LM5164-Q1: Buck SW pin field failure in running vehicle

Tool/software:

Dear TI team,

There was 10000 Board are running in field with LM5164Buck in BMS application, Battery maximum voltage is like 67.2V which is buck I/P, There are two buck failure return on filed in running vehicle. 

1st One: LM5164 SW pin resistance was 2.6k with respect to I/P & there was no output output.

2nd One: LM5164 I/P pin getting short with ground same case in field, There was also transient protection circuit in the design the TVS was safe . 

PFA attached link.

https://drive.google.com/file/d/1ZJXujkoA2oG-H_Ex4wxyGZwn8z8yuXJu/view?usp=sharing

https://drive.google.com/file/d/1bH1ZjHzJqHHykfmikNe6mNpIQhRzgWxT/view?usp=sharing

https://drive.google.com/file/d/1omZICy5tA0x12OxKs0E2Js1NsT0vEL-a/view?usp=sharing

So Kindly look at this matter, 

.