Just fitted a tow bar and electrics to my RR and all is good when connected to a trailer board with filament bulbs. But when connected to a LED trailer board the RR does not recognise that there is a trailer attached and so the parking sensors remain active and the cars fog light's still light up with the trailer's ones.

I know that this is down to the lower draw of LED versus filament bulbs, but there must be a way to get this to work without the need to fit ballast resistors into the board. After all any new tin tent will have LED bulbs for sure.

Is there a fix anyone can point me to?

Many thanks in advance.  2010 Range Rover TDV8 Baltic Blue Autobiography (2011 MY) - SOLD
1960 Land Rover SII SWB SW
2020 BMW R1250 RT LE
2021 Triton ST-125 (Monkey Bike)

heres one thread re this,

https://www.fullfatrr.com/forum/topic38077...ler+lights


there are many more relating to this problem, do a search  ... - .- -.




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That is very odd. Our 2006 MY, which has a genuine LR tow-bar wiring kit fitted, works fine with a trailer with LED lights.

If it helps? The car knows the trailer is connected only through the brake light circuit so, you only need a resistor or filament bulb on that circuit sir

Cam-Tech-Craig, Thanks for that info, as a last resort that offers a simple bodge solution.

Thanks also to Stan, I tried searching first, but like you did not find a thread with a solution to the issue, but then again it may be there but beyond my searching capabilities!

Thanks both. 2010 Range Rover TDV8 Baltic Blue Autobiography (2011 MY) - SOLD
1960 Land Rover SII SWB SW
2020 BMW R1250 RT LE
2021 Triton ST-125 (Monkey Bike)

It seems that LED's/bulbs/RR's is a bit of a "black art" - what works on one vehicle/trailer may not work on another.

I have LED''s on my box trailer - the basic rear clusters are doubled up so the brake light LED's draw enough to keep the car brake light monitoring happy.
Although the sidelighs are supplemented with side marker lights I sometimes get a "check trailer light" warning, sometimes not.
However, until I fitted load resistors to the indicators they were very erratic. 2003 Range Rover Vogue TD6