The official notice
Defect
On certain vehicles, the recall repairs completed by a Ford dealer during recall 23C41 (Transport Canada recall no. 2023-671) may not have been done correctly. As a result, a second repair is required. On certain trucks, the turn signal telltale may flash at the same speed when a turn signal bulb fails. As a result, you may not notice when a turn signal bulb is not working. Canadian regulations require a change in the turn signal flash rate when a bulb fails.
Safety Risk
A turn signal telltale that doesn't work properly could cause you to be unaware when a turn signal bulb fails. Additionally, turn signals that do not work may cause a person not to recognize when a driver intends to turn or change lanes. This could increase the risk of a crash.
Remedy
Ford will notify owners by mail and advise you to take your vehicle to a dealership to update the body control module (BCM).