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4WD Lock Turns Off by Itself

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mhemphill73

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Discussion starter · #1 ·
In my wife's 2011 when you use the lock button for 4wd the light turns on in the instrument panel but then it seems after driving a while it shuts off automatically. Is this supposed to do this?

Thanks in advance for any help.

Matt
 
#3 ·
vanib is correct, 25 mph, and the 4WD ECU is constantly testing at any speed to see if the rear drive is needed and if so how much. "LOCK" doesn't really work like it does on a 4X4 like my F-250s.
 
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#6 ·
rns said:
This will need that traction control is turned off which is necessary in surface that may stuck the tyre pattern and reduce the grip.
Click to expand...
??? What am I missing in the translation?
 
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#7 ·
Dr. Dyno said:
??? What am I missing in the translation?
Click to expand...
Sorry if I am hard to understand as non-native writer :)

Wheels should not spin very freely if traction control is engaged.
Sometimes in certain terrain (snow,mud) wheel spinning may be required to maintain movement. Spinning tyre clears its surface from snow or mud. This capability is tested at least on snow in Nordic winter tyre tests.
 
#8 ·
rns said:
Sorry if I am hard to understand as non-native writer :)

Wheels should not spin very freely if traction control is engaged.
Sometimes in certain terrain (snow,mud) wheel spinning may be required to maintain movement. Spinning tyre clears its surface from snow or mud. This capability is tested at least on snow in Nordic winter tyre tests.
Click to expand...
Thanks, got it now.
I'm quite sure Matt, the original poster won't encounter Nordic conditions.
 
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#11 ·
It's been 11 years since we discussed this and I've forgotten what "it" is.
 
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#13 ·
Sorry, I was too lazy to read the title. I'll blame it on the oil threads.
 
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Dr. Dyno
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