I believe it to be a T-55 torx.
T60
44
T50 or T55
T55
You need a torx bit 40 or 45 I think. Ok, follow the seatbelt up to where it
The T60 is the size needed to remove caliper bracket.
Torx T 40 socket
T40
T55
T-55
You are probably needing a #12 external-torx.