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TECHNICAL SERVICE BULLETIN 23-2256 - No Restart During Auto Start-Stop Operation - Issued August 11, 2023 | ||||||||||||
Model:
Issue: Some 2020-2021 Expedition vehicles my exhibit a no restart during auto start-stop operation. This may be due to a software parameter in the PCM. To correct the condition, follow the Service Procedure to reprogram the PCM. Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria:
Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty (SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are not altered by a TSB. NVLW/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool. Labor Times
Service Procedure 1. Reprogram the PCM using the latest software level in the Ford Diagnosis And Repair System (FDRS) scan tool. NOTE: Advise the customer this vehicle is equipped with an adaptive transmission shift strategy which allows the vehicle's computer to learn the transmission's unique parameters and improve shift quality. When the adaptive strategy is reset, the computer will begin a relearning process. This relearning process may result in firmer than normal upshifts and downshifts for several days. |