TSB 20-2291

202291
TECHNICAL SERVICE BULLETIN
Reverse Braking Assist Perceived As Too Sensitive Detecting
Objects - Built On Or Before 23-July-2020
28 August
2020
This bulletin supersedes 20-2135 . Reason for update: Incorrect Procedure
Model:
Ford
2020 Explorer
Lincoln
2020 Aviator
2020 Corsair
Summary
This article supersedes TSB 20-2135 to correct the Service Procedure.
Issue: Some 2020 Explorer/Aviator/Corsair vehicles built on or before 23-Jul-2020 may inadvertently
activate the reverse braking assist system while backing up. This may be perceived as the system is too
sensitive to surrounding objects. This may be due to the software in the image processing module B
(IPMB). To correct the condition, follow the Service Procedure to reprogram the IPMB, as well as the
accessory protocol interface module (APIM) to allow the vehicle to remember the last setting of reverse
brake assist when the vehicle is restarted.
Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following
criteria:
• 2020 Explorer/Aviator/Corsair
• Built on or before 23-Jul-2020
• Inadvertently activates the reverse braking assist system while backing up
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
Operation
No.
Description
2020 Explorer/Aviator And Corsair: Reprogram The IPMB With Diagnostic Scan
Tool And APIM With The SYNC 3 Universal Thumb Drive (Do Not Use With Any
Other Labor Operations)
Repair/Claim Coding
Causal Part:
19H405
Condition Code: 04
Service Procedure
202291A
Time
0.9
Hrs.
1. Reprogram the IPMB using the latest software level of the appropriate Ford diagnostic scan tool.
2. Turn the reverse brake assist to OFF.
3. Reprogram the accessory protocol interface module (APIM) using the SYNC 3 universal thumb drive.
(1). Disconnect all customer connected USB items from all media hub locations.
(2). Start the vehicle.
(3). Insert the SYNC 3 universal thumb drive into the USB port on the media hub.
(4). The module automatically updates with no user input required.
• Modules already at the latest software level will indicate this after approximately 30 seconds.
• Module programming for a non-updated module does not need to be monitored and can take approximately
20-30 minutes.
• Once the reprogramming has completed, the screen will display a message indicating that the module is up to
date.
(5). Remove the SYNC 3 universal thumb drive. The screen returns to the SYNC 3 home screen.
Reconnect any customer USB items. No vehicle or system restarts are required.
© 2020 Ford Motor Company
All rights reserved.
NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge,
tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or
provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do
not assume that a condition described affects your car or truck. Contact a Ford or Lincoln dealership to determine whether the
Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended
Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was
current at the time of printing. Ford Motor Company reserves the right to supersede this information with updates. The most recent
information is available through Ford Motor Company's on-line technical resources.