Ignition switch won't turn off! - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
DL650 and DL650A - 2004 to 2011 DL650 from 2004-2006 (K4-K6) and DL650 or DL650A from 2007-2011 (K7-L1)

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post #1 of 11 Old 08-15-2019, 04:23 PM Thread Starter
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Ignition switch won't turn off!

Hello! My 2005 650 did something really weird yesterday. I rode it to work, rode it mid day, all fine. When I left in the evening I turned the key on, then back off because I forgot something.....and the headlights and dash didn't turn off! Cycled the ignition switch several times, same result, started engine, same result - turning the ignition switch off didn't kill the engine, although the kill switch did, but the lights still stayed on. The key action felt normal. OK, I figured I'd ride it home and then disconnect the battery. But when I got home the ignition switch worked normally! And today, so far so good. So somehow, my ignition switch turned on and was not responsive to turning the key back off, but then riding time and maybe vibration fixed it, at least for now.

This is not the first time I've had weird behavior from the ignition switch, see the thread below if you're interested. After that I followed the instructions also linked below to take the switch apart. I didn't really find any anomalies, everything looked pretty normal in there. No cracked solder joints, loose conductive objects rolling around inside the switch, that kind of thing. I cleaned everything, greased it and put it back together. This is the first time it's acted up since.

So what the heck? Maybe the tab that clocks the key portion to the switch electrical portion is wearing out and coming undone occasionally? But again, it didn't look worn when I worked on it. Maybe it's time to bite the bullet and buy a new ignition switch. Anybody seen this behavior? Thanks!


My previous thread from 2016:
https://www.stromtrooper.com/dl650-d...t-key-etc.html

Reference thread for fixing ignition switch:
https://www.vstrom.info/Smf/index.ph...c,10907.0.html
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post #2 of 11 Old 08-15-2019, 09:03 PM
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The contacts in the bottom of the switch are making contact when they shouldn't. Could moisture be involved?
Perhaps its worth a second disassembling a second time. As it is occasional, and the kill switch works is it a big problem?

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post #3 of 11 Old 08-15-2019, 09:12 PM Thread Starter
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Hi Brockie,

Yes, kill switch is fully functional for the engine, it leaves the lights on of course. And I packed my 10mm but driver, just in case I have to disconnect the battery 😉

Moisture is not involved. I'm in AZ, it's been a hot, dry week. It's only happened once so far since I reworked the ignition switch. In my previous weirdness 3 years ago, moisture did make it worse.

Sumthin is certainly bridging the contacts, whether in the switch or in the wiring somewhere, like if two wires have rubbed through. That seems very unlikely though.
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post #4 of 11 Old 08-15-2019, 09:33 PM
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If you do take it apart again I would carefully look at what might bridge the contacts. Bared wires would seem unlikely, but grasp and flex the loom to the switch with the ignition off to check.

Is this link any help? https://www.vstrom.info/Smf/index.ph...c,10907.0.html
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post #5 of 11 Old 08-19-2019, 06:54 PM Thread Starter
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Yeah, that's the link I posted in the original post. I followed that procedure a couple years ago when I worked on this before, didn't find anything foreign in the switch. I was really expecting to find some loose metal in there.
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post #6 of 11 Old 08-19-2019, 08:39 PM
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This problem of the engine continuing to run is also happening to me. not consistently.

when I turn off the ignition, the engine would continue to run a second or two. but not all the time.

This only occurred after I installed the H4 Relay kit so scratching my head on this. I never use the kill switch when turning engine off.

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post #7 of 11 Old 08-19-2019, 09:25 PM Thread Starter
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Huh, the PO of my bike installed a relay kit as well. How could that cause this though? Doesn't make sense.
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post #8 of 11 Old 08-19-2019, 10:13 PM
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That's a common denominator that should not be ignored. Depending on how often the fault occurs, could you not experiment by disconnecting the relay kit for a while?
Are any of your accessories at all connected to the OEM wiring? Even an earth?

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post #9 of 11 Old 08-20-2019, 02:24 AM
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Quote:
Originally Posted by bmwguy View Post
This problem of the engine continuing to run is also happening to me. not consistently.

when I turn off the ignition, the engine would continue to run a second or two. but not all the time.
This has been reported by others on hot days.

When the radiator cooling fan is running it can produce enough power to back feed into the ignition system to keep the motor running after the key has been shut off.

If the fan is not running when the key is turned off the bike will shutdown as normal.
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post #10 of 11 Old 08-20-2019, 10:05 AM Thread Starter
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Huh, the plot thickens. That's weird. This last time for me I had not been riding all day, but it was hot, sitting under a cover in the Tucson sun. But the fan was not running.
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