A/T - Delayed Engagement/Hesitation/Bump on Decel
TSB 07-23-211/26/07
6R60 TRANSMISSION EQUIPPED VEHICLES ONLY -
BUMP WHILE BRAKING - BELOW 10 MPH (16 KM/H),
DELAYED ENGAGEMENT, HESITATION ON TIP-IN
AFTER BRAKING
FORD:
2006-2008 Explorer
2007-2008 Explorer Sport Trac
MERCURY:
2006-2008 Mountaineer
This article supersedes TSB 07-13-8 to update the Service Procedure.
ISSUE
Some 2006-2008 Explorer 4dr, Mountaineer and 2007-2008 Explorer Sport Trac vehicles equipped with 6R60 transmission may exhibit a bump feeling while braking to a stop less than 10 MPH (16 Km/h). Some vehicles built prior to 05/4/2006 may exhibit the following symptoms:
^ Delayed engagements into Drive from Park Neutral or Reverse.
^ Hesitation upon tip-in after braking to a stop.
This fixes the bump while braking to a stop, improves the delayed engagements and reduces the incidence of tip-in hesitation while accelerating from a stop.
ACTION
Follow the Service Procedure steps to reprogram the transmission control module (1CM) and the powertrain control module (PCM). Some tip-in hesitation is normal on this transmission in order to provide smooth operation. This calibration update will help to improve the condition. The harsh bump while braking to a stop will be eliminated. Several days of driving may be required for the transmission to fully adapt.
SERVICE PROCEDURE
NOTE
DO NOT ATTEMPT TO REPLACE THE MECHATRONIC UNIT. MECHATRONIC REPAIR/REPLACEMENT IS NOT AUTHORIZED FOR THIS ISSUE.
1. Install IDS/PDS or equivalent and ID the vehicle.
2. Update the PCM and TCM calibration using IDS release 51.8 and higher or 52.1 and higher. Calibration files may also be obtained at the website. Since the TCM cannot be independently reprogrammed, reprogram the PCM to ensure that engine and transmission calibrations are updated to the latest level simultaneously.
3. Clear 1CM keep alive memory (KAM) and adaptive tables.
a. Using IDS:
(1) Open Toolbox.
(2) Choose Powertrain.
(3) Choose Reset KAM.
(4) Then Choose 1CM.
b. Using PDS:
(1) Choose all Tests and Calibrations.
(2) Scroll down the menu and Choose Reset TCM KAM.
NOTE
FOR PDS, RESET 1CM KAM IS NOT THE SAME AS CLEAR TRANSMISSION ADAPTIVE TABLES, WHICH IS UNDER THE POWERTRAIN - TRANSMISSION MENU TREE.
NOTE
UNHOOKING THE BATTERY WILL NOT CLEAR THE TCM KAM.
NOTE
DO NOT CLEAR THE PCM KAM.
4. Verify that the transmission fluid temperature (TFT) PID is above 175° F (80°C). If it is not at 175° F (80° C), drive unit approximately 3 miles (5 Km) to reach temperature.
NOTE
TFT MUST BE AT 175° F (80° C) OR ABOVE BEFORE PROCEEDING TO STEP 5.
5. Drive unit to perform adaptive shift strategy learn.
a. Accelerate from rest with light throttle. The 1-2, 2-3, and 3-4 shifts must occur at engine speeds between 1300-1800 RPM.
b. Continue to accelerate gently to 50 MPH (80 Km/h) so that the transmission shifts into 6th gear.
c. Brake gently to a complete stop and hold foot on brake for at least 15 seconds.
d. Repeat Steps (a-c) a total of five (5) times.
WARRANTY STATUS: 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.
OPERATION DESCRIPTION TIME
072302A 2006-2008 Explorer, 0.9 Hr.
Mountaineer 2007-2008
Explorer Sport Trac 4.6L
6R60 Transmission: Check
DTCs, Reprogram The
PCM And TCM, Includes
Time To Clear KAM And
Perform Road Tests (Do
Not Use With 12650D)
DEALER CODING
CONDITION
BASIC PART NO. CODE
RECAL 04
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