D4 Trailer Lamp Not Illuminating.

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Originally Posted by LRD414

In my opinion that's heavy enough to warrant buying or making an adapter/resistor box as described in this thread. The altered gearbox mapping is quite obvious when towing that weight. And another point, it is said that the trailer stability control system is always active even if a trailer is not recognised. But personally I'm not convinced about that and would rather the trailer recognition is switched on to ensure trailer stability is active. Not a worry for the box trailer but for 2t ?

Scott

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Hi Scott,

Thanks for your input. The points you highlighted are exactly why I asked the question.

Cheers,

Kev.

You'll love Carnarvon Gorge Kev
https://www.aulro.com/afvb/images/im...017/06/483.jpg

Quote:

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Originally Posted by LRD414

it is said that the trailer stability control system is always active even if a trailer is not recognised.

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I suspect that you haven't seen the LR trailer stability assist promotional video of the D4 towing a tandem car trailer with a Defender on it with the trailer electrical plug not connected.

Any thoughts / ideas for a solution to using the white trailer connection with DIY indicator globe or circuit LED load resister?

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Originally Posted by Graeme

I suspect that you haven't seen the LR trailer stability assist promotional video of the D4 towing a tandem car trailer with a Defender on it with the trailer electrical plug not connected.

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Hi Graeme,

I have seen that video, I would of thought the LR Trailer Stability would always been on in the back ground as well, but having towed the new van for a couple of times now since I purchased, I'm not 100% convinced, as I have had a couple quite noticeable trailer sways where there has been no electronic help from the either the D4 or the van, as am new to towing a large van, I'm taking it easy, but I can see how easy it would be to get into a nasty situation quite quickly if you didn't treat it with complete respect.


I have found the 12 volt 21 watt LED Load Resistor in my Narva book ( Part Number 90034BL ) they cost less than $10.00, so will get one and give it a try, thanks for all the advice on the subject guys, I will let you know if it does the trick.


Jack

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Originally Posted by Ozzy119

Any thoughts / ideas for a solution to using the white trailer connection with DIY indicator globe or circuit LED load resister?

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The 12S white outlet does not have indicator circuit wires, only the 12N black outlet.

Quote:

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Originally Posted by Graeme

I suspect that you haven't seen the LR trailer stability assist promotional video of the D4 towing a tandem car trailer with a Defender on it with the trailer electrical plug not connected.

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I have seen it Graeme but that's the only evidence (video's voiceover) I've found of it still being active without the trailer electrical connection.
Here's a still from the video that appears to show an electrical connection.
https://www.aulro.com/afvb/images/im...017/06/433.jpg



However, this statement comes from the Land Rover website:
"TSA is an automatic feature to assist the stability of a trailer when towing. If trailer sway is detected, engine power is gradually reduced and the brakes applied to help regain control."

So that's not 100% proof either way but I feel more comfortable with all towing functionality active, just in case.

Land Rover: Trailer Stability Assist - Land Rover Australia - YouTube

Cheers,
Scott

I was sure that the video showed a close-up of the disconnected electrical lead but it's not in that video.

Quote:

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Originally Posted by LRD414

I have seen it Graeme but that's the only evidence (video's voiceover) I've found of it still being active without the trailer electrical connection.
Here's a still from the video that appears to show an electrical connection.
https://www.aulro.com/afvb/images/im...017/06/433.jpg



However, this statement comes from the Land Rover website:
"TSA is an automatic feature to assist the stability of a trailer when towing. If trailer sway is detected, engine power is gradually reduced and the brakes applied to help regain control."

So that's not 100% proof either way but I feel more comfortable with all towing functionality active, just in case.

Land Rover: Trailer Stability Assist - Land Rover Australia - YouTube

Cheers,
Scott

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Maybe it's still active but not 'as' active like turning off the stability control in sand? It's still there but not as aggressive.

Or their marketing team got their facts wrong .... it happens .... I work in BD so I can safely say that :-)

I bought the box today .... just to be sure.

Cheers,

Kev.

Quote:

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Originally Posted by Graeme

I was sure that the video showed a close-up of the disconnected electrical lead but it's not in that video.

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Not sure Graeme but there's some good discussion in this old thread.
Trailer Stability Assist
It's still not 100% definitive but is interesting.

Scott