Sony Japan issued this new press statement (google translated):
In some products of our FE 16-35mm F2.8 GM “SEL1635GM” lens for our digital single-lens camera α ™ [E mount] released on July 28, 2017, the camera is operated when this lens is installed. It has been confirmed that events such as not accepting may occur.
Therefore, we will inspect and repair the target product free of charge. Please confirm the following contents and contact us. You can also apply from this website.
We apologize for any inconvenience or inconvenience caused to customers who use the product. Thank you for your continued patronage of our products.
Record
■ Target products
Lens for digital single-lens camera α ™ [E mount]
FE 16-35mm F2.8 GM “ SEL1635GM ”
■ Target serial number
Part of 1800502 to 1823192
■ Event
Camera does not accept operation when this lens is attached
Camera screen does not display properly when this lens is attached
■ Contents
We will inspect and repair the target lens free of charge.
■ How to check the serial number
The serial number is written on the model nameplate attached to the side of the lens.
How to check the serial number
■ Confirmation of target product by serial number
Enter the 7-digit serial number in the “Application from the web (collection repair)” below and press the “Confirm / Application screen” button to check if the product you are using is eligible.
* If applicable, the “Returning Repair” request page opens. You can fill in the necessary information and apply for “take-over repair” (can be canceled and applied at a later date).
* If not applicable, the message “Product with the entered serial number is not covered by this case” will be displayed.