zachd Posted March 30, 2016 Share Posted March 30, 2016 Hey All, So as of recent, I've had an intermittent problem with the brake light being actuated as soon as I key the ignition to on. Sometimes the brake will stay on for miles on end. The only reason I began noticing this is because I have a MotoDynamic tail installed, which flashes 3 times when activated. So it stuck out to me as soon as I key the ignition. Today, I decided to take a look a little deeper into the matter. I hooked up my oem tail, and it had the same results. So I knew I could immediately rule that out of the equation. Next step, I started to check out the rear brake assembly. I pressed it down several times, and was able to replicate the issue. I then started messing with the rubber boot above the foot assembly, and upon wiggling it a few times, the brake actuation turned off. Pressed down again a few times, replicated, brake light on. Wiggled, brake light off. Needless to say, I think I isolated the issue down to whatever sensor is inside the rubber boot. I am having new tires installed on the bike at the dealership this week, and will have them look at this issue and attempt to have them warranty it out. I will report back on their findings. The picture below depicts the area in question. The rubber boot/sensor I believe is faulty is pointed out in the picture below. Anyone have any input on this? Link to comment Share on other sites More sharing options...
Premium Member wessie Posted March 30, 2016 Premium Member Share Posted March 30, 2016 is there any adjustment in the switch? Many of them have an adjuster so you can have a little free play so that minor movements of the brake lever do not trigger the light switch. This signature is left blank as the poster writes enough pretentious bollocks as it is. Link to comment Share on other sites More sharing options...
steve Posted March 30, 2016 Share Posted March 30, 2016 I have had issues with the brake light staying on longer far than it should. I put it down to me being the problem and when the bike was in for a service I asked them to adjust the brake lever for me - thinking I might have been riding the lever. In some cases it was on when I knew I had not used the brake at all. They came back and told me the switch was sticking. Interesting you seem to have a similar problem, I'll need to make sure mine is still OK, otherwise I'll have to get the dealer to look closer into why it is not operating properly. Link to comment Share on other sites More sharing options...
zine Posted March 30, 2016 Share Posted March 30, 2016 To confirm, it is the Switch Sticking. Had the same problem, but a liberal spray with lubricant soon sorts it out! Link to comment Share on other sites More sharing options...
gabefzr6 Posted March 30, 2016 Share Posted March 30, 2016 Mine got sticky too. I adjusted and lubed it and it has worked well since. 2008 Street Triple G 2015 FJ-09 Link to comment Share on other sites More sharing options...
emitrdetsaw Posted March 30, 2016 Share Posted March 30, 2016 My wife's bikes switch stuck, I lubricated the plunger and rolled the plastic nut in 1/2 turn (not easy to do with such limited clearance) and that solved the issue. Link to comment Share on other sites More sharing options...
Premium Member wessie Posted March 30, 2016 Premium Member Share Posted March 30, 2016 just washed my bike - quick, someone get @johan a brandy - I could see the brake light switch free play is simple to adjust using an open ended spanner, 10mm probably- release the lock nut, twist the bolt until the switch is only actuated when the lever is given a good prod. Then tighten the lock nut. This signature is left blank as the poster writes enough pretentious bollocks as it is. Link to comment Share on other sites More sharing options...
steve Posted March 30, 2016 Share Posted March 30, 2016 just washed my bike What on earth possessed you to do that 8D Bad weather ahead P-) Link to comment Share on other sites More sharing options...
Premium Member wessie Posted March 30, 2016 Premium Member Share Posted March 30, 2016 I needed an excuse to stand on the drive to admire some scenery working on a neighbour's porch. Couldn't see him from the lounge window... This signature is left blank as the poster writes enough pretentious bollocks as it is. Link to comment Share on other sites More sharing options...
Premium Member johan Posted March 30, 2016 Premium Member Share Posted March 30, 2016 Why did you not ask him to wash the bike? I first reported about the brake light switch here: and Wessie responded. Link to comment Share on other sites More sharing options...
zachd Posted March 31, 2016 Author Share Posted March 31, 2016 ***UPDATE*** Swung by the dealership today. The service manager came out and said there is a small "plunger" inside the dust boot, and it was getting stuck. A few quick hits of silicone spray, and I was back in business. No adjustment or anything else needed, just a few sprays of silicone and wabamm! I presume riding on dirt a few weeks ago may have been the culprit here, trapping dirt and grime inside the boot. Sidenote: Might be beneficial to anyone reading this to just go outside real quick and do this on their own and prevent it from happening in the first place. Link to comment Share on other sites More sharing options...
Premium Member wessie Posted March 31, 2016 Premium Member Share Posted March 31, 2016 ***UPDATE*** Swung by the dealership today. The service manager came out and said there is a small "plunger" inside the dust boot, and it was getting stuck. A few quick hits of silicone spray, and I was back in business. No adjustment or anything else needed, just a few sprays of silicone and wabamm! I presume riding on dirt a few weeks ago may have been the culprit here, trapping dirt and grime inside the boot. Sidenote: Might be beneficial to anyone reading this to just go outside real quick and do this on their own and prevent it from happening in the first place. and another reason not to use a pressure washer, which may force dirt inside the boot This signature is left blank as the poster writes enough pretentious bollocks as it is. Link to comment Share on other sites More sharing options...
stevelenti Posted April 15, 2016 Share Posted April 15, 2016 ***UPDATE*** Swung by the dealership today. The service manager came out and said there is a small "plunger" inside the dust boot, and it was getting stuck. A few quick hits of silicone spray, and I was back in business. No adjustment or anything else needed, just a few sprays of silicone and wabamm! I presume riding on dirt a few weeks ago may have been the culprit here, trapping dirt and grime inside the boot. Sidenote: Might be beneficial to anyone reading this to just go outside real quick and do this on their own and prevent it from happening in the first place. Thanks for this I had this exact same problem and sprayed the plunger and all good. It is a pretty flimsy little switch. Here is the Yamaha PN just for reference 1RC-82530-00 -Steve Link to comment Share on other sites More sharing options...
g8r Posted April 22, 2016 Share Posted April 22, 2016 I had the same problem about the brake sight staying on. A quick look by the mechanic when the bike was in for servicing resulted in his finding a small tab on the brake spring that was hanging up keeping the light on. He bent the tab and the problem disappeared. Link to comment Share on other sites More sharing options...
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