Join Date: Mar 2018
Location: Marina del Rey, California
Gear indicator potentiometer trouble
There's already a thread on transmission sticking in N or '--' but this one is about the gear indicator on the dashboard no longer working properly or at all. In that other thread there are several owners who report that they had to have their potentiometers replaced after the gear indicator on the dashboard would no longer report the correct, or any, gear. The potentiometer bolts onto the left side of the engine and is easy to replace, and costs $76 plus sales tax at your dealer.
Here's what happened to me yesterday. After having made a rocky start (didn't realize I had the bike in 1st when I went to start it without pulling the clutch in. It started, lurched forward with me on it, for about a half a foot, then stalled). Shortly after that minor incident the gear indicator started misreporting. Nothing over 3rd, sometimes just showing '--'. I turned the bike off and back on, hoping the re-set would fix things, but no. So then this morning I decided to pull the potentiometer and see what's what. First though, I decided just to try it again, and move the box through its gears with the engine off. The gear indicator worked fine again! I removed the potentiometer nonetheless, and manually moved its pin, that slots into a hole inside the gearbox, and it did work just fine on the dash. Put it all back together and went for a test ride. Well that turned into a 60 mile up and down the Pacific Coast Highway ride, from Santa Monica to north of Malibu, between 8 and 10 AM. Tons of bikes on the road, gorgeous weather. The gear indicator never missed a beat. So it seems that (1) the malfunction was caused by the jerky starting, throwing the software out of calibration, and (2) parking the bike overnight re-set things. Just turning on and off briefly did not. Finally (3), if it breaks convincingly I shall replace it myself, rather than going through the hassle of bringing the bike to the dealer (about a half hour drive each way in no-fun LA traffic), renting a replacement for the day, hoping they will fix it under warranty, have the part quickly, etc. Just not worth all the trouble for $76.
2018 G 310 R, 2016 C 650 Sport and 1976 (!) Yamaha XS650