2021 - Limited Slip axle or no?

Rob6805

Full Access Members
Joined
Mar 25, 2021
Posts
405
Reaction score
209
Location
49735
On my 21's window sticker it clearly states:

"HEAVY-DUTY TRAILER TOW PKG NO CHARGE .3.73 NON-LMTED SLIP REAR AXLE"

However, on my cert sticker I have a 3L for the axle code which indicates it does have limited slip. What's up?
 

Attachments

  • 20210527_155402.jpg
    20210527_155402.jpg
    109.2 KB · Views: 29
  • Screenshot_20220525-180714_Acrobat for Samsung.jpg
    Screenshot_20220525-180714_Acrobat for Samsung.jpg
    160.9 KB · Views: 29

LazSlate

Well-Known Member
Joined
May 7, 2022
Posts
86
Reaction score
23
Location
Arizona
OP
OP
Rob6805

Rob6805

Full Access Members
Joined
Mar 25, 2021
Posts
405
Reaction score
209
Location
49735
That does seem weird. Does your window sticker list in the functional section "Controltrac with ELSD"? I know the timberline has electronic locking 2022 maybe your 2021 has it also. Either way a lot of threads on how the Non Limited Slip works way better than Limited Slip. The Advancetrac really keeps things going straight. https://www.expeditionforum.com/thr...ifferential-whats-the-impact-on-towing.49647/
Hey. No, the window sticker does not indicate the controltrac w/elsd and I do not have the locker button either. And yes, I have read that the non elsd is better because elsd is not a true limited slip diff and it can overheat and cause issues.

I am just wondering if maybe it's a true LSD because of the 3L code.
 

Tribe21

New Member
Joined
Jan 18, 2022
Posts
4
Reaction score
2
Location
VA
My 2021 is also the same way with sticker, axle code and no locker button
 

duneslider

Full Access Members
Joined
Mar 20, 2019
Posts
575
Reaction score
251
Location
Utah
From what I have seen, Ford reuses the axle codes. I have seen 3L associated with other vehicles as being 4.10 gears and Limited slip, or other things. It appears they reuse the numbers in different years to mean different things. Where they made the change to not have the LS standard with the 3.73 gears I suspect there is a different code for the 3.73 and Limited slip.
 

wakeboarder

Full Access Members
Joined
Nov 16, 2019
Posts
640
Reaction score
360
Location
Fort Lauderdale, FL
From what I have seen, Ford reuses the axle codes. I have seen 3L associated with other vehicles as being 4.10 gears and Limited slip, or other things. It appears they reuse the numbers in different years to mean different things. Where they made the change to not have the LS standard with the 3.73 gears I suspect there is a different code for the 3.73 and Limited slip.
According to the 2021 Expedition towing guide there is a 2L axle code for non-limited slip 3.73. It still lists the 3L as a 3.73 ELSD.


8AFF0213-877D-42A5-A6FC-2D9A52F387EB.jpeg
 
OP
OP
Rob6805

Rob6805

Full Access Members
Joined
Mar 25, 2021
Posts
405
Reaction score
209
Location
49735

wakeboarder

Full Access Members
Joined
Nov 16, 2019
Posts
640
Reaction score
360
Location
Fort Lauderdale, FL
Wow!! This could be yet another big screw up by Ford. The Safety Compliance Certifications Label is a Federal requirement. If it is wrong I would think there could be a fine.

What if the label is correct and you do have an ELSD? Have you had the chance to look at your rear differential?
 
Top