The manufacturer promises to repair or replace the product if necessary within warranty period
I want to convert the above sentence into passive. Is either of the following sentences the correct passive form?
- The product was promised by the manufacturer to repair or replace if necessary within warranty period
- The product was promised to be repaired or replaced if necessary within warranty period by the manufacturer
I feel like sentence 2 is the right one, but that is my feeling as I am not sure.
For sentence 1, I only changed "promise" to passive form while for sentence 2, I changed all of "promise," "repair" and "replace" into passive form.
So, can you tell me what is the right way to change the above sentence to passive form?