Why is my 2 wheel drive light flashing?
A flashing indicator light is typically caused by wiring or an electrical component like the controller, a faulty motor or fork, a speed sensor, or a position switch. Many 4WD units have an actuator located on the front axle to lock and engage the front axle for 4WD.
What does it mean when the 4×4 light comes on?
The four wheel drive light means your car has activated four wheel drive. If the Service 4WD light is on, there may be an issue with the system.
How do I test a transfer case control module?
Switch on the ignition and observe the transfer case shift control indicators, you should notice a flash. You also need to diagnose some system circuits if you do not notice any flash. Check for battery and ignition voltage. Check the transfer case shift control switch connector and the ground circuit for earth.
Why does the 4 wheel drive light stop flashing?
The transfer case neutral position needs to be selected before you attempt to engage 4WD. The selected position indicator light will flash until the transfer case completes the shift. When the shift is complete, the indicator light for the selected position will stop flashing and remain ON.
What does the blinking 4 wheel drive indicator mean?
So what is that 4 wheel drive indicator blinking on your dashboard means? The purpose of the 4 wheel drive light is to indicate when you have engaged 4WD mode by selecting 4H. When the light flashes continuously for more than 30 seconds it signifies there is a problem somewhere on your drivetrain system and that 4WD has not engaged properly.
What should I do if my 4×4 indicator light blinks?
Sounds like you might want to check the signals being sent from the ECU. Read through Geoff’s thread as RTFM posted the electrical info: Sounds like you might want to check the signals being sent from the ECU. Read through Geoff’s thread as RTFM posted the electrical info: Click to expand…
How does a 4 wheel drive light work?
It accomplishes this by means of a small electric motor bolted onto the transfer case that shifts a pin in place to lock the center transfer differential. The actuator allows you to shift from 2WD to 4WD on the fly and back to 2WD without stopping and can be engaged and disengaged by means of a switch inside the cabin, usually on the dashboard.