When the Service 4WD light comes on, it also shuts down the 4WD capability for the remainder of the drive cycle. ... This is a software issue and can only be corrected by flashing the computer's memory.Sep 6, 2015
What does SERV 4WD mean?
The 4WD switch light will indicate 2WD or Auto when drive engaged. ... The "Service 4WD System" message does not mean routine maintenance of the 4WD system is required. The "Service 4WD System" message indicates a problem with the 4WD system that should be properly diagnosed and repaired.
How do you clear a 4WD Service Code?
- Step 1 : Inspect your service forward light. ...
- Step 2 : Remove the dash bezel and knee bolster. ...
- Step 3 : Pull-on switch assembly. ...
- Step 4 : Unplugging transfer case control module. ...
- Step 5 : Undo the negative cable on battery.
Why does my service 4WD light come on and off?
When the 4WD light appears, it is letting you know that there is an issue with the 4WD system and it must be handled promptly. Another reason why this light may occur is an incomplete shift in gears. This is confusing and damaging to the engine and could result in your 4WD service light flashing continuously.Jan 6, 2019
How do I service my 4 wheel drive?
- Draining and refilling the Transfer Case with fresh, clean fluid.
- Draining and refilling the Front Differential with fresh, clean fluid.
- Draining and refilling the Rear Differential with fresh, clean fluid.