XC60 towbar

[mpainesyd]

Found this obscure reference to a problem with LED trailer lights:
http://www-odi.nhtsa.dot.gov/cars/pr...0&type=VEHICLE

Service Bulletin Number:TJ-21297-2
NHTSA Item Number:10037819
"VOLVO: WHEN A TRAILER IS ATTACHED THAT HAS LED LIGHTS THERE MAY BE A LIGHTING PROBLEM."
I cannot find an online copy of the service bulletin or any further information.

[wimorrison]

DO NOT Click the links in the post above from Kingarajpoot - it is harvesting IP Addresses - probably for malware infection

this has been reported to the Mods

[Vecais]

Originally Posted by mpainesyd

I have LED trailer lights and some do flash very faintly when not activated. Of more concern is that I have started getting a warning message that the trailer stop light is not working. My guess is that the LED stop light on the trailer does not draw enough current to be detected by the diagnostics. If this is the case I suppose I could look at adding an extra (incandenscent) light, or a resistor, to the circuit.

Yes, by adding extra resistance in the circuit it would fool the canbus to think that there were normal incandescent lights. In some ways it defeats the purpose of fitting LED lights, that is to reduce the current load on the circuits.

It depends on what aspect bothers you most to warrant doing anything.