Did you have any issues with Auto-Hold, On/Of Engine Option, and Smart Cruise control not working after your service?Read the recall TSB, included in the PDF above... only fuse panel cover and driver's kick panel are removed... nothing under the vehicle is touched, nothing is run back to the hitch point.
Had mine done, hooked up my hitch light with an extension 4-pin wiring to inside the car to verify how it works - trailer brake lights now come on when: in Auto-Hold; when SCC applies the brakes (to keep at set- speed, happens more often than I thought - go up a hill, drops a gear to speed up back to set-speed, crest the hill and start down, applies brake to bring back down to set-speed) and when bringing vehicle to stop behind traffic...
Assumption is the fix makes the trailer brake lights mimic the vehicle brake lights, as it should have done originally.
I’m still trying to get my trailer up and running. I promise not to hijack anyone’s post Since this is related to this topic, I thought I would just throw it out there.
I recently noticed the trailer lights are not aligned. My mechanic can’t seem to figure it out. I have a 2020 EXP no tow option/package.
I purchased the tow harness installed and have The 4 pin to seven spliced. All colors are matched. However, left turn signal on car makes right turn signal on trailer, right turn signal makes the hazard light go on. I also noticed a light bass soi dcoming out of the trailers speakers when I tested the left turn signal. I have a 2021 wolf pup 16BHS. Hazard and brake lights are ok.
Any ideas what’s up?
Thanks in advance,
So I have the recall as well. I had inquired about having the 2021 7 pin harness + hitch installed on my 2020 (instead of paying to have the 2020 4 pin + hitch). Would this be a part of this? Should I have them wire the 7 pin while they do this to save $$? Thoughts?