Thread: D4 wouldn’t recognise the trailer locking the electric brakes

Originally Posted by garrycol

Just pull the fuse in the rear of the car (towing wiring harness) for the relevant tail light (noting both trailer tail lights will work off the cars other tail light circuit) - this circuit is the one that is feeding into the blue brake circuit of the trailer. On the 'cold' side of the fuse you have just pulled plug in the wire from the brake controller that works the electric trailer brakes - all should be OK brake wise. I am not up on D4s for trailer recognition so will leave that to others.

I have a converter to change the round socket to a flat pin socket as it seems that this is what most trailers have these days.

I already have the 7 pin flat plug, no point in setting the round plug up now, although I wish LR had set it up using the large round plug that is already there, I would have just changed the the plug on the trailer.

LRA will always baffle me with some of the dumb things they do, why can't these vehicles be set up with the round plug wired to Australian wiring from the factory if the car is ordered with the factory towbar.

Why would you wire it up when it gets here and put another plug in there

Baz.

Originally Posted by Redback

If the black round plug has been setup for Australia, then a normal black round plup to flat pin is fine.

But like anything LR does, more than likely what they have done is either nothing OR they have had a 7 pin flat plug retro fitted, which is what they did to our D4.

So what needs to be done is, get your black round plug re-wired to suit Australian trailer wiring, apparently it's not that hard, and is only a matter of changing 2 or 3 wires around in the plug, or so I've been told.

Baz.

I suppose as I'm still awaiting delivery (as I want a 2013 build), I'll ask the dealer to change it over to the correct pins.

Originally Posted by phl

I suppose as I'm still awaiting delivery (as I want a 2013 build), I'll ask the dealer to change it over to the correct pins.

If you're not planning on fitting a Electric Brake Controller then it's only a matter of isolating one wire, 1 minute job.

If you're going down the Electric Brake Controller path search the threads on AULRO as many have been down that path with mixed results depending on who they used. General concensus is have the installer run a new cable from teh controller all the way to as close to the plug as possible as teh "second" tail light curcuit cable is quite thin.

Originally Posted by phl

I suppose as I'm still awaiting delivery (as I want a 2013 build), I'll ask the dealer to change it over to the correct pins.

Get the dealer to set it up, that way if things go bad, it's covered by warranty.

Baz

Just a quick update. Had the D4 in for its 1st (12mth) Service today and according to the Service guys it's a programming fix on the D4's. No wiring modifications required!!