Quote:
Originally Posted by andrewc89
It's interesting because if you've retrofitted LCI tail lights on a PreLCI this doesn't seem to be an issue
|
The issue is BMW leaving the "hot" bulb-check on even for LED tail lights..
LED runs on a lower polarity than incandescent, for which the "bulb checks" was originally designed for, so the system is going to assume an error when LEDs are operational, since it's drawing a lower amperage.
I have a sneaking suspicion because BMW left on the hot
bulb check (for God knows why
: ) for the LED turn signal and the lack of ground is causing the turn signal to assume an error.
Folks that did the LCI taillight swap is going to go by the DIY instructions and code out the
hot and
cold bulb checks, hence, no rapid flashing turn signal error.
BTW, I to have a pre-LCI with LED taillights and never received a turn signal error but I did double up on two separate ground polarity wires, just for good measure.
https://www.newtis.info/tisv2/a/en/f...outer/4LACTpNd