Chrysler 2007 Aspen - Manual (Page 136)

of the front and rear turn signal lights. If an indicator fails
to light when the lever is moved, it would suggest that
the switch or indicator lamp is defective.
If a defective bulb or wiring circuit is detected for the
turn signal system, the arrow indicators will flash at a
faster rate.
You can signal a lane change by moving the lever
partially up or down.
NOTE: If a turn signal has been left on for at least a mile
duration, a continuous chime will sound.
Turn Signal Auto-Mode
Tap the multi-function control lever once and the turn
signal (left or right) will flash 3 times, and automatically
turn off.
Turn Signal Lever
136 UNDERSTANDING THE FEATURES OF YOUR VEHICLE