Fix Potential Hyper Flashing On 2017 Land Rover Discovery

Question:

I have a 2017 Land Rover Discovery 5, HSE LUX, td6 with all the towing packages. I am looking at a Forest River 21ss which has LED lights. Concerned that D5 will not seeinch the trailer to put the D5 in Trailer Towing mode. Do you have anything that will address this?

asked by: Jim B

Expert Reply:

I understand your concern that some newer vehicles have to recognize that a trailer is plugged into the connector in order for the towing functions to activate. When a trailer has LED lights the power draw is very low, but that's one advantage of LED lights. However since the power draw is so low the vehicle doesn't recognize the trailer and therefore doesn't turn on the towing features.

Another cause could be that the 2017 Land Rover Discovery recognizes the lights being on the circuit but since the draw is so low, the vehicle thinks the bulb is burning out and therefore turns on a warning to change the bulb and causes the turn signals to hyperflash.

The solutions are to either install load resistors like # DI34ZR in the turn signal wiring or on some European cars, # C35FR or # C57003 will solve this issue.

I've provided you an install diagram showing the proper installation of the load resistor to prevent hyper-flashing. Review your installation to make sure the load resistors are installed as shown in the diagram. For the best installation, the load resistors should be soldered in place and heat shrink tubing should be used to protect the connections.

expert reply by: Timothy G