Troubleshooting Turn Signal Malfunction With Demco Stay-In-Play Duo Installed In 2016 Jeep Cherokee

Updated 11/16/2021 | Published 11/14/2021

Question:

When towing with Stay-in-play off, tail lights on toad function normally. With Stay-in-play on blinkers alternate left and right, not matter which on is turned on. What did I miss?

asked by: Robert H

Expert Reply:

I spoke with a Demco technician and he suggested the following steps to troubleshoot your lighting issues with the Demco SBS Stay-IN-Play DUO Supplemental Braking System - Proportional # SM99251.

You'll want to restart the installation process at Step 12 (found on page 17 of the attached installation manual) as this problem is most likely a sensitivity issue.

First check the brake signal wiring from the coach to your 2016 Jeep Cherokee. Next bring the sensitivity knob to the floor and then test drive the coach while pulling the Jeep. Slowly raise the knob until the system shuts off and then raise it 1/8" higher. Retest the system by driving around, I recommend finding a large empty parking lot so you can have someone else watch the lights while you test drive. If this does not solve your issue then you may have a malfunctioning unit and will need to contact Demco directly for more troubleshooting/replacement.

expert reply by: Kevin C