Forums 🚥 PiT STOP 🔧 Hyosung Technical Help GV125s safety switches
- This topic has 4 replies, 2 voices, and was last updated 4 hours ago by
Vab.
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Oct 24, 2025 at 3:06 PM #21067Bike Model = : Gv125s aquila 2019 EFi
Does anyone know how many safety switches there are on the gv125? I’m aware of the sidestand. I’m currently not able to start the bike. Have plenty of power. Fuel pump primes but nothing happens when pressing the starter
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Oct 24, 2025 at 7:28 PM #21072
Clutch Switch , Neutral Sensor , RO Sensor (Roll Over Sensor) , Magneto Pulse Trigger (part of the stator unit)
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Oct 24, 2025 at 8:18 PM #21077
Clutch Switch , Neutral Sensor , RO Sensor (Roll Over Sensor) , Magneto Pulse Trigger (part of the stator unit)
Thanks, Marcel. Where would you start if the sidestand switch has been cleaned and still isn’t working? I’ve had this problem before and it was as easy as blasting the sidestand switch with brake cleaner.
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Oct 24, 2025 at 8:44 PM #21078
Stand Switch would be #1 and then replacing the Clutch Switch (would not bypass it) as if the ECU thinks you’re holding the clutch all the time , it might get funny as I can’t fully confirm how much Hyosung has programmed their ECU to depend on user actions (rather than bypasses)
If you said GV125 carb model = it would not matter as Hyosung didn’t always include stand switches or clutch switches , they didn’t matter too much.Also in my experience one of my bikes was in NEUTRAL (according to the dash) and i pushed start , it rolled and fell down , so false neutrals are rare and can happen , hence “hold clutch in” before starting is enforced on these 2018+ new models of bikes coming out now.
Neutral Switch , complicated as it is also a gear counter, so i would not mess with it.  ECU may read what gear you’re in to optimize ignition behavior etc
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Oct 24, 2025 at 10:14 PM #21080
Stand Switch would be #1 and then replacing the Clutch Switch (would not bypass it) as if the ECU thinks you’re holding the clutch all the time , it might get funny as I can’t fully confirm how much Hyosung has programmed their ECU to depend on user actions (rather than bypasses) If you said GV125 carb model = it would not matter as Hyosung didn’t always include stand switches or clutch switches , they didn’t matter too much. Also in my experience one of my bikes was in NEUTRAL (according to the dash) and i pushed start , it rolled and fell down , so false neutrals are rare and can happen , hence “hold clutch in” before starting is enforced on these 2018+ new models of bikes coming out now. Neutral Switch , complicated as it is also a gear counter, so i would not mess with it. ECU may read what gear you’re in to optimize ignition behavior etc
Appreciate it. Had a look for a replacement switch but couldn’t find anything. Sourcing parts for this bike is hard
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