2008 Crown Victoria, Focus, Mustang 2007-2008 F-150 2008 E-Series, Expedition, Explorer Sport Trac, Explorer, F-Super Duty, Ranger
2007-2008 Mark LT
2008 Grand Marquis, Mountaineer
Some 2007-2008 vehicles equipped with a remote keyless entry (RKE) transmitter may exhibit an inoperative Key Fob due to a discharged Key Fob battery. This may be caused by an internal issue with the Key Fob software. This concern only applies to vehicles built within a specific date range with Key Fobs manufactured within a specific date range.
Follow the Service Procedure steps to correct the condition.
PERFORMING THIS PROCEDURE WILL HAVE NO EFFECT ON KEY FOB RANGE. REFER TO WORKSHOP MANUAL (WSM), SECTION 501-14 FOR KEY FOB RANGE DIAGNOSTICS.
Refer to vehicle list for build date range. (Figure 1)
Figure 1 - Article 08-12-9
If the vehicle was built within the date range, then continue with this procedure.
If not, then do not proceed. Continue with normal diagnostics per WSM, Section 501-14.
Is the vehicle Key Fob part number 8L3T-15K601-AA (3 button) or 8S4T-15K601-AA (4 button)? (Figure 2)
Figure 2 - Article 08-12-9
Yes - Go to Step 3.
No - Do not proceed. Continue with normal diagnostics per WSM, Section 501-14.
Using a thin coin, open the Key Fob and inspect manufacturer's date code sticker. The first three digits = day of year. The last digit = year. (Figure 3)
Figure 3 - Article 08-12-9
If the first 3 digits are equal to or between 005 and 306 (5th day through 306th day) and the last digit is 7 (year), then proceed to Step 4.
If the number is outside this specified range, then do not proceed. Continue with normal diagnostics per WSM, Section 501-14.
If the Key Fob is inoperative due to a discharged Key Fob battery, and the date code falls within the specified range, then replace Key Fob. Program the new Key Fob transmitter using the IDS RKE Transmitter Programming Procedure. Reassemble old Key Fob for warranty return analysis.
KEY FOBS REPLACED UNDER WARRANTY WILL BE REQUESTED FOR ANALYSIS AND VERIFICATION OF THE DATE CODE.
IDS RKE Transmitter Programming Procedure
Install known good battery into the suspect Key Fob so that IDS scan tool can identify it.
Connect IDS to vehicle.
From the Main Toolbox tab:
Select - Body.
Select - Security.
Select - Remote Keyless Entry.
Press the "Unlock" button on the suspect Key Fob to view the Transmitter Identification Code (TIC) in IDS.
Select "Erase One Key Fob" or the "Erase" button.
Select the suspect Key Fob TIC to erase from vehicle memory.
Remove battery from suspect Key Fob and reassemble for warranty return.
Select "Reprogram a New Keyfob" or the "Program" button.
Press the "Unlock" button on the NEW Key Fob.
Follow the instructions on the scan tool screen to complete the programming procedure.
3-Button Key Fob
4-Button Key Fob
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
2008 Focus, Mustang, Explorer, Explorer Sport Trac, Mountaineer, E-Series, Expedition, Crown Victoria, Grand Marquis, Ranger, F-Super Duty: Replace Key Fob(s), Includes Time To Perform Key Fob Programming Procedure, And Verify Date Code Sticker (Do Not Use With 15601A)
2007-2008 F-150, Mark LT: Replace Key Fob(s), Includes Time To Perform Key Fob Programming Procedure, And Verify Date Code Sticker (Do Not Use With 15601A)