Flashing LEDs: Notes
Component Location
| Item | Description |
|---|---|
| 1 | Front park or turn or warn LED assembly |
| 2 | Warn module |
| 3 | High mount flashing LEDs |
| 4 | Tail lamp flashing LEDs |
| 5 | Liftgate flashing LEDs |
| 6 | Lighting relay center or lighting and siren control module |
| 7 | Grille flashing LEDs |
Overview
The flashing LEDs are used to visually alert individuals to the vehicle's presence. The number and placement of flashing LEDs varies based on the police package ordered.
System Operation
System Diagram
Flashing LEDs
The flashing LEDs are turned on and off by zones. There are 4 zones for the flashing LEDs :
- Front park or turn or warn LED assemblies
- Grille flashing LEDs (if equipped)
- Tail lamp and front corner flashing LEDs (if equipped)
- High mount and liftgate flashing LEDs (if equipped)
LED Flash Patterns
The LED flash patterns are preset from the factory and can be changed in 2 groups. Refer to LED Flash Pattern Programming .
The 2 groups are:
- Front park or turn or warn, grille, front corner and tail lamp flashing LEDs
- High mount and liftgate flashing LEDs
When a flashing LED is replaced, the flash pattern of the replacement LED may be different than the rest in the group. Refer to LED Flash Pattern Programming .
Flashing LED Synchronization
The flashing LEDs are synchronized in up to 4 groups:
- Front park or turn or warn LEDs
- Grille flashing LEDs (if equipped)
- Tail lamp and front corner flashing LEDs (if equipped)
- High mount and liftgate flashing LEDs (if equipped)
Each flashing LED assembly contains a module that controls the flash pattern and synchronizes the flashing LED with the other flashing LEDs in the group.
Flashing LED Controls
The flashing LEDs are driven and controlled by the following:
- Lighting relay center or lighting and siren control module - controls the grille, front corner, tail lamp, high mount and liftgate flashing LEDs.
- Warn module - controls the front park or turn or warn LED assemblies.