Canon EOS Rebel T5i Instruction Manual page 330

Troubleshooting Guide
High-speed sync cannot be set in the <f> mode.
Under [z1: Flash control], set [Flash sync. speed in Av mode] to
[Auto] (p.219).
The camera makes a noise when it is shaken.
The built-in flash's pop-up mechanism moves slightly. This is normal.
The shutter makes two shooting sounds during Live View
shooting.
If you use flash, the shutter will make two sounds each time you shoot
(p.147).
During Live View and movie shooting, a white <s> or
red <E> icon is displayed.
It indicates that the camera's internal temperature is high. If the white
<s> icon is displayed, the still photo's image quality may deteriorate.
If the red <E> icon is displayed, it indicates that the Live View or
movie shooting will soon stop automatically (p.171, 200).
Movie shooting stops by itself.
If the card's writing speed is slow, movie shooting may stop
automatically. Use an SD Speed Class 6 "
find out the card's read/write speed, refer to the card manufacturer's
Web site, etc.
If the movie shooting time reaches 29 min. 59 sec., the movie shooting
will stop automatically.
330
" or faster card. To