Why does the 4L light flashing on and off?
The engine light, track off and 4L light come on every time I start the truck.
The 4L light flashes on and off.
If it continues to flash after a few seconds it is indiacating that there is a problem in the 4X4 system and it needs to be checked out. It is normal for the other light to come on during a start up as they are performing a systems check just as long as they go out after the check is complete. HTH
Search Toyota Tundra Questions
Toyota Tundra Experts