Led trailer on a D4 my13

[the_amors]

Hi all I've just spotted these trailer modules for towing a trailer with led lighting. Do I need one of these? If so the fixed one or the portable one? Not sure what the go is.

[Lotz-A-Landies]

The issue is that the D4 is constantly sending signals around the harness to check status of the car and these cause the LED trailer lamps to flash constantly. (Just watch out for other people's trailers with LED and you'll soon see what happens.)

Also the D4 needs to read the resistance across the globes so that it knows that the trailer is connected, it then disables the reverse sensors and enables trailer stability control.

[the_amors]

The issue is that the D4 is constantly sending signals around the harness to check status of the car and these cause the LED trailer lamps to flash constantly. (Just watch out for other people's trailers with LED and you'll soon see what happens.)

Also the D4 needs to read the resistance across the globes so that it knows that the trailer is connected, it then disables the reverse sensors and enables trailer stability control.

Oh ok this is all new to me I towed a trailer in the weekend with LEDs but did not notice the lights flashing but did notice that the rear sensors where still operating didn't think much of it at the time. What happens when the trailer stability control kicks in?

[Grappler]

Plenty of discussion on this topic

http://www.aulro.com/afvb/d3-d4-rrs/85396-led-trailer-lights.html

[discotwinturbo]

A recent software upgrade was supposed to fix this.

I can now run led brake lights, led park lights ok but when either left or right blinkers are engaged, both blinkers blink like hazard lights being on....trailer light does not come on either.

Previous to the software upgrade, all lights would flicker....they almost have it right.

I still use the pulse box to make it work properly.

Brett.....

[Lotz-A-Landies]

Oh ok this is all new to me I towed a trailer in the weekend with LEDs but did not notice the lights flashing but did notice that the rear sensors where still operating didn't think much of it at the time. What happens when the trailer stability control kicks in?Same as with normal stability control, apart from the D4s computer making calculations based upon sensor readings with the known factor of the trailer on the rear.

You have to be driving behind the car/trailer combination to see the LED lamps all flashing independantly

[Ferret]

I thought you merely needed a resistor wired across the LED lights to make all functions work.

Also, I though stability control was completely independent of the trailer. That is, even if a trailer is attached and the computer does not know about it, it still attempts to rights any wriggle irrespective of the trailer attached to it because it can sense the vehicle being pushed about by G forces which don't align with speed, wheel rotation and direction of travel.

I'm interested in the topic because I am waiting on delivery of a trailer with LED lights myself. I went to talk with the trailer manufacturer about it. The whole issue appeared to be a complete mystery to him. Doesn't fill me with a sense of confidence so I'm prepared to just sort it myself when I get the thing.

[Lotz-A-Landies]

I have one of the plug in types of resistor units because not all my trailers have LED lamps (the ex-military Haulmark the only LED one) the only really important factor is that without the resistor unit the reverse sensors sound when you try to reverse.

Surely that is enough reson to get one, also I'm not modifying the wiring by having a plug in unit.

I bought mine off ebay from a bloke on the central coast for half the price of the one from Moss vale.

[rifi1]

If you connect your trailer plug without car running it will disable the reverse sensors . If car is running when plug is connected they dont disable, at least thats how it works on mine. Now i just have to work out how to get trailer stability assist light to work. Any clues?

[Ferret]

I bought mine off ebay from a bloke on the central coast for half the price ...

Got link or a name to search for?

[baldivistribe]

opening and closing the car doors causes the trailer LED lights to flash. Gotta love land rover electrics.
Cheers
Steve

[Lotz-A-Landies]

opening and closing the car doors causes the trailer LED lights to flash. Gotta love land rover electrics.
Cheers
SteveIt's not just Land Rover it's any modern car that has constant monitoring of the electrical system, particularly ones with fibreoptic systems.

[Lotz-A-Landies]

Got link or a name to search for?
The ones from Moss Vale were about $450.

This guy's from newcastle eBay My World - pawky66 (http://myworld.ebay.com.au/pawky66/?_trksid=p4340.l2559) Has a number on sale at various prices but the D4 RRs ones seem cheapest at $199. (Is the same as I bought in May last year for my D4)

http://www.ebay.com.au/itm/LED-trailer-module-Land-Rover-Discovery-4-Range-Rover-Sport-Landrover-LR4-Towing-/190807830004?pt=Caravan_Parts_Accessories&hash=item2c6d086df4

[djambalawa]

I am looking at getting LED spotties/bar for my D4... will this be an issue for them?

[Lotz-A-Landies]

I am looking at getting LED spotties/bar for my D4... will this be an issue for them?It shouldn't be because they will be on independant switched power.

Make sure you fit in pairs, not a single light bar, the Qld Transport has already put out a notification that single light bars do not comply with ADR, the other states are sure to follow.

[sniegy]

If you connect your trailer plug without car running it will disable the reverse sensors . If car is running when plug is connected they dont disable, at least thats how it works on mine. Now i just have to work out how to get trailer stability assist light to work. Any clues?

There is NO light!

[discotwinturbo]

It shouldn't be because they will be on independant switched power.

Make sure you fit in pairs, not a single light bar, the Qld Transport has already put out a notification that single light bars do not comply with ADR, the other states are sure to follow.

Gosh.

My led light bar has 40 LEDs.....that's 20 pairs of 2.

Be interested to see when this is tested.

Brett.....

[rifi1]

There is NO light!

Says in my handbook there is light that comes on in the dash

[gghaggis]

Says in my handbook there is light that comes on in the dash

There is a light that comes on indicating that a trailer is attached. Not the same thing.

This has all been covered before - as suggested, do a search!!

EG

http://www.aulro.com/afvb/d3-d4-rrs/85396-led-trailer-lights-post1810947.html?highlight=LED+lights#post1810947

Cheers,

Gordon

[Lotz-A-Landies]

Gosh.

My led light bar has 40 LEDs.....that's 20 pairs of 2.

Be interested to see when this is tested.

Brett.....Unfortunately, ADR13/00 only allows two pair. So, on your argument about the bar being pairs of LED, you will have to block out 18 pair! :o

Otherwise, I'm just giving people the heads up.

QT have made the following announcements,

The Department of Transport and Main Roads has recently dealt with a number of issues relating to the fitment of LED light bar to the front bumper bar and bull bar on some vehicles. Transport and Main Roads is providing the following advice to assist vehicle owners to comply with regulatory requirements. ...
... In addition to the main-beam (driving) and the low-beam (passing) headlamps, additional driving lamps may be installed as long as they comply with the following requirements: ADR13/00 requires that driving lamps, if fitted, must be fitted in one or two pairs.The result will be one of three scenarios: Nothing will happen.
Police and mermaids will start issuing defect notices and fines.
The ADR will change to allow LED light bars.

The QT VSI is here: http://pan.search.qld.gov.au/search/click.cgi?url=http://www.tmr.qld.gov.au/~/media/Safety/Vehicle%20standards%20and%20modifications/Vehicle%20standards/Vehicle%20standards%20instructions/Vsi_hv250_driving_lamps.pdf&rank=1&collection=qld-gov

[rifi1]

There is a light that comes on indicating that a trailer is attached. Not the same thing.

Cheers,

Gordon

Yes Gordon thats the one i meant. How/when does this light come on. As i said my rear sensors turn off but i have never seen this light, so is the vehicle detecting a trailer connected or not?

Cheers

[gghaggis]

Yes Gordon thats the one i meant. How/when does this light come on. As i said my rear sensors turn off but i have never seen this light, so is the vehicle detecting a trailer connected or not?

Cheers

Read the link in my last post for details. If your sensors switch off, the light should come on, but it seems to vary from year model to year model, so test it with a bulb as per the post.

Cheers,

Gordon

[IvanR]

opening and closing the car doors causes the trailer LED lights to flash. Gotta love land rover electrics.
Cheers
Steve

Is this common on all D4's or is it dependant on how the trailer plug has been wired. I have 2 friends with D4's (12 and 13 ym) who have this same thing happening and are wondering if its normal

Ivan

[rifi1]

Read the link in my last post for details. If your sensors switch off, the light should come on, but it seems to vary from year model to year model, so test it with a bulb as per the post.

Cheers,

Gordon

Ok have wired up a bulb on the van and can confirm that the the trailer light flashes with the indicator on the side that the light is installed.Do i need to connect one on the other side as well or is it ok with just one?

cheers

[gghaggis]

One is fine.

Cheers,

Gordon

[rifi1]

Thanks for your help Gordon