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W163 / W126
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9 Posts
Discussion Starter #1
I had the same problem as many of you, the low range light flashing several times at start up and could not engage the low range as when pressing the low range button the light flashed several times and nothing happens.

I visited a Mercedes specialist and did the following easy (DIY) repair:

1-Lift the car ( although you can easily access the transfer case motor (lowrange) without lifting the car
2-Located the motor and drill a small hall on the plastic cover
3-Spray inside with a good Anti-Corrosion Spray
4-Cover the small hall with a silicone and let it dry
5-After removing the car try again to engage the low range several times pressing the switch wile the gearbox in "N" position
6-If it does not work you can hit the metal (can shape) motor with an hammer wile somebody is pushing the low range switch several times

This worked fine in my car and is still running well, I recommend exercising the LR selector motor every now and then

Hope this helps somebody with the attached pictures
 

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2002 ML55 AMG, 2005 Chrysler Crossfire Coupe Limited, 1999 C280
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4,714 Posts
Nice one and thanks for the cheap DIY!

I always 'exercise' my low range feature by engaging it every 2-3 weeks or so.

Is the rather alarming 'clunk' as you engage low range a normal feature of its operation?

I hope so as the 'clunk' is rather disconcerting and worrying.
 

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W163 / W126
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9 Posts
Discussion Starter #3
Hello

It is good that you exercise your motor

And it is also good that you can ear the clank, means that it is alive and ready to work
 

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'07 C280 4matic, '06 530i, '98 ML320
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1,562 Posts
FAR, that 'clunk' is there by design :) That 'clunk' indicates you are set to go :)
My '98 ML320 has always had that clunk.
 

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ML500
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13 Posts
I know that low range is used mainly for towing, but does anyone use it for anything else? I have used it in the snow and it actually seems to help a little. Just looking for ideas.
 

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2002 ML55 AMG, 2005 Chrysler Crossfire Coupe Limited, 1999 C280
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4,714 Posts
Hello

It is good that you exercise your motor

And it is also good that you can ear the clank, means that it is alive and ready to work
FAR, that 'clunk' is there by design :) That 'clunk' indicates you are set to go :)
My '98 ML320 has always had that clunk.
Phew!

Thanks guys!:thumbsup:
 

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2003 ML350, Trabant P60, VWJetta, BMWG650GS
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269 Posts
'don't know about your car but there's no audible "clank" in mine and I usually do this exercise every 1-2 months.
 

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1990 190E 2.6,.... 1998 ML320, 2005 ML500SE
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3,104 Posts
I hear an unmistakable Clunk but no Clank going in and out of Low Range on both my ML's.
Mike
 

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'01-E320 & 02-ST2
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31,631 Posts
That's a great little trick, but I thought that thing was sealed-for-life too, and here you are drilling holes in it. ;) :p

Seriously, good job and good luck.:thumbsup:

Take care and enjoy the ride,
Greg
 

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'07 C280 4matic, '06 530i, '98 ML320
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1,562 Posts
That's a great little trick, but I thought that thing was sealed-for-life too, and here you are drilling holes in it. ;) :p
Greg
Gregs, if the Low Range Motor is frozen/stuck and not working, drilling a hole and resealing afterwards won't do any harm. You either have to do this or buy a new Low Range motor. I see the above 'procedure' :) as an effort to 'revive'/free the stuck motor.
 

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'01-E320 & 02-ST2
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31,631 Posts
Greg ... You either have to do this or buy a new Low Range motor. I see the above 'procedure' :) as an effort to 'revive'/free the stuck motor.
Hey, pcy. That part of the post was really tongue-in-cheek. I appreciate all such fixes and tips, that is one of the great things about the forum.
 

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2002 ML55 AMG, 2005 Chrysler Crossfire Coupe Limited, 1999 C280
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4,714 Posts
That's a great little trick, but I thought that thing was sealed-for-life too, and here you are drilling holes in it. ;) :p
.......
Oh Boy!:eek:

Greg, I sure hope Mac doesn't read this!:D
 

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1999 ML 320
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144 Posts
Just to be sure: when you press the Lowrange button, light MUST STAY ON??

If that's the case then mine is also not working (after pressing the button light flashes a couple of times and the goes of again)
 

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C180 Saloon 1995, ML270 CDI 2003
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8 Posts
Had the same problem, when I pressed the low range button (while on N), the light flashed and nothing happened. I also had the Transfer Case light flashing evertime I started the car.
All what I had to do was to change the Transfer Case oil (there is a detailed thread on how to do that, search for transfer case, its a 5 min job), drive around 100 miles, and now the low range is working again. I dont personally recommned drilling, and if it is jammed, its probably time to change the oil anyway!

I know its supposed to be sealed for life, but again, if you search a bit, you will notice that there has been some issues and recalls for Transfer Cases on many MLs.
 

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2002 Mercedes ML320
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99 Posts
Im inexperience with doing this procedure or doing a transfer case change. Would it be wise to pay a mechanic to do this? Will they even have a clue on how to do a transfer case oil change?
 

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Mercedes ML-320 1998 + Mercedes C230 1997
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33 Posts
Im inexperience with doing this procedure or doing a transfer case change. Would it be wise to pay a mechanic to do this? Will they even have a clue on how to do a transfer case oil change?
My problem is: i pressed LR button and now light an LR are permantly engaged. I want to know what would hapen if i remove LR motor? will i get an oil flow?
what is exactly the part that fails, the motor actuator or the part that gets in the transfer?
 

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Premium Member
02 ML320 06 ML500
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17,156 Posts
My problem is: i pressed LR button and now light an LR are permantly engaged. I want to know what would hapen if i remove LR motor? will i get an oil flow?
what is exactly the part that fails, the motor actuator or the part that gets in the transfer?
Please update your profile in USER CP to include the year and model of your truck.
 

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