4x4 light comes on in 2wd can YOU help?

[Mark0000]

My 4x4 light flashes green in my 2008 ML Triton GLXR, when I turn the ignition on but not the engine, and after I start the engine the light keeps flashing. I
Haven’t put in 4h or 4l since the issue started happening, so the it’s only been in 2h. Are there any common issues related to this that can be fixed quite easily, does it require a specialist, or is the transfer case just done for

 

[Les PK Ranger]

..
Without knowing the model and it's mechanical, similar issues have happened to other makes / models in the past here on the forum.

Problem most likely isn't the whole transfer case.
Usually it turns out to be a failed or failing actuator, can be dirty actuator connector / wire damage or corrosion, low battery voltage, faulty sensor or dashboard switch, sometimes a blown fuse.
Trial and error.

Suppose you've googled specific problem and vehicle model to see what comes up ?
Usually something will, often other forums specific to manufacturer.

Try that anyway, see what you can find, hopefully someone here might have seen the problem before in the older Triton.

I've had similar in my Ranger, that turned out to be a blown brake light / horn fuse, yes a 10 amp fuse that the transmission control module was wired into without any notation on fuse index.
That's an epic story in itself, meant a 1000km drive back from hell in limp mode, mudfest under the car, yeah, 10c fuse.

Hope you get it sorted painlessly.

 

[Lost1?]

The selector operates on a solenoid that engages the t/case for awd, another solenoid for 4H and a third solenoid to engage 4L. It could be the solenoid has failed. Hence prevemting the front diff from disengaging or the selector is sticking. Preventing the front diff from fully disengaging.

Once you identify which and fix it I recommend you find a patch of dirt somewhere and run your selector through all ranges as a form of preventative maintenance once a month.

 

[Chatty]

..
I've had similar in my Ranger, that turned out to be a blown brake light / horn fuse, yes a 10 amp fuse that the transmission control module was wired into without any notation on fuse index.
That's an epic story in itself, meant a 1000km drive back from hell in limp mode, mudfest under the car, yeah, 10c fuse.

And why is it that I can buy a fuse block from Jaycar that has a nice little LED next to each fuse to tell me if that fuse is blown, but car manufacturers are unable to incorporate that into vehicle fuse blocks?

 

[Les PK Ranger]

And why is it that I can buy a fuse block from Jaycar that has a nice little LED next to each fuse to tell me if that fuse is blown, but car manufacturers are unable to incorporate that into vehicle fuse blocks?

True.
But I know why, that would be the extra buck it'd cost 'em to fit it on each car.

Driving back I had no reason to use the horn, no one behind to say 'hey your brake lights are out'.
Totally bamboozled until I read a post on this forum someone had the same issue and fixed with the new fuse.
Even the RAA had no eye deer, lol.

 

[boobook]

had no eye deer, lol.

An oldie but a goodie.