bq40z60 - Charge Overtemperature (COT)?

Hello,

I am seeing COT and CTOS safety alerts on my bq40z60 charger.  The reference manual states:

The charger has an independent temperature comparator with a trip point defined by TSHUTDOWN in the
datasheet. Once the overtemperature condition is detected, the charger will be disabled. The charger will
not be re-enabled until the temperature is below TSHUTDOWN– THys for COT:Recovery Delay.

What temperature is this comparator monitoring?  My cell temperatures remain below 26 C and my Int/Fet temperature remain below 70 C according to bqStudio.  

The datasheet states that TSHUTDOWN as 135 C.  Both temperatures are well below this limit.

Thanks,

Charley