How does the new differential lock work on the 2011's ? Give me Warn locking hubs and aftermarket limited slips anyday.

 

You pull out on the drive mode selector **** and it locks the rear differential. You will get an indicator in the cluster.

Found that out after my 2 y/o son pulled the **** without me knowing it. Made for an interesting few minutes after driving off.

 

2011 FORD SUPER DUTY ELECTRONIC REAR DIFFERENTIAL LOCK .: Articles


The bad thing is that it only works at speeds under 30 mph, and when not engaged the rear end is an open differential.

I would take a Detroit Locker, or Detroit Trutrac over it any day!

 

Yea, I wish that we could override that I know times that in the mud tires are going a lot faster than 30... Usefull in low speed rocky type environments though... I used it 24/7 back in August in the rocky / 4WD Low & was impressed...

 

There is an override sold by SPEDiesel.com, however I have contacted them regarding it not working at all on my 2012 350. Will post the outcome.

 

you can pull the relay and install the Raptor one so the Lock mode works at all speeds

 

I'd like to take your word on that.
Can you provide your source? Is it as simple as "plug & play"?

 

Maybe this is a dumb question, but why would you want to override this? When in 4low with the rear end locked, you can spin that thing up as fast as you want (traction control, e-locker limiter, etc all disengaged).

Are you using the diff lock in 2wd and want to go faster than 25mph (or whatever the limit is)? For reference sake, from the manual:

ELECTRONIC LOCKING DIFFERENTIAL (ELD) (IF EQUIPPED)
The electronic locking differential (ELD) is a device housed in the rear
axle which allows both rear wheels to turn at the same speed. It provides
added traction on slippery and/or off road surfaces, particularly when
one wheel is on a poor traction surface. The ELD may be locked or
unlocked by the vehicle operator and can be engaged or disengaged on
the fly. When the axle is unlocked it will function like a standard rear
axle. When the axle is locked it will not allow the rear wheels to rotate
at different speeds when turning. It is not recommended for use on good
traction surfaces such as dry pavement. Doing so may result in abnormal
driving behavior and noise while cornering and excessive tire wear.
The ELD is affected by the following conditions of your vehicle:
• On 2WD vehicles and 4WD vehicles in 2H (4X2) or 4H (4X4 High),
the ELD will not engage if the vehicle speed is above 25 mph
(40 km/h).
• On 2WD vehicles and 4WD vehicles in 2H (4X2) or 4H (4X4 High),
the ELD will automatically disengage at speeds above 25 mph
(40 km/h) and will automatically reengage at speeds below 19 mph
(30 km/h).
• On 4WD vehicles in 4L (4X4 Low), the ELD can be engaged at any
speed and will not automatically disengage.

 

My answer may be as 'dumb' as your question, Matt. But here goes....
Personally, I would like the diff to be locked when I activate it and unlocked when I deactivate it.
I don't want some software deciding when it is on or off.
The aftermarket lockers operate this way, and folks that have them don't mind them being locked until they decide to unlock.

 

In that case, Ford's done me a favor. I'd grenade the factory unit in no time.

 

Where is that relay located and how much would that relay cost?

 

Sounds like its open or a spool. Not very good IMO. I would tend to keep it limited to low speed. Its unlike a locker in that a locker disengages around corners and when not accelerating. The spool can get you into trouble if not careful. I'm talking about a detroit or lockright type..



Dick

 

spe sells a kit for $50 that you wire in. Really easy and it will keep it locked until you turn it off