).

View Procedure

🔑 PATS Type E — Passive Programming

Simple 3-step key cycle after PCM replacement — no scan tool required

Why Type E is Different

Type E vehicles store all key data inside the PCM. When you install a new PCM, it has no programmed keys. The vehicle allows you to program two keys using a simple key cycle — no special equipment needed.

📋 Passive Programming — 3-Step Key Cycle

  1. First Key Cycle
    Insert the 1st programmed key → Turn ignition to RUN (do not start) → Hold for 6 seconds → Turn to OFF and remove key
  2. Second Key Cycle
    Insert the 2nd programmed key → Turn ignition to RUN → Hold for 6 seconds → Turn to OFF You must use 2 different (unique) keys. The theft light should extinguish.
  3. Start the Vehicle
    Turn the key to start — the engine should crank and run normally

⏱️ Timing Matters

Keep the key in RUN for the full 6 seconds on each cycle. Both keys must be unique — they cannot be duplicates of each other. The security (theft) indicator light should turn off after the second cycle.

All Keys Lost? If you also lost all original keys (not just replacing PCM), use the Auto101 App's Clear Keys function first to erase all stored keys, then follow this procedure with 2 new keys.

Get the Auto101 OBD2 Interface →

🔧 PATS Types B, C, F, G — Link PATS via App

Use the Auto101 App to synchronize the new PCM or Cluster with the vehicle's security system

Ford PATS Link — Step-by-Step Walkthrough

What "Link PATS" Does

After replacing a PCM or Cluster on Types B, C, F, G — the new module has no security data. Link PATS runs a 10-minute security access session that synchronizes the replacement module with the other PATS modules in the vehicle. The Auto101 App handles the entire process automatically.

⚠️ Before You Start

Security Access takes 10 minutes. Keep the ignition ON (engine off), do not interrupt the process, and make sure your phone stays connected and the screen stays active throughout.

What You Need

Hardware: Auto101 OBD2 Interface (plugged into vehicle's OBD2 port)
App: Auto101 Pro (free download — iOS & Android)
Vehicle: Ignition ON, Engine OFF

1
Plug in the Auto101 OBD2 Interface Connect the device to the OBD2 port (under the dashboard, driver's side). Turn ignition to RUN — do not start the engine.
2
Open the Auto101 Pro App Launch the app and navigate to Ford Diagnostic Tool. Scan for your OBD2 device and select it from the list.
3
Tap "Get Info" first Always run Get Info to verify a solid connection and confirm the vehicle is communicating correctly before proceeding.
4
Tap "Link PATS" The app will begin the 10-minute security access session. A countdown timer will be shown on screen. Do not disconnect or exit the app.
5
Wait for the success message The app displays a green success message in the console output when the link is complete. Cycle the ignition and start the vehicle.

📱 Module Detection Is Automatic

The app automatically detects which PATS module type your vehicle uses (PCM, Standalone, or Cluster) and communicates with the correct module. If multiple PATS modules respond, the app will ask you to select the correct one.

Get the Auto101 OBD2 Interface

Traditional scan tool — Parameter Reset & key cycle (reference)

Standard OEM-style wording for 1996–2010 only. Use with a J2534 device or shop scan tool if you are not using the Auto101 app.

🔧 PATS Types B, C, F, G

Replacing PCM with Parameter Reset Function

Required Equipment

Essential Tool: A scan tool with Parameter Reset function, or a J2534 scan tool is required to perform the reset. The tool and software used will give specific instructions to follow.

⚠️ Important

Security Access Time: The security access process takes 10 minutes. Do not interrupt this process.

📋 Step-by-Step Procedure

  1. Cycle key to RUN position
    Turn the ignition key to the RUN position (do not start the engine)
  2. Enter Security Access on the PATS control function module:
    • Type B: PATS module
    • Type C: Instrument Cluster
    • Type F: PCM
    • Type G: Instrument Cluster Module
    This process takes 10 minutes - do not interrupt
  3. Select "Parameter Reset"
    After security access is complete, select Parameter Reset and exit Security Access
  4. Perform PCM Keep Alive Memory (KAM) reset
    Select and execute the KAM reset function
  5. Start vehicle
    Turn the key to start the engine - the vehicle should start normally

🔄 PATS Type E (OEM key cycle)

Simple Key Cycle Procedure - No Scan Tool Required

Simple 3-Step Process

Great News! Type E PATS vehicles can be reset with a simple key cycle procedure. No scan tool is required for this PATS type.

📋 Quick Reset Procedure

  1. Cycle key 1:
    Turn key to OFF position, then turn to RUN and keep for 3 seconds, then back to OFF
  2. Cycle key 2:
    Turn key to RUN position and keep for 3 seconds, then turn to OFF
  3. Start vehicle
    Turn the key to start the engine - the vehicle should start normally

⏱️ Timing is Important

Follow the 3-second timing precisely for each key cycle. Keep the key in the RUN position for exactly 3 seconds before turning it OFF. Some vehicles use 6 seconds — if 3 seconds does not work, try the 6-second passive programming in the main Type E section above.

Reference — OEM notes

🔍 PATS Type Identification

Critical: Make sure to identify your vehicle's PATS type correctly before proceeding with the reset procedure. Each type requires different module access points and procedures.

⏱️ Timing Requirements

Precision Matters: Follow the timing requirements precisely, especially for the 10-minute security access period (Types B, C, F, G) and the key cycle timing (Type E — 3 seconds in this reference, or 6 seconds in the main Type E section if required by your vehicle).

🛠️ Scan Tool Requirements

Types B, C, F, G: A scan tool with Parameter Reset function or J2534 compatibility is required. Type E does not require a scan tool in the traditional OEM 3-step procedure above.

Everything in one device

Auto101 OBD2 Interface

The only tool you need for Ford PATS Link, Clear Keys, DTCs, and more — all from your phone.

  • Link PATS (Types B, C, F, G) — 10-min procedure via app
  • Clear Keys — erase all keys and start fresh
  • Read & Clear DTCs — all Ford-specific codes
  • Get Info — VIN, calibration IDs, part numbers
  • Also covers Chrysler, GM relearn & more
Buy Now →

Important Notes

🔍 Identify Your PATS Type First

Critical: Always confirm your vehicle's PATS type before starting. Type E uses a simple key cycle while Types B, C, F, G require the Link PATS procedure via the app. Using the wrong procedure will not damage anything, but it won't work.

⏱️ Do Not Interrupt the 10-Minute Process

Types B, C, F, G only: The security access window is exactly 10 minutes. Keep the ignition ON, the app open, and the OBD2 device connected throughout. The app shows a live countdown timer so you can monitor progress.

🔑 All Keys Lost? Use Clear Keys First

If you lost all programmed keys or the keys are incompatible with a replacement module — run Clear Keys in the app first, then reprogram 2 new unique keys using the key cycle procedure. You need 2 different keys to complete the programming.

🚗 Vehicle Coverage

Supported: Ford, Lincoln, and Mercury vehicles with PATS — model years 1996 through 2010. Vehicles from 2011 onward use a newer system and are not covered by these procedures.