Cayenne towing with a trailer with LED lights on it

[griff7]

I have a 65 plate facelift Cayenne and have ordered a trailer and i would prefer the option of LED lights on it but have been told that some vehicles don't like them as the low output sets off the bulb out warning lights.

Anyone got any experience of this or had any issues ?

Andy

[pete.g]

The issue is the low load of an LED bulb compared to a traditional incandescent, which fools CANBUS systems into reporting a bulb failure.

It also causes problems with the audible turn signals required when the trailer is connected, as the current drawn is not enough to trigger the relay for the 'bleeper'.

The cure is to fit a ballast resistor so that the current drawn is the same as a normal bulb.

You can get LED bulbs which fool CANBUS, but if you're using sealed units (e.g. permanently fixed on a boat trailer), then the ballasts are the way around this.

If you go to any decent tow bar fitter they will know what you are after, or it's a simple DIY to splice the resistors into the trailer wiring harness.

HTH

[nutsytvr]

There has been a lot about this on the caravan club forums. I know that most JLR 4 x 4's had this problem, as did many others. My X5 was ok however.

I bought a new caravan last year. The early models had LED lights, and they caused so many problems with a whole range of towcars, that by the time I took delivery of my van, Bailey had gone back to fitting ordinary bulbs.

Don't know about Cayennes, but I wouldn't risk LEDS on a trailer if you have the choice

[griff7]

Thanks for the replies will check with the trailer company again as Porsche did not know the answer.

[nutsytvr]

Griff
The trailer company probably won't know. Take your Porsche to them and ask them to check it with a "light board" fitted with LED's. That's the only sure way.

[pete.g]

[url=url]http://www.rydertowing.co.uk/products/trailer-adapters-led/adapters-led
[/url]

Ask the trailer company to fit this to the trailer and the job is done.

I've never used one and have no connections with this company. I have put LED lights onto boat trailers and just used a ballast where required to get the car to recognise a load on the indicator circuit, but this will simulate a load on all circuits.

ETA - can't get this to go in as a hyperlink for some reason.