Member Since: 25 Dec 2020
Location: Europe
Posts: 326
Is my 4x4 working correctly?
I had to go on very muddy and wet field today, so engaged low range +put TR into grass/snow/gravel. Any idea why my both diffs did not lock?
Click image to enlarge
30th Dec 2020 5:27 pm
geoffsnook
Member Since: 13 Jun 2014
Location: south wales
Posts: 3169
Only rock crawl will lock center diff others lock when its needed they will just not lock them selvesDiscovery 3 se gone
Range rover sport supercharged here:)
30th Dec 2020 6:01 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72931
Rear one won’t lock unless you have an e-diff, which was an option box ticked by very, very few.
30th Dec 2020 6:03 pm
Yargo
Member Since: 25 Dec 2020
Location: Europe
Posts: 326
How would I know if I have e-diff? I would like to check.
30th Dec 2020 6:13 pm
Yargo
Member Since: 25 Dec 2020
Location: Europe
Posts: 326
geoffsnook wrote:
Only rock crawl will lock center diff others lock when its needed they will just not lock them selves
According to this manual, it should have locked
Click image to enlarge
30th Dec 2020 6:13 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72931
ISTR low box and rock crawl combo will lock up the centre diff when stationary, but that is a very distant memory.
30th Dec 2020 6:25 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72931
Yargo wrote:
How would I know if I have e-diff? I would like to check.
It involves crawling around under the car looking for a servo thingie but that’s also a vague and distant memory.
30th Dec 2020 6:29 pm
L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2080
According to that if Low Range selected then diff's are lockedUncle Ray's spare wheel protector
Limo Tint
Blackvue front & rear dashcam
Cruise control switch pack
Bodsy's remote for FBH
30th Dec 2020 7:08 pm
geoffsnook
Member Since: 13 Jun 2014
Location: south wales
Posts: 3169
E diff has wires going to it and DSl you are correct needs rock crawl and low box to engage rear diff but will only briefly lock one it detects it needs too Discovery 3 se gone
Range rover sport supercharged here:)
30th Dec 2020 7:34 pm
Yargo
Member Since: 25 Dec 2020
Location: Europe
Posts: 326
ianm27 wrote:
According to that if Low Range selected then diff's are locked
I need to find out why they are not locked
30th Dec 2020 7:57 pm
geoffsnook
Member Since: 13 Jun 2014
Location: south wales
Posts: 3169
Why they wont until they need too which the ecu determines nothing elseDiscovery 3 se gone
Range rover sport supercharged here:)
30th Dec 2020 8:03 pm
Yargo
Member Since: 25 Dec 2020
Location: Europe
Posts: 326
TR cheat sheet clearly states in low range and gravel mode mid diff is locked.
30th Dec 2020 8:12 pm
geoffsnook
Member Since: 13 Jun 2014
Location: south wales
Posts: 3169
I think you will find if you engage both then drive and get the rear axle to start slipping it will lock bur not when its stationary why don't you give it a try pretty sure it does not lock up until it detects slip Discovery 3 se gone
Range rover sport supercharged here:)
30th Dec 2020 8:19 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72931
And not if it wasn’t fitted, which was prob 99% of those built.
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